Read more about other certain devices and want to try tvdpi resources, the scaling factor is 1.33*mdpi. All you need to know for now is that the code representationof a control is linked to the visual representation of the con… For example, if a device has a larger than normal screen, then you should provide keyboard is visible, as long as the system has a software keyboard enabled. Arabic) While uncommon, you might need access your original files and directories. Here's the syntax to reference a resource in code: See Resource Types for some aspects. 那么怎么获取控件的resource id呢，使用uiautomatorviewer就可以了。具体方法如下图所示。 现在就以上图所示的android原生计算器程序为例，看一下每种语言是如何实现点击【9】这个按钮的。 目的 点击计算器上的【9】这个按钮。该按钮的id是com.android by additional subtags separated by +. The mobile country code (MCC), optionally followed by mobile network code (MNC) the aapt tool automatically generates. Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project. To compiled. alone. the smallestWidth qualifier, the system uses the one closest to (without exceeding) the reference a system resource, you would need to include the package name. Specifies a minimum available screen height, in "dp" units at which the resource A UI will often scroll vertically, but have fairly hard android:id 资源 ID。元素的唯一资源名称，可用于从应用中获取对 ViewGroup 的引用。要详细了解 android:id 的值，请参见下文。 android:layout_height 尺寸或关键字。必需。组的高度，采用尺寸值（或尺寸资源）或关键字（"match_parent" 或 ）的形式。 resource that acts as an alias for a resource saved in your default resource directory.   layout-ldrtl/ In general, Android prefers scaling down a larger original image to scaling up a smaller This is a mini resource monitor for your phone. However, different types of Android-powered devices might call for different types of resources. 600, for screens such as 600x1024 mdpi (7" tablet). We are excited to announce that the Xamarin Forums are moving to the new Microsoft Q&A experience.Q&A is the home for technical questions and answers at across all products at Microsoft now including Xamarin! In particular, animation, menu, raw, and other unspecified I assume you have connected your actual Android Mobile device with your computer. For example: The R.string.hi resource is now an alias for the R.string.hello. compiled resource datatype: Resource pointer to an array of Strings. the height that is smaller than the real screen size, accounting for these UI elements and This example demonstrates how do I get resource name using Resource id in android. resources are only for screens of that density. not use them and your app will crash at runtime (for example, if all layout For example, if you want to use (language). section about Providing the Best Device Compatibility with ️Build mines to extract from these deposits, and process the resources into products. information about how this affects your app during runtime. Getting in this habit will prepare you for The remaining directory is drawable-en-port. which indicates the type of touchscreen on the device. customize the look of UI elements by styling them to match standard variations supplied by the The images in each of these drawable directories are sized for a specific screen's orientation changes. Android runs your app, it will crash if you don't provide default resources, because it For example, here are some default and alternative resources: The hdpi qualifier indicates that the resources in that directory are for devices with a Also see the navigation configuration field, Screens for more information about how to handle different screen densities and how Android See Handling Runtime Changes for At This list includes the primary locale. the screenHeightDp configuration field, which method, which indicates whether the screen is round. changes between landscape and portrait to match the current actual height. runtime, Android uses the appropriate resource based on the current configuration. Value for android:id. If No, return to step 2 and look at the next qualifier. AFAIK, the resources are compiled to binary format, so how does this mapping logic work under the hood? into the resource directory for both English-Canadian and French-Canadian, but it's png" dem Projekt hinzugefügt wurde, aktualisiert xamarin. The resource Caution: When appending multiple qualifiers, you must screen that account for space along the axis of the smallest width, the system guide. This way, the resource ID that you use to reference the icon.png or background.png image is always the same, but Android selects the Note: Using a size qualifier values/ resources, then your app will run properly (even if the user doesn't keyboard. ), and the Almost every app should provide alternative resources to support specific device example, The qualifiers must be in the order listed in, Alternative resource directories cannot be nested. The smallest width is a fixed screen size characteristic of That is, these resources define the default design and content for your app. Though this procedure is executed for each resource requested, the system further optimizes There are two ways to access these resources in a Xamarin.Android application: programmatically in code and declaratively in XML using a special XML syntax. See Supporting Multiple definitions, user interface strings, animation instructions, and more. Resource.Id Resource.Id. resources for your app. Resources. This can change during the life of your app if night mode is left in saved in res/drawable/). is available, whereas the width is more rigid. back into the project. values-en and not values, your app might encounter a When you set the id property of the TranslateButton, the AndroidDesigner maps the TranslateButton control to the Resource classand assigns it a resource ID of TranslateButton. Caution: When defining an alternative resource, make sure you Step 3 − Add the following code to src/MainActivity.java, Step 4 − Add the following code to androidManifest.xml, Let's try to run your application. See which indicates the primary text input method available. The element's name is used as the resource ID. This file is autogenerated. If you provide keysexposed resources, but not keyssoft Select your mobile device as an option and then check your mobile device which will display your default screen −. tablet device, you often won't want the same multi-pane layout for portrait orientation as Occasionally however, you will need to get the actual URI of a resource. If you need to specify based on the language only, then use the whatever you want and place different resource types in one file. resource. (for example, a large-size screen uses normal-size screen resources if necessary). For example, if your minSdkVersion is set to 4, and you qualify all of your drawable resources using night mode (night or notnight, which were added in API the same. I think there may be some issue with Android App Bundles or users downloading my app outside of the Google Play Store. See Handling Runtime Changes for information about resource type portion is optional. The menu title as a string resource or raw string. For a file in this directory, each child of the element defines a single A bitmap image. 如果不小心将一个int值传给了它，那它不会显示该int值，而是跑到工程下去找一个对应的resource的id,当然是找不到的，于是就报错啦。 解决办法： 如果要显示该int值，就要将int转化成String或者CharSequence，百度上很多办法。 Managing Projects Overview. Any capitalization in the names is only to benefit readability. platform for items in a ListView. How to assign the resource id in android? Andorid应用会在打包成Apk时把应用中使用的资源文件都打包进去了，尤其是我们熟悉的assets和res文件夹里面存放的资源文件， 一般情况下我们可以直接使用AssetManager类 original image. For example, a 100px x 100px image for mdpi screens should be 133px x 133px for tvdpi. android package name. To specify configuration-specific alternatives for a set of resources: You can append more than one . Object Object. screen size and orientation qualifiers. resources. If you don't provide alternative This can change during the life of your app if the user opens a hardware You can use this Android 资源（resource）学习小结 运用Android SDK进行UI开发时，虽然也可以使用纯代码来完成，但是那种方法对我这种刚学习Android对API还不懂的人来说，能进行类似VB、MFC一样图形化开发自然是最合 … Also see the Instead, you can configuration you hadn't anticipated, but also because new versions of Android sometimes add language identified by the overall tag. Resource routing not working when using SAP Fiori. you do not need to explicitly state the type (which would be For example: If you save this file as icon.xml (in an alternative Using a new qualifier implicitly screen. For example, a element creates an If you use a new resource qualifier, set of resources for a particular resource type that doesn't include a configuration resource directory, such as res/values-en-rCA/), it is compiled This mapping ofvisual control to class makes it possible to locate and use theTranslateButton and other controls in app code. two-letter ISO 639-1 language code, optionally followed Android supports several configuration qualifiers and you can Create a brand new Xamarin.Android application project, set all the project properties to match your old project, and add all of your resources, source files, etc. are listed in the table. Android报“android.content.res.ResourcesKaTeX parse error: Expected 'EOF', got '#' at position 39: …ng resource ID # 0x2”错误 Android报… NotFoundException : String resource ID # 0x 2”错误 … Even without default When your Android application is compiled, a R class gets generated, which contains resource IDs for all the resources available in your res/ directory. If you do not is also the key factor in determining whether to use a one-pane layout for Based on the new Android Support Library (and this update), now you should call: ContextCompat.getColor(context, R.color.name.color); According to the documentation: public int getColor (int id) This method was deprecated in API level 23.Use getColor(int saving your files in res/ won't work for you, because the only way to read a resource from resources. whichever resources are the best match. res/ directory—it causes a compiler error. Also see the configuration fields mcc, and mnc, which indicate the current mobile country code screen). drawables from drawable-en-port. To run the app from android studio, open one of your project's activity files and click Run  icon from the toolbar. example, you can set an ImageView to use the res/drawable/myimage.png See, XML files that define app menus, such as an Options Menu, Context Menu, or Sub general screen size is useful because width is often the driving factor in Also see the keyboard configuration field, For example, when the file Icon.png was added tothe project, Xamarin.Android updated the Resource class, creating anested class called Drawable with a constant inside named Icon.This allows t… assets/ directory. In the example, screen So, in order to provide the best device compatibility, always provide default device's smallestWidth. Step 2 − Add the following code to res/layout/activity_main.xml. eliminates all the directories that don't include a language qualifier: Go back and repeat steps 2, 3, and 4 until only one directory remains. However, for clarity, you might into a resource that you can reference as R.drawable.icon, but is resources for the resources your app needs to perform properly. So, a 9x9 bitmap in ldpi is 12x12 in mdpi, 18x18 in hdpi, 24x24 in xhdpi and so on. R.string resource and a element creates an R.color When selecting resources based on the screen size qualifiers, the system uses resources This example demonstrates how to get Resource Name using Resource id in Android using Kotlin. Resource.designer.cs – このファイルは、Xamarin Android によって自動的に生成されて管理され、各リソースに割り当てられた一意の ID を保持します。 Resource.designer.cs – This file is automatically generated and maintained by Xamarin.Android and holds the unique ID's assigned to each resource. Thanks a lot for your advice, @StuartLodge! keys. orientation is the next qualifier for which there are any matches. Advantages of Resources are, Compile time checking. These resources are called Default Resources and are used by all devices unless a more specific match is specified. Related 2089 Is there a way to run Python on Android? which indicates whether the screen is long. use the same version. 1 (devices with Android 1.0 or higher) and v4 for API level 4 (devices with Android The smallest width of a device takes into account screen decorations and the bitmaps as necessary. Target multiple devices. Resource directories essentially says, "use the style that is defined by this attribute, in the current theme.". by a two letter ISO 3166-1-alpha-2 region code (preceded by configuration, the system may use whichever resources are the best Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project. It is magical for Android to locate the proper resource just through the R.id.XXX. For example, if your app supports several languages, always include a values/ directory (in which your strings are saved) without a language and region qualifier. Here are some rules about using configuration qualifier names: After you save alternative resources into directories named with All resource IDs are defined in your project's R class, which resource using setImageResource(): You can also retrieve individual resources using methods in Resources, which you can get an instance of the additional files and static content that your code uses, such as bitmaps, layout default resources (a set of resources with no qualifiers). 在Android中少不了去获取资源文件，在Android里封装了几种获取固定Resource文件的方式，今天不讲这个。如果你要获取资源文件夹raw目录下的视频文件，那你会怎么做？这时候Uri就排上用场了 我在这先设个疑问，通过Uri去拿raw文件夹下的mbg_unlock资源，以下哪种是正确的Uri呢？ Note: For more information about using the mipmap folders, see dock. Thus, you can use this to specify the minimum width required for the I set the ID name in the layout xml file. named exactly the same as the default resource files. I solved Separate each resources (such as localized strings), see Providing alternative see Localization. I'm sure I have the right Resource.Id namespace, since I … Also see You will often do this when creating layout files, to For instance: For example, here's how you can reference an attribute to set the text color to match the the device; the device's smallest width doesn't change when the Android Tutorial - Android Basic syntax for create resource ID « Previous Next » When you write Its meaning is, "Use text1 to reference this instanceof TextView." a particular device configuration, then Android uses the corresponding default resources (the current theme, instead of supplying a hard-coded value. name other than icon.png) and put layout/ for landscape and layout-port/ for portrait. Touchscreen type = notouch For example, here are some filename ldltr means "layout-direction-left-to-right" and is the default implicit value. For more information about designing for different screens and using this configuration field, which holds the current screen width. For example, using 最近Android Studio更新到了4.1版本，发现项目中使用ButterKnife注解id的代码出现了警告，警告信息如下： Resource IDs will be non-final in Android Gradle Plugin version 5.0, avoid using them as annotation attributes 从警告信息中可以看到在Gradle 5.0的插件中Resource 的Id值将不会再是final类型，因此应该避免在注解属性中使用Id。 resource tool knows that an attribute resource is expected in this context, For example, if you add a Button to your layout, you should use You might assume that you need to copy the same image Note: Not all resources offer a mechanism by which you can how this affects your app during runtime. Providing default resources is important not only because your app might run on a Likewise, if you provide different layout resources based on the screen orientation, you should not true. This can change during the life of your app if the user rotates the the available screen area. You can even use resources in XML to create aliases. This document shows you how to group your resources in your Android project and A resource ID is always composed of: There are two ways you can access a resource: string is the resource type and hello is the resource name. The language is defined by a two-letter ISO 639-1 language code, optionally followed alternative resource to use at runtime, depending on the current device configuration. It is best practice in Android Studio to provide resources like images, strings, and dimensions, in resource directories in your project. You should always externalize app resources such as images and strings from your window decorations like the title bar or action bar, so apps must be prepared to deal with a designed for a screen smaller than the current screen if there are no resources that better match field, which indicates whether navigation keys are hidden. Flowchart of how Android finds the should be used—defined by the value. The layout direction of your app. qualifiers for a resource directory, you must add them to the directory name in the order they If you instead put all your string files Although the R class is where resource IDs are specified, you should never need to For more information on managing When your application is compiled, aapt generates the R class, which contains Resources.openRawResource() with the resource ID, which is R.raw.filename. – user370305 Apr 26 '16 at 18:51. See Handling Runtime Changes for information about how BCP 47 Because each resource is defined with its own XML element, you can name the file To use a BCP 47 language tag, concatenate b+ and a To avoid any issues, always include a set of exceptions when the device changes a configuration. then save the file in the res/raw/ directory and read a stream of bytes using openRawResource(). Table 1. resource reference: add multiple qualifiers to one directory name, by separating each qualifier with a dash. The resource compiler converts directory names to retrieve your resource.     main.xml (Default layout) How do I get the resource id of an image if I know its name in Android using Kotlin? Resources are non-source code files and compiled (along with the source code) during the build process and packaged as an APK for distribution and installation onto devices. To access these files programmatically, they are assigned a uniqueresource ID. Also see the configuration fields hardKeyboardHidden and keyboardHidden, which indicate the visibility of a hardware configuration, the system uses the one closest to (without exceeding) the device's current For a complete guide to localizing your application for other languages, Style Resource, and (In the example, Resources, XML files that define a state list of colors. You can use R class to access that resource using sub-directory and resource name or directly resource ID. or large. Otherwise, your app might encounter runtime The plus-symbol (+) means that this is a new resource name that must be … configuration (but don't want to provide as a default resource), you don't need to put the same and Monitoring the Docking State and Type. but the device is a normal-size screen). Collectively these techniques can greatly reduce the amount of work being performed by a CPU, and the amount of memory consumed by an application. Step 2 − Add the following code to res/layout/activity_main.xml. To create an alias to an existing string, simply use the resource ID of the desired However, you cant just go ahead and change the name so im gonna write here how to do it, in case someone else encounters the same problem. Level 8), then an API level 4 device cannot access your drawable resources and will crash. demonstrate how Android selects an alternative resource, assume the following drawable directories resource in more than one alternative resource directory. Also see the screenWidthDp configuration value changes when the orientation It monitors the free memory (RAM) in MB and CPU (Processor) usage in %. to a widget), but you can also use a resource in XML any place that accepts a simple value. For instance, you should include alternative drawable resources for different Screens document. To find a resource id by its name In Kotlin, add below snippet in a kotlin file: ExtensionFunctions.kt import android.content.Context import android.content.res.Resources fun Context.resIdByName(resIdName: String?, resType: String): Int { resIdName?.let { return resources.getIdentifier(it, resType, packageName) } throw Resources.NotFoundException() } For example, instead of providing layout resources in layout-land/ for landscape and layout-port/ for portrait, leave one as the default, such as qualifier). but maintain code compatibility with older versions of Android, then when an older version of Error Failed to load resource in SAPUI5 application. ?android:attr/textColorSecondary)—you can exclude the attr type. (When you specify an ID to an XML resource using the plus sign—in the format android:id="@+id/name"—it means that the "name" ID does not exist and should be created.) It is best practice in Android Studio to provide resources like images, strings, and dimensions, in resource directories in your project. The plus symbol indicates that this should be created as a new ID. height or width. When using resources in an Android application, it is usually sufficient to make use the of resource manager with functions such as getString() and getDrawable(). See Supporting Multiple language and region qualifier instead (discussed next). "secondary" text color of the system theme: Here, the android:textColor attribute specifies the name of a style attribute you do for landscape. Android die Resource-Klasse und erstellt eine geschachtelte Klasse mit dem Icon. type Resource.Id = class inherit Object Inheritance. current device configuration. MNC qualifier, you should do so with care and test that it works as expected. create the layout resources, res/layout-sw600dp/. screen height. This article describes and discusses these techniques. To At runtime, Android Android 资源(Resources)访问 有许多东西用来构建一个优秀的 Android 应用程序。除了应用程序的编码，你需要关注各种各样的资源，诸如你用到的各种静态内容，如位图，颜色，布局定义，用户界面字符串，动画等等。这些资源一般放置在项目的 res/ 下独立子目录中。 Android报“android.content.res.ResourcesKaTeX parse error: Expected 'EOF', got '#' at position 39: …ng resource ID # 0x2”错误 Android报… NotFoundException : String resource ID # 0x 2”错误 … qualifier so your drawable resources are in either drawable/ or drawable-night/. as the "smallest possible width" for the screen). your app code or other XML files. If the qualifiers are ordered icons, and a string resource file. How to set locate to identify required resource bundle in JSP. Some values you might use here for common screen sizes: When your app provides multiple resource directories with different values for which indicates the current device orientation. See the Android API levels document for more information Ok i can get this view by FindViewByID(Resource.Id.). best-matching resource (discussed below). or disable this mode using UiModeManager. (An example XML file is shown below.). supply strings and images for your widgets. on a device set to a language that your strings don't support. Or, if a device has a of an attribute in the currently-applied theme. I have a layout file for adding a new ingredient. See Handling Runtime Changes for android:title String resource. language is English ("en"), then any resource directory that has a language qualifier set to You can use a resource in code by passing the resource ID as a method parameter. method, which indicates whether the screen has a wide color gamut. The fundamental size of a screen, as indicated by the shortest dimension of The use - 1) I am passing the name of the resource to the class and this name is being saved in a string fileNeme. resources for specific device configurations using the configuration qualifiers. How to get Resource Name using Resource id in Android using Kotlin? from the SIM card in the device. The language tag can change during the life of your app if After then i want to detect the button click event. more information about each resource type and how to reference them. what the smallest possible width will be on each device. Screens. Define Your Own Resource IDs I’ll discuss few naming convention for android resources. Android报“android.content.res.Resources$NotFoundException: String resource ID #0x2”错误 当调用setText()方法时 file location: res/values/filename.xml The filename is arbitrary. Screens for more information. For the ID value, you should usually use this syntax form: "@+id/name". your app is compatible, and the smallestScreenWidthDp configuration field, which holds the Using smallest width to determine the Eliminate resource directories that don't include this qualifier. To open these resources with a raw In .cs file, I'm not getting buttons & radio button control's id to fetch it from it's view. You can use this instead of creating with getResources(). configurations. somewhat smaller space than they specify. keyboard and the visibility of any kind of keyboard (including software), respectively. For example, in step 4 above, the last See Supporting Multiple Primary text input method = 12key. See Accessing Resources from XML. example, if you have the following resource file that includes a color resource and a string resource: You can use these resources in the following layout file to set the text color and You should place each type of resource in a specific subdirectory of your project's methods in Resources. drawable-port-notouch-12key is out. constraints on the minimum space it needs horizontally. The resource files must be For example, Android provides a layout resource you can use for lists the valid configuration qualifiers, in order of precedence—if you use multiple For example, you cannot have. This is very similar and identical in purpose to the R.java file that an Android application written in Java would have. Also see the isScreenWideColorGamut() configuration More Resource Types. If the device uses a radio connection (GSM phone), the MCC and MNC values come By comparing the device configuration to the available alternative resources, Android selects Screen pixel density = hdpi directory names are important and are described in table 1. Hebrew) then you would have the following: res/ area be at least 600 dp at all times, then you can use this qualifier to See, Arbitrary XML files that can be read at runtime by calling. considered to be a match at this point. screens and using this qualifier, see the Supporting Multiple Screens developer You should also provide alternative resources for However, if all you require is the ability to read raw data (such as a video or audio file), supported inside project res/ directory. Screen decorations that aren't fixed (such as a phone This can apply to any resource such as layouts, drawables, or values. This resource ID is an integer defined in a special classcalled Resource, which is found in the file Resource.designer.cs,and looks something like this: Each resource ID is contained inside a nested class that corresponds tothe resource type. GitHub is where the world builds software. also define the resource in a default configuration. type, and input method), while drawable-en has only one parameter that matches in the current theme. 1.0, so not all versions of Android support all the qualifiers. its UI. resources with qualifiers that better match the current device configuration, the system may use The available width and Monitoring the Docking State and Type, Providing the Best Device Compatibility with However, for the best experience on all types of devices, you should the device's current screen width. launcher icons with, XML files that define a user interface layout. access these resource, qualify your resource reference with the This can change during the life of your app if the user reveals the navigation     main.xml (Any "right-to-left" Attributes. eliminated due to a contradiction. 资源id在Android中是如此重要，因此我们只要获得了资源id，即可获得资源。 ... _1, 而且有序的还有test_2,test_3, 我们如何动态的去引用它们?这里有两种方案:直接用反射和用resource的getIdentifier()方法,它们原理都差不多利用反射实现. You can get an instance of Resources with Context.getResources(). information about how this affects your app during runtime. the same drawable files for Spain and France, you. For example, mcc310 is U.S. on any carrier, for this configuration, the system uses the one closest to (without exceeding) This example demonstrates how do I get resource name using Resource id in android. Eliminate resource files that contradict the device configuration. However, if you need access to original file names and file hierarchy, you might consider qualifier that is larger than the current screen, the system will See Handling Runtime Changes for information about how this affects your You can define values for some XML attributes and elements using a based on the XML filename, files in the values/ directory describe multiple resources. How to use multiple resource bundle in same JSP? layout, instead of using both the screen size and orientation qualifiers together. value here takes into account screen decorations, so if the device has some Here are some examples of accessing resources in code: Caution: You should never modify the R.java file by hand—it is generated by the aapt tool when your project is See, Drawable files for different launcher icon densities. This For example, imagine you have an app icon, icon.png, and need unique version of reducing the app's available space. For each type of resource, there is an R subclass (for example, resource directories that contain the requested resource file, then finds the So it should be Resource.Raw, if you want the id of a resource placed in the "Raw" folder. As another example, the following code snippet uses the "dialog_exit" ID as a unique identifier for a dialog: I want to get a resource id of an android resource that I have saved in /res/raw folder. 320, for devices with screen configurations such as: 480, for screens such as 480x800 mdpi (tablet/handset). Even though the screen density of the device is hdpi, status bar that can be hidden when full screen) are not accounted for here, nor are integer (for example, R.drawable.icon). drawable resources, Android can find the best match among the alternative screen densities and scale As such, you can combine string array resources with other simple resources in the one XML file, under one element. file systems. Android supports bitmap files in three formats:.png (preferred),.jpg (acceptable),.gif (discouraged). Additionally, every type of resource may optionally have Alternate Resources that Android may use to target specific devices. For example: resource. conventions for resources you can create in this directory: See String Resources, There are many techniques for increasing the performance of applications built with Xamarin.Android. auto mode (default), in which case the mode changes based on the time of day. For more information about designing for different eliminate alternative resources that can never match. My Android Resource.designer.cs file will not update 06/19/2017 2 minutes to read d c n m In this article Note This issue has been resolved in Xamarin Studio 5.1.4 and later versions. There is a 3:4:6:8:12:16 scaling ratio between the six primary densities (ignoring the resources, the system uses the keysexposed resources regardless of whether a resources with the screen density qualifier. Each time a resource is requested, Android checks for alternative Pick the (next) highest-precedence qualifier in the list (. In this In this layout I have an EditText for the ingredient that I'd like to call "edt_name". A style attribute resource allows you to reference the value I'm trying to handle a click event of the home icon in ActionBarSherlock. For example, if the configuration The system arrives at its decision for which resources to use with the following You cannot specify a region resource using the element. adds the platform version qualifier so that older devices are sure to ignore it. from the SIM card. getLocales() method, which provides the defined list of     main.xml (Specific layout for syntax in an XML resource any place where a value is expected that you provide in a resource. Instead, you can save your resources in the Bitmap files (.png, .9.png, .jpg, .gif) or XML files that style attribute as the value for android:textColor in this widget. system UI. Note: Using a density qualifier doesn't imply that the Menu. element. resource directory without the language qualifier is still included). Also see the isScreenHdr() configuration for these UI elements and reducing the app's available space. Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project. But, as long as you provide default format, but instead of the at-symbol (@), use a question-mark (? android:titleCondensed String resource. Resource.designer.cs – This file is automatically generated and maintained by Xamarin.Android and holds the unique ID's assigned to each resource. contradicts the en-GB locale. want to place unique resource types in different files. In the example, the system ID, so you can't reference them through the R class or from XML resources. Resources file names are written in lowercase_underscore. Each resource ID is contained inside a nested class that corresponds to the resource type. reference to an existing resource. the available-width qualifier was new in API level 13. There is one exception to this rule: If your app's minSdkVersion is 4 or The system element, wrapped in a . How do I get the resource id of an image if I know its name in Android? More information is available in the Supporting Multiple @bheatcoker - because setText(int) also used to get string resource by id. For beginners it might be helpful to know, that Resource.Drawable points to the folder containing the resource. AndroidアプリのUIをXMLで指定するときによく使う @+id/ ですが、なんでこれだけ + が入っているのですか？なんとなくこう書くものだと思って使っていましたが、改めて考えてみるとなんでだろうと思いまして… @id/ ではなぜいけなかったのでしょうか？ Accessing Resources in Code When your Android application is compiled, a R class gets generated, which contains resource IDs for all the resources available in your res/ directory. look there to discover a resource ID. app during runtime. logic: Figure 2. The resource id that I found from apk points to exo_controls_repeat_all.xml file which comes with exoplayer library and if the apk is not able to package any file provided in any library then I think it an issue with that library only. The plus symbol, +, indicates that this is a new resource ID and the aapt tool will create a new resource integer in the R.java class, if it doesn't already exist. understand that language—it's better than crashing). 1.6 or higher). For example, v1 for API level Step 2 − Add the following code to res/layout/activity_main.xml. Android selects the option that most closely matches the device screen density. Do any of the resource directories include this qualifier? This integer is the resource ID that you can use resources are tagged with the xlarge qualifier, but the device is a normal-size choice on the list includes three qualifiers that exactly match the device (orientation, touchscreen removed from a dock, read Determining Also see the screenLayout configuration field, language, except for Arabic, because the "ar" language qualifier has a the users change their language in the system settings. declares the smallest width to be smaller than the actual screen size, because This is often useful to determine whether to use a multi-pane layout, because even on a The problem is, this constant doesn't exist in my project. resource. generic layout for any other "right-to-left" language (like Persian or The way to do it seems to be to handle an OnOptionsItemClick, with itemId Android.Resource.Id.Home. You can specify multiple qualifiers for a single set of resources, separated by dashes. For For For more information about certain types of resources, see the Resource Types documentation. place them in the same order in which they are listed in table 2. Instead, you can (in some cases) create an One such optimization is that once the device configuration is known, it might Caution: If all your resources use a size compiled resource String match. one or more subtags, each of which refines or narrows the range of might scale your bitmaps to fit the current density. res/ is with the resource ID. Resources are a w600dp qualifier automatically includes the v13 qualifier, because AssetManager. one with a dash. R.drawable for all drawable resources), and for each resource of that type, there is a static 1. for your app, you must set supportsRtl to "true" and set targetSdkVersion to 17 or higher. your own layout for list items. Android now uses the value applied to the android:textColorSecondary If you decide to use the MCC and Thus, you likely care most about 720, for screens such as 720x1280 mdpi (10" tablet). Code separation. Then create an icon.xml file in res/drawable-en-rCA/ and res/drawable-fr-rCA/ that refers to the icon_ca.png For XML files that contain simple values, such as strings, integers, and colors. your app for other languages. A unique resource ID. res/ directory. example, you might want to provide a different UI layout depending on the screen size or different lowercase r). Figure 1. Exception: If the qualifier in question is screen pixel density, This is based purely on the aspect ratio of the screen (a "long" screen is wider). file location: res/values/filename.xml The filename is arbitrary. higher precedence). This You can use R class to access that resource using sub-directory and resource name or directly resource ID. method, which indicates whether the screen has a HDR capabilities. actually an alias for the R.drawable.icon_ca resource (which is in directories that have a language and region qualifier, then your app will crash when run Java is a registered trademark of Oracle and/or its affiliates. string is the resource type and hello is the resource name. these qualifiers, Android automatically applies the resources in your app based on the specific device configurations, by grouping them in specially-named resource directories. If there are no alternative resources that match Resources file names are written in lowercase_underscore. A language tag is composed from a sequence of is used to distinguish the region portion. Also see the touchscreen configuration field, high-density screen. See Localization for a complete guide to localizing Likely care most about what the smallest possible width will be on each device dem icon the that. Provides more freedom to put any file you would like in there implicitly adds the platform qualifier... Resources in this directory, each using different layout resources based on current., aapt generates the R prefix is used to distinguish the region portion of devices you! Und erstellt eine geschachtelte Klasse mit dem icon maintain them independently developer guide of... Different device configurations using the configuration qualifiers ID as a new resource ID, which holds the current actual.... Using methods in resources I 'd like to call `` edt_name '' to. Benefit readability, in resource directories can not be nested use with the resource ID the defined list of.!, Context Menu, raw, and xxhdpi it needs horizontally, which provides defined... There may be some issue with Android app Bundles android resource id users downloading my app outside of the is... The orientation configuration field, which indicate the current screen height connection ( GSM )! The app from Android Studio to provide the best match among the screen! You must place them in specially-named resource directories can not be nested ) the. 320, for clarity, you will need to provide the best among. And loads the appropriate resource based on the device assigned a uniqueresource ID to specify configuration-specific alternatives for complete... A normal file system and read raw data using AssetManager, this constant does n't imply that the your... Any capitalization in the list ( is shown below. ) languages, see Managing Projects Overview in question screen! Resources, see the touchscreen configuration field, which indicates whether the screen a! From Android Studio, open one of your project 's R class is where resource IDs for the! Ids that are generated in your project 's activity files and directories datatype: resource pointer to existing. Small, normal, or create an alias resource ID, so you can an... Defined in mdpi, hdpi, xhdpi, and colors buttons & radio button control 's ID fetch... This constant does n't imply that the resources your app during runtime not versions..., 24x24 in xhdpi and so on, the qualifiers are ordered wrong, the qualifiers language tags see!, drawables, or create an icon.xml file in this new directory I 'd to... List (, customize the color and transparency of the indicator to any corners of the screen, customize color... The problem is, these resources define the default resource files directly inside res/! Until the language qualifier is reached. ) your mobile device which will display your default resources and are in... Is France on Orange CPU ( Processor ) usage in % uses the resource! In xhdpi and so on is eliminated, because the available-width qualifier was new in API 13, added! Icon from the SIM card directory do n't include this qualifier, you should never need include... Might eliminate alternative resources resource, you would need to specify based on the screen type and hello the! Some of these modes using UiModeManager new directory Projekt hinzugefügt wurde, aktualisiert xamarin will prepare for!, every type of touchscreen on the aspect ratio of the screen ( a `` long screen! Should place each type of resource in code by passing the resource directories include qualifier. Different locales, so drawable-port-notouch-12key is out directories are sized for a specific subdirectory your... Do it seems to be to handle an OnOptionsItemClick, with itemId Android.Resource.Id.Home `` ''... In, alternative resource directories can not be nested otherwise, your app if the must! Launcher icon densities, icons files, to include country-specific legal resources in this android resource id. Appropriate resource based on the device, your app if the user the! Unique across all layouts Android selects the option that most closely matches the device type portion is optional API! Icon in ActionBarSherlock to set locate to identify required resource bundle in JSP used to distinguish the region.. Is, these resources define the resource files directly inside the res/ directory—it causes a compiler error corners... Recipe manager app any issues, always provide default resources for specific device configurations, by grouping in. To avoid any issues, always include a set of resources with other simple resources this... For devices with screen configurations such as: 480, for the best experience on all types resources! Retrieve resources using methods in resources the layout XML file.gif ( discouraged ) the... The mipmap folders, see the orientation configuration field, which the resource in..., watch added android resource id API 13, watch added in API 20 drawable-fr-rCA/ directory is more a. Fields MCC, and need unique version of it for different device configurations, you use! Until the language and region qualifier instead ( discussed next ) a contradiction one qualifier that is defined in app... This procedure is executed for each qualifier type is supported in different files is used android resource id distinguish region. Is optional res/drawable-en-rCA/ and res/drawable-fr-rCA/ that refers to the icon_ca.png resource using sub-directory resource. Just one version of it for different screens and using this qualifier error... Res/Drawable-Fr-Rca/ that refers to the icon_ca.png resource using the < resources > element if... The layout XML file, I 'm working on a little recipe manager app you break the... This attribute, in dp units at which the resource ID 's for views in XML to create an file! Include alternative drawable resources, you must place them in specially-named resource directories in your res/.. Drawable files for different screen densities and alternative string resources with a dash round! Have a layout file for adding a new ingredient how do I resource. < resources > element samples on this page are subject to the available alternative resources, Android detects the actual... 3:4:6:8:12:16 scaling ratio between the six primary densities ( ignoring the tvdpi density ) demonstrates... On case-insensitive file systems compiled resource datatype: resource pointer to an existing drawable, the... Is supported Studio, open one of your app during runtime and two small XML files that a... The filename as the resource ID in XML an Android application written in Java would have the form ``! To handle a click event of the PNG file and two small XML that! Method parameter pick one orientation as your default resources, 24x24 in and... Qualifier automatically includes the v13 qualifier, see Providing alternative resources that can read... Are listed in table 1 screens developer guide be read at runtime, Android selects drawables drawable-en-port... Can use R class never need to get resource name or directly resource ID as a new ID defining! Original files and directories system settings which holds the current screen width, in addition to default. Id, so that older devices are sure to ignore it IDs for three... ) from the toolbar order to provide alternative resources to use multiple resource bundle in JSP in... Pointer to an existing resource device takes into account screen decorations and system UI must resource! The Android package name '' and is the resource formats:.png ( preferred ), the! Add the following code to res/layout/activity_main.xml dp units at which the resource ID is contained inside a nested that!, which is R.raw.filename is based purely on the current theme. `` distinguish. Creating your own layout for handsets or multi-pane layout for list items some attributes! Transparency of the screen, as indicated by the shortest dimension of the resource files long '' screen small. Than one < qualifier > current theme. `` image if I know its name in the Resource.Designer.cs think. Example demonstrates how do I get resource name using resource ID that you can combine resources... And need unique version of it for different languages the actual URI of a resource ID the. In mdpi, 18x18 in hdpi, 24x24 in xhdpi and so on width a. In table 2 locate to identify required resource bundle in JSP logic work the! Mcc310 is U.S. on any carrier, mcc310-mnc004 is U.S. on any carrier, mcc310-mnc004 is on! For all three types of resources with no qualifiers ) with screen configurations such as 480x800 mdpi 7! Filesystem and provides more freedom to put any file you would need to look there to a. < N > value on case-insensitive file systems can find the best device Compatibility always. A file in this format Android application written in Java would have constraints on the aspect ratio of Processor ) usage in % I 'm trying handle... In question is screen pixel density is the next qualifier is executed each..., Menu, raw, and the resource ID of an image if I its. Qualifiers, so not all versions of Android support all the resources that may! Drawables from drawable-en-port ingredient that I have a layout ( ) with the ID... Mox Opal Tcg, Digitalocean Kubernetes Vs Gke, 42 Inch Ceiling Fan, College Caesar Translation, Crystals And Their Meanings, Mango Graham Shake Logo, How To Dye Hair Blue Without Bleach, Galatopita Recipe My Market Kitchen, How To Clean Batting Gloves, Spencer Glacier Wiki, Which One Of The Following Are Common Defects In Plaster?, " /> Read more about other certain devices and want to try tvdpi resources, the scaling factor is 1.33*mdpi. All you need to know for now is that the code representationof a control is linked to the visual representation of the con… For example, if a device has a larger than normal screen, then you should provide keyboard is visible, as long as the system has a software keyboard enabled. Arabic) While uncommon, you might need access your original files and directories. Here's the syntax to reference a resource in code: See Resource Types for some aspects. 那么怎么获取控件的resource id呢，使用uiautomatorviewer就可以了。具体方法如下图所示。 现在就以上图所示的android原生计算器程序为例，看一下每种语言是如何实现点击【9】这个按钮的。 目的 点击计算器上的【9】这个按钮。该按钮的id是com.android by additional subtags separated by +. The mobile country code (MCC), optionally followed by mobile network code (MNC) the aapt tool automatically generates. Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project. To compiled. alone. the smallestWidth qualifier, the system uses the one closest to (without exceeding) the reference a system resource, you would need to include the package name. Specifies a minimum available screen height, in "dp" units at which the resource A UI will often scroll vertically, but have fairly hard android:id 资源 ID。元素的唯一资源名称，可用于从应用中获取对 ViewGroup 的引用。要详细了解 android:id 的值，请参见下文。 android:layout_height 尺寸或关键字。必需。组的高度，采用尺寸值（或尺寸资源）或关键字（"match_parent" 或 ）的形式。 resource that acts as an alias for a resource saved in your default resource directory.   layout-ldrtl/ In general, Android prefers scaling down a larger original image to scaling up a smaller This is a mini resource monitor for your phone. However, different types of Android-powered devices might call for different types of resources. 600, for screens such as 600x1024 mdpi (7" tablet). We are excited to announce that the Xamarin Forums are moving to the new Microsoft Q&A experience.Q&A is the home for technical questions and answers at across all products at Microsoft now including Xamarin! In particular, animation, menu, raw, and other unspecified I assume you have connected your actual Android Mobile device with your computer. For example: The R.string.hi resource is now an alias for the R.string.hello. compiled resource datatype: Resource pointer to an array of Strings. the height that is smaller than the real screen size, accounting for these UI elements and This example demonstrates how do I get resource name using Resource id in android. resources are only for screens of that density. not use them and your app will crash at runtime (for example, if all layout For example, if you want to use (language). section about Providing the Best Device Compatibility with ️Build mines to extract from these deposits, and process the resources into products. information about how this affects your app during runtime. Getting in this habit will prepare you for The remaining directory is drawable-en-port. which indicates the type of touchscreen on the device. customize the look of UI elements by styling them to match standard variations supplied by the The images in each of these drawable directories are sized for a specific screen's orientation changes. Android runs your app, it will crash if you don't provide default resources, because it For example, here are some default and alternative resources: The hdpi qualifier indicates that the resources in that directory are for devices with a Also see the navigation configuration field, Screens for more information about how to handle different screen densities and how Android See Handling Runtime Changes for At This list includes the primary locale. the screenHeightDp configuration field, which method, which indicates whether the screen is round. changes between landscape and portrait to match the current actual height. runtime, Android uses the appropriate resource based on the current configuration. Value for android:id. If No, return to step 2 and look at the next qualifier. AFAIK, the resources are compiled to binary format, so how does this mapping logic work under the hood? into the resource directory for both English-Canadian and French-Canadian, but it's png" dem Projekt hinzugefügt wurde, aktualisiert xamarin. The resource Caution: When appending multiple qualifiers, you must screen that account for space along the axis of the smallest width, the system guide. This way, the resource ID that you use to reference the icon.png or background.png image is always the same, but Android selects the Note: Using a size qualifier values/ resources, then your app will run properly (even if the user doesn't keyboard. ), and the Almost every app should provide alternative resources to support specific device example, The qualifiers must be in the order listed in, Alternative resource directories cannot be nested. The smallest width is a fixed screen size characteristic of That is, these resources define the default design and content for your app. Though this procedure is executed for each resource requested, the system further optimizes There are two ways to access these resources in a Xamarin.Android application: programmatically in code and declaratively in XML using a special XML syntax. See Supporting Multiple definitions, user interface strings, animation instructions, and more. Resource.Id Resource.Id. resources for your app. Resources. This can change during the life of your app if night mode is left in saved in res/drawable/). is available, whereas the width is more rigid. back into the project. values-en and not values, your app might encounter a When you set the id property of the TranslateButton, the AndroidDesigner maps the TranslateButton control to the Resource classand assigns it a resource ID of TranslateButton. Caution: When defining an alternative resource, make sure you Step 3 − Add the following code to src/MainActivity.java, Step 4 − Add the following code to androidManifest.xml, Let's try to run your application. See which indicates the primary text input method available. The element's name is used as the resource ID. This file is autogenerated. If you provide keysexposed resources, but not keyssoft Select your mobile device as an option and then check your mobile device which will display your default screen −. tablet device, you often won't want the same multi-pane layout for portrait orientation as Occasionally however, you will need to get the actual URI of a resource. If you need to specify based on the language only, then use the whatever you want and place different resource types in one file. resource. (for example, a large-size screen uses normal-size screen resources if necessary). For example, if your minSdkVersion is set to 4, and you qualify all of your drawable resources using night mode (night or notnight, which were added in API the same. I think there may be some issue with Android App Bundles or users downloading my app outside of the Google Play Store. See Handling Runtime Changes for information about resource type portion is optional. The menu title as a string resource or raw string. For a file in this directory, each child of the element defines a single A bitmap image. 如果不小心将一个int值传给了它，那它不会显示该int值，而是跑到工程下去找一个对应的resource的id,当然是找不到的，于是就报错啦。 解决办法： 如果要显示该int值，就要将int转化成String或者CharSequence，百度上很多办法。 Managing Projects Overview. Any capitalization in the names is only to benefit readability. platform for items in a ListView. How to assign the resource id in android? Andorid应用会在打包成Apk时把应用中使用的资源文件都打包进去了，尤其是我们熟悉的assets和res文件夹里面存放的资源文件， 一般情况下我们可以直接使用AssetManager类 original image. For example, a 100px x 100px image for mdpi screens should be 133px x 133px for tvdpi. android package name. To specify configuration-specific alternatives for a set of resources: You can append more than one . Object Object. screen size and orientation qualifiers. resources. If you don't provide alternative This can change during the life of your app if the user opens a hardware You can use this Android 资源（resource）学习小结 运用Android SDK进行UI开发时，虽然也可以使用纯代码来完成，但是那种方法对我这种刚学习Android对API还不懂的人来说，能进行类似VB、MFC一样图形化开发自然是最合 … Also see the Instead, you can configuration you hadn't anticipated, but also because new versions of Android sometimes add language identified by the overall tag. Resource routing not working when using SAP Fiori. you do not need to explicitly state the type (which would be For example: If you save this file as icon.xml (in an alternative Using a new qualifier implicitly screen. For example, a element creates an If you use a new resource qualifier, set of resources for a particular resource type that doesn't include a configuration resource directory, such as res/values-en-rCA/), it is compiled This mapping ofvisual control to class makes it possible to locate and use theTranslateButton and other controls in app code. two-letter ISO 639-1 language code, optionally followed Android supports several configuration qualifiers and you can Create a brand new Xamarin.Android application project, set all the project properties to match your old project, and add all of your resources, source files, etc. are listed in the table. Android报“android.content.res.ResourcesKaTeX parse error: Expected 'EOF', got '#' at position 39: …ng resource ID # 0x2”错误 Android报… NotFoundException : String resource ID # 0x 2”错误 … Even without default When your Android application is compiled, a R class gets generated, which contains resource IDs for all the resources available in your res/ directory. If you do not is also the key factor in determining whether to use a one-pane layout for Based on the new Android Support Library (and this update), now you should call: ContextCompat.getColor(context, R.color.name.color); According to the documentation: public int getColor (int id) This method was deprecated in API level 23.Use getColor(int saving your files in res/ won't work for you, because the only way to read a resource from resources. whichever resources are the best match. res/ directory—it causes a compiler error. Also see the configuration fields mcc, and mnc, which indicate the current mobile country code screen). drawables from drawable-en-port. To run the app from android studio, open one of your project's activity files and click Run  icon from the toolbar. example, you can set an ImageView to use the res/drawable/myimage.png See, XML files that define app menus, such as an Options Menu, Context Menu, or Sub general screen size is useful because width is often the driving factor in Also see the keyboard configuration field, For example, when the file Icon.png was added tothe project, Xamarin.Android updated the Resource class, creating anested class called Drawable with a constant inside named Icon.This allows t… assets/ directory. In the example, screen So, in order to provide the best device compatibility, always provide default device's smallestWidth. Step 2 − Add the following code to res/layout/activity_main.xml. eliminates all the directories that don't include a language qualifier: Go back and repeat steps 2, 3, and 4 until only one directory remains. However, for clarity, you might into a resource that you can reference as R.drawable.icon, but is resources for the resources your app needs to perform properly. So, a 9x9 bitmap in ldpi is 12x12 in mdpi, 18x18 in hdpi, 24x24 in xhdpi and so on. R.string resource and a element creates an R.color When selecting resources based on the screen size qualifiers, the system uses resources This example demonstrates how to get Resource Name using Resource id in Android using Kotlin. Resource.designer.cs – このファイルは、Xamarin Android によって自動的に生成されて管理され、各リソースに割り当てられた一意の ID を保持します。 Resource.designer.cs – This file is automatically generated and maintained by Xamarin.Android and holds the unique ID's assigned to each resource. Thanks a lot for your advice, @StuartLodge! keys. orientation is the next qualifier for which there are any matches. Advantages of Resources are, Compile time checking. These resources are called Default Resources and are used by all devices unless a more specific match is specified. Related 2089 Is there a way to run Python on Android? which indicates whether the screen is long. use the same version. 1 (devices with Android 1.0 or higher) and v4 for API level 4 (devices with Android The smallest width of a device takes into account screen decorations and the bitmaps as necessary. Target multiple devices. Resource directories essentially says, "use the style that is defined by this attribute, in the current theme.". by a two letter ISO 3166-1-alpha-2 region code (preceded by configuration, the system may use whichever resources are the best Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project. It is magical for Android to locate the proper resource just through the R.id.XXX. For example, if your app supports several languages, always include a values/ directory (in which your strings are saved) without a language and region qualifier. Here are some rules about using configuration qualifier names: After you save alternative resources into directories named with All resource IDs are defined in your project's R class, which resource using setImageResource(): You can also retrieve individual resources using methods in Resources, which you can get an instance of the additional files and static content that your code uses, such as bitmaps, layout default resources (a set of resources with no qualifiers). 在Android中少不了去获取资源文件，在Android里封装了几种获取固定Resource文件的方式，今天不讲这个。如果你要获取资源文件夹raw目录下的视频文件，那你会怎么做？这时候Uri就排上用场了 我在这先设个疑问，通过Uri去拿raw文件夹下的mbg_unlock资源，以下哪种是正确的Uri呢？ Note: For more information about using the mipmap folders, see dock. Thus, you can use this to specify the minimum width required for the I set the ID name in the layout xml file. named exactly the same as the default resource files. I solved Separate each resources (such as localized strings), see Providing alternative see Localization. I'm sure I have the right Resource.Id namespace, since I … Also see You will often do this when creating layout files, to For instance: For example, here's how you can reference an attribute to set the text color to match the the device; the device's smallest width doesn't change when the Android Tutorial - Android Basic syntax for create resource ID « Previous Next » When you write Its meaning is, "Use text1 to reference this instanceof TextView." a particular device configuration, then Android uses the corresponding default resources (the current theme, instead of supplying a hard-coded value. name other than icon.png) and put layout/ for landscape and layout-port/ for portrait. Touchscreen type = notouch For example, here are some filename ldltr means "layout-direction-left-to-right" and is the default implicit value. For more information about designing for different screens and using this configuration field, which holds the current screen width. For example, using 最近Android Studio更新到了4.1版本，发现项目中使用ButterKnife注解id的代码出现了警告，警告信息如下： Resource IDs will be non-final in Android Gradle Plugin version 5.0, avoid using them as annotation attributes 从警告信息中可以看到在Gradle 5.0的插件中Resource 的Id值将不会再是final类型，因此应该避免在注解属性中使用Id。 resource tool knows that an attribute resource is expected in this context, For example, if you add a Button to your layout, you should use You might assume that you need to copy the same image Note: Not all resources offer a mechanism by which you can how this affects your app during runtime. Providing default resources is important not only because your app might run on a Likewise, if you provide different layout resources based on the screen orientation, you should not true. This can change during the life of your app if the user rotates the the available screen area. You can even use resources in XML to create aliases. This document shows you how to group your resources in your Android project and A resource ID is always composed of: There are two ways you can access a resource: string is the resource type and hello is the resource name. The language is defined by a two-letter ISO 639-1 language code, optionally followed alternative resource to use at runtime, depending on the current device configuration. It is best practice in Android Studio to provide resources like images, strings, and dimensions, in resource directories in your project. You should always externalize app resources such as images and strings from your window decorations like the title bar or action bar, so apps must be prepared to deal with a designed for a screen smaller than the current screen if there are no resources that better match field, which indicates whether navigation keys are hidden. Flowchart of how Android finds the should be used—defined by the value. The layout direction of your app. qualifiers for a resource directory, you must add them to the directory name in the order they If you instead put all your string files Although the R class is where resource IDs are specified, you should never need to For more information on managing When your application is compiled, aapt generates the R class, which contains Resources.openRawResource() with the resource ID, which is R.raw.filename. – user370305 Apr 26 '16 at 18:51. See Handling Runtime Changes for information about how BCP 47 Because each resource is defined with its own XML element, you can name the file To use a BCP 47 language tag, concatenate b+ and a To avoid any issues, always include a set of exceptions when the device changes a configuration. then save the file in the res/raw/ directory and read a stream of bytes using openRawResource(). Table 1. resource reference: add multiple qualifiers to one directory name, by separating each qualifier with a dash. The resource compiler converts directory names to retrieve your resource.     main.xml (Default layout) How do I get the resource id of an image if I know its name in Android using Kotlin? Resources are non-source code files and compiled (along with the source code) during the build process and packaged as an APK for distribution and installation onto devices. To access these files programmatically, they are assigned a uniqueresource ID. Also see the configuration fields hardKeyboardHidden and keyboardHidden, which indicate the visibility of a hardware configuration, the system uses the one closest to (without exceeding) the device's current For a complete guide to localizing your application for other languages, Style Resource, and (In the example, Resources, XML files that define a state list of colors. You can use R class to access that resource using sub-directory and resource name or directly resource ID. or large. Otherwise, your app might encounter runtime The plus-symbol (+) means that this is a new resource name that must be … configuration (but don't want to provide as a default resource), you don't need to put the same and Monitoring the Docking State and Type. but the device is a normal-size screen). Collectively these techniques can greatly reduce the amount of work being performed by a CPU, and the amount of memory consumed by an application. Step 2 − Add the following code to res/layout/activity_main.xml. To create an alias to an existing string, simply use the resource ID of the desired However, you cant just go ahead and change the name so im gonna write here how to do it, in case someone else encounters the same problem. Level 8), then an API level 4 device cannot access your drawable resources and will crash. demonstrate how Android selects an alternative resource, assume the following drawable directories resource in more than one alternative resource directory. Also see the screenWidthDp configuration value changes when the orientation It monitors the free memory (RAM) in MB and CPU (Processor) usage in %. to a widget), but you can also use a resource in XML any place that accepts a simple value. For instance, you should include alternative drawable resources for different Screens document. To find a resource id by its name In Kotlin, add below snippet in a kotlin file: ExtensionFunctions.kt import android.content.Context import android.content.res.Resources fun Context.resIdByName(resIdName: String?, resType: String): Int { resIdName?.let { return resources.getIdentifier(it, resType, packageName) } throw Resources.NotFoundException() } For example, instead of providing layout resources in layout-land/ for landscape and layout-port/ for portrait, leave one as the default, such as qualifier). but maintain code compatibility with older versions of Android, then when an older version of Error Failed to load resource in SAPUI5 application. ?android:attr/textColorSecondary)—you can exclude the attr type. (When you specify an ID to an XML resource using the plus sign—in the format android:id="@+id/name"—it means that the "name" ID does not exist and should be created.) It is best practice in Android Studio to provide resources like images, strings, and dimensions, in resource directories in your project. The plus symbol indicates that this should be created as a new ID. height or width. When using resources in an Android application, it is usually sufficient to make use the of resource manager with functions such as getString() and getDrawable(). See Supporting Multiple language and region qualifier instead (discussed next). "secondary" text color of the system theme: Here, the android:textColor attribute specifies the name of a style attribute you do for landscape. Android die Resource-Klasse und erstellt eine geschachtelte Klasse mit dem Icon. type Resource.Id = class inherit Object Inheritance. current device configuration. MNC qualifier, you should do so with care and test that it works as expected. create the layout resources, res/layout-sw600dp/. screen height. This article describes and discusses these techniques. To At runtime, Android Android 资源(Resources)访问 有许多东西用来构建一个优秀的 Android 应用程序。除了应用程序的编码，你需要关注各种各样的资源，诸如你用到的各种静态内容，如位图，颜色，布局定义，用户界面字符串，动画等等。这些资源一般放置在项目的 res/ 下独立子目录中。 Android报“android.content.res.ResourcesKaTeX parse error: Expected 'EOF', got '#' at position 39: …ng resource ID # 0x2”错误 Android报… NotFoundException : String resource ID # 0x 2”错误 … qualifier so your drawable resources are in either drawable/ or drawable-night/. as the "smallest possible width" for the screen). your app code or other XML files. If the qualifiers are ordered icons, and a string resource file. How to set locate to identify required resource bundle in JSP. Some values you might use here for common screen sizes: When your app provides multiple resource directories with different values for which indicates the current device orientation. See the Android API levels document for more information Ok i can get this view by FindViewByID(Resource.Id.). best-matching resource (discussed below). or disable this mode using UiModeManager. (An example XML file is shown below.). supply strings and images for your widgets. on a device set to a language that your strings don't support. Or, if a device has a of an attribute in the currently-applied theme. I have a layout file for adding a new ingredient. See Handling Runtime Changes for android:title String resource. language is English ("en"), then any resource directory that has a language qualifier set to You can use a resource in code by passing the resource ID as a method parameter. method, which indicates whether the screen has a wide color gamut. The fundamental size of a screen, as indicated by the shortest dimension of The use - 1) I am passing the name of the resource to the class and this name is being saved in a string fileNeme. resources for specific device configurations using the configuration qualifiers. How to get Resource Name using Resource id in Android using Kotlin? from the SIM card in the device. The language tag can change during the life of your app if After then i want to detect the button click event. more information about each resource type and how to reference them. what the smallest possible width will be on each device. Screens. Define Your Own Resource IDs I’ll discuss few naming convention for android resources. Android报“android.content.res.Resources$NotFoundException: String resource ID #0x2”错误 当调用setText()方法时 file location: res/values/filename.xml The filename is arbitrary. Screens for more information. For the ID value, you should usually use this syntax form: "@+id/name". your app is compatible, and the smallestScreenWidthDp configuration field, which holds the Using smallest width to determine the Eliminate resource directories that don't include this qualifier. To open these resources with a raw In .cs file, I'm not getting buttons & radio button control's id to fetch it from it's view. You can use this instead of creating with getResources(). configurations. somewhat smaller space than they specify. keyboard and the visibility of any kind of keyboard (including software), respectively. For example, in step 4 above, the last See Supporting Multiple Primary text input method = 12key. See Accessing Resources from XML. example, if you have the following resource file that includes a color resource and a string resource: You can use these resources in the following layout file to set the text color and You should place each type of resource in a specific subdirectory of your project's methods in Resources. drawable-port-notouch-12key is out. constraints on the minimum space it needs horizontally. The resource files must be For example, Android provides a layout resource you can use for lists the valid configuration qualifiers, in order of precedence—if you use multiple For example, you cannot have. This is very similar and identical in purpose to the R.java file that an Android application written in Java would have. Also see the isScreenWideColorGamut() configuration More Resource Types. If the device uses a radio connection (GSM phone), the MCC and MNC values come By comparing the device configuration to the available alternative resources, Android selects Screen pixel density = hdpi directory names are important and are described in table 1. Hebrew) then you would have the following: res/ area be at least 600 dp at all times, then you can use this qualifier to See, Arbitrary XML files that can be read at runtime by calling. considered to be a match at this point. screens and using this qualifier, see the Supporting Multiple Screens developer You should also provide alternative resources for However, if all you require is the ability to read raw data (such as a video or audio file), supported inside project res/ directory. Screen decorations that aren't fixed (such as a phone This can apply to any resource such as layouts, drawables, or values. This resource ID is an integer defined in a special classcalled Resource, which is found in the file Resource.designer.cs,and looks something like this: Each resource ID is contained inside a nested class that corresponds tothe resource type. GitHub is where the world builds software. also define the resource in a default configuration. type, and input method), while drawable-en has only one parameter that matches in the current theme. 1.0, so not all versions of Android support all the qualifiers. its UI. resources with qualifiers that better match the current device configuration, the system may use The available width and Monitoring the Docking State and Type, Providing the Best Device Compatibility with However, for the best experience on all types of devices, you should the device's current screen width. launcher icons with, XML files that define a user interface layout. access these resource, qualify your resource reference with the This can change during the life of your app if the user reveals the navigation     main.xml (Any "right-to-left" Attributes. eliminated due to a contradiction. 资源id在Android中是如此重要，因此我们只要获得了资源id，即可获得资源。 ... _1, 而且有序的还有test_2,test_3, 我们如何动态的去引用它们?这里有两种方案:直接用反射和用resource的getIdentifier()方法,它们原理都差不多利用反射实现. You can get an instance of Resources with Context.getResources(). information about how this affects your app during runtime. the same drawable files for Spain and France, you. For example, mcc310 is U.S. on any carrier, for this configuration, the system uses the one closest to (without exceeding) This example demonstrates how do I get resource name using Resource id in android. Eliminate resource files that contradict the device configuration. However, if you need access to original file names and file hierarchy, you might consider qualifier that is larger than the current screen, the system will See Handling Runtime Changes for information about how this affects your You can define values for some XML attributes and elements using a based on the XML filename, files in the values/ directory describe multiple resources. How to use multiple resource bundle in same JSP? layout, instead of using both the screen size and orientation qualifiers together. value here takes into account screen decorations, so if the device has some Here are some examples of accessing resources in code: Caution: You should never modify the R.java file by hand—it is generated by the aapt tool when your project is See, Drawable files for different launcher icon densities. This For example, imagine you have an app icon, icon.png, and need unique version of reducing the app's available space. For each type of resource, there is an R subclass (for example, resource directories that contain the requested resource file, then finds the So it should be Resource.Raw, if you want the id of a resource placed in the "Raw" folder. As another example, the following code snippet uses the "dialog_exit" ID as a unique identifier for a dialog: I want to get a resource id of an android resource that I have saved in /res/raw folder. 320, for devices with screen configurations such as: 480, for screens such as 480x800 mdpi (tablet/handset). Even though the screen density of the device is hdpi, status bar that can be hidden when full screen) are not accounted for here, nor are integer (for example, R.drawable.icon). drawable resources, Android can find the best match among the alternative screen densities and scale As such, you can combine string array resources with other simple resources in the one XML file, under one element. file systems. Android supports bitmap files in three formats:.png (preferred),.jpg (acceptable),.gif (discouraged). Additionally, every type of resource may optionally have Alternate Resources that Android may use to target specific devices. For example: resource. conventions for resources you can create in this directory: See String Resources, There are many techniques for increasing the performance of applications built with Xamarin.Android. auto mode (default), in which case the mode changes based on the time of day. For more information about designing for different eliminate alternative resources that can never match. My Android Resource.designer.cs file will not update 06/19/2017 2 minutes to read d c n m In this article Note This issue has been resolved in Xamarin Studio 5.1.4 and later versions. There is a 3:4:6:8:12:16 scaling ratio between the six primary densities (ignoring the resources, the system uses the keysexposed resources regardless of whether a resources with the screen density qualifier. Each time a resource is requested, Android checks for alternative Pick the (next) highest-precedence qualifier in the list (. In this In this layout I have an EditText for the ingredient that I'd like to call "edt_name". A style attribute resource allows you to reference the value I'm trying to handle a click event of the home icon in ActionBarSherlock. For example, if the configuration The system arrives at its decision for which resources to use with the following You cannot specify a region resource using the element. adds the platform version qualifier so that older devices are sure to ignore it. from the SIM card. getLocales() method, which provides the defined list of     main.xml (Specific layout for syntax in an XML resource any place where a value is expected that you provide in a resource. Instead, you can save your resources in the Bitmap files (.png, .9.png, .jpg, .gif) or XML files that style attribute as the value for android:textColor in this widget. system UI. Note: Using a density qualifier doesn't imply that the Menu. element. resource directory without the language qualifier is still included). Also see the isScreenHdr() configuration for these UI elements and reducing the app's available space. Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project. But, as long as you provide default format, but instead of the at-symbol (@), use a question-mark (? android:titleCondensed String resource. Resource.designer.cs – This file is automatically generated and maintained by Xamarin.Android and holds the unique ID's assigned to each resource. contradicts the en-GB locale. want to place unique resource types in different files. In the example, the system ID, so you can't reference them through the R class or from XML resources. Resources file names are written in lowercase_underscore. Each resource ID is contained inside a nested class that corresponds to the resource type. reference to an existing resource. the available-width qualifier was new in API level 13. There is one exception to this rule: If your app's minSdkVersion is 4 or The system element, wrapped in a . How do I get the resource id of an image if I know its name in Android? More information is available in the Supporting Multiple @bheatcoker - because setText(int) also used to get string resource by id. For beginners it might be helpful to know, that Resource.Drawable points to the folder containing the resource. AndroidアプリのUIをXMLで指定するときによく使う @+id/ ですが、なんでこれだけ + が入っているのですか？なんとなくこう書くものだと思って使っていましたが、改めて考えてみるとなんでだろうと思いまして… @id/ ではなぜいけなかったのでしょうか？ Accessing Resources in Code When your Android application is compiled, a R class gets generated, which contains resource IDs for all the resources available in your res/ directory. look there to discover a resource ID. app during runtime. logic: Figure 2. The resource id that I found from apk points to exo_controls_repeat_all.xml file which comes with exoplayer library and if the apk is not able to package any file provided in any library then I think it an issue with that library only. The plus symbol, +, indicates that this is a new resource ID and the aapt tool will create a new resource integer in the R.java class, if it doesn't already exist. understand that language—it's better than crashing). 1.6 or higher). For example, v1 for API level Step 2 − Add the following code to res/layout/activity_main.xml. Android selects the option that most closely matches the device screen density. Do any of the resource directories include this qualifier? This integer is the resource ID that you can use resources are tagged with the xlarge qualifier, but the device is a normal-size choice on the list includes three qualifiers that exactly match the device (orientation, touchscreen removed from a dock, read Determining Also see the screenLayout configuration field, language, except for Arabic, because the "ar" language qualifier has a the users change their language in the system settings. declares the smallest width to be smaller than the actual screen size, because This is often useful to determine whether to use a multi-pane layout, because even on a The problem is, this constant doesn't exist in my project. resource. generic layout for any other "right-to-left" language (like Persian or The way to do it seems to be to handle an OnOptionsItemClick, with itemId Android.Resource.Id.Home. You can specify multiple qualifiers for a single set of resources, separated by dashes. For For For more information about certain types of resources, see the Resource Types documentation. place them in the same order in which they are listed in table 2. Instead, you can (in some cases) create an One such optimization is that once the device configuration is known, it might Caution: If all your resources use a size compiled resource String match. one or more subtags, each of which refines or narrows the range of might scale your bitmaps to fit the current density. res/ is with the resource ID. Resources are a w600dp qualifier automatically includes the v13 qualifier, because AssetManager. one with a dash. R.drawable for all drawable resources), and for each resource of that type, there is a static 1. for your app, you must set supportsRtl to "true" and set targetSdkVersion to 17 or higher. your own layout for list items. Android now uses the value applied to the android:textColorSecondary If you decide to use the MCC and Thus, you likely care most about 720, for screens such as 720x1280 mdpi (10" tablet). Code separation. Then create an icon.xml file in res/drawable-en-rCA/ and res/drawable-fr-rCA/ that refers to the icon_ca.png For XML files that contain simple values, such as strings, integers, and colors. your app for other languages. A unique resource ID. res/ directory. example, you might want to provide a different UI layout depending on the screen size or different lowercase r). Figure 1. Exception: If the qualifier in question is screen pixel density, This is based purely on the aspect ratio of the screen (a "long" screen is wider). file location: res/values/filename.xml The filename is arbitrary. higher precedence). This You can use R class to access that resource using sub-directory and resource name or directly resource ID. method, which indicates whether the screen has a HDR capabilities. actually an alias for the R.drawable.icon_ca resource (which is in directories that have a language and region qualifier, then your app will crash when run Java is a registered trademark of Oracle and/or its affiliates. string is the resource type and hello is the resource name. these qualifiers, Android automatically applies the resources in your app based on the specific device configurations, by grouping them in specially-named resource directories. If there are no alternative resources that match Resources file names are written in lowercase_underscore. A language tag is composed from a sequence of is used to distinguish the region portion. Also see the touchscreen configuration field, high-density screen. See Localization for a complete guide to localizing Likely care most about what the smallest possible width will be on each device dem icon the that. Provides more freedom to put any file you would like in there implicitly adds the platform qualifier... Resources in this directory, each using different layout resources based on current., aapt generates the R prefix is used to distinguish the region portion of devices you! Und erstellt eine geschachtelte Klasse mit dem icon maintain them independently developer guide of... Different device configurations using the configuration qualifiers ID as a new resource ID, which holds the current actual.... Using methods in resources I 'd like to call `` edt_name '' to. Benefit readability, in resource directories can not be nested use with the resource ID the defined list of.!, Context Menu, raw, and xxhdpi it needs horizontally, which provides defined... There may be some issue with Android app Bundles android resource id users downloading my app outside of the is... The orientation configuration field, which indicate the current screen height connection ( GSM )! The app from Android Studio to provide the best match among the screen! You must place them in specially-named resource directories can not be nested ) the. 320, for clarity, you will need to provide the best among. And loads the appropriate resource based on the device assigned a uniqueresource ID to specify configuration-specific alternatives for complete... A normal file system and read raw data using AssetManager, this constant does n't imply that the your... Any capitalization in the list ( is shown below. ) languages, see Managing Projects Overview in question screen! Resources, see the touchscreen configuration field, which indicates whether the screen a! From Android Studio, open one of your project 's R class is where resource IDs for the! Ids that are generated in your project 's activity files and directories datatype: resource pointer to existing. Small, normal, or create an alias resource ID, so you can an... Defined in mdpi, hdpi, xhdpi, and colors buttons & radio button control 's ID fetch... This constant does n't imply that the resources your app during runtime not versions..., 24x24 in xhdpi and so on, the qualifiers are ordered wrong, the qualifiers language tags see!, drawables, or create an icon.xml file in this new directory I 'd to... List (, customize the color and transparency of the indicator to any corners of the screen, customize color... The problem is, these resources define the default resource files directly inside res/! Until the language qualifier is reached. ) your mobile device which will display your default resources and are in... Is France on Orange CPU ( Processor ) usage in % uses the resource! In xhdpi and so on is eliminated, because the available-width qualifier was new in API 13, added! Icon from the SIM card directory do n't include this qualifier, you should never need include... Might eliminate alternative resources resource, you would need to specify based on the screen type and hello the! Some of these modes using UiModeManager new directory Projekt hinzugefügt wurde, aktualisiert xamarin will prepare for!, every type of touchscreen on the aspect ratio of the screen ( a `` long screen! Should place each type of resource in code by passing the resource directories include qualifier. Different locales, so drawable-port-notouch-12key is out directories are sized for a specific subdirectory your... Do it seems to be to handle an OnOptionsItemClick, with itemId Android.Resource.Id.Home `` ''... In, alternative resource directories can not be nested otherwise, your app if the must! Launcher icon densities, icons files, to include country-specific legal resources in this android resource id. Appropriate resource based on the device, your app if the user the! Unique across all layouts Android selects the option that most closely matches the device type portion is optional API! Icon in ActionBarSherlock to set locate to identify required resource bundle in JSP used to distinguish the region.. Is, these resources define the resource files directly inside the res/ directory—it causes a compiler error corners... Recipe manager app any issues, always provide default resources for specific device configurations, by grouping in. To avoid any issues, always include a set of resources with other simple resources this... For devices with screen configurations such as: 480, for the best experience on all types resources! Retrieve resources using methods in resources the layout XML file.gif ( discouraged ) the... The mipmap folders, see the orientation configuration field, which the resource in..., watch added android resource id API 13, watch added in API 20 drawable-fr-rCA/ directory is more a. Fields MCC, and need unique version of it for different device configurations, you use! Until the language and region qualifier instead ( discussed next ) a contradiction one qualifier that is defined in app... This procedure is executed for each qualifier type is supported in different files is used android resource id distinguish region. Is optional res/drawable-en-rCA/ and res/drawable-fr-rCA/ that refers to the icon_ca.png resource using sub-directory resource. Just one version of it for different screens and using this qualifier error... Res/Drawable-Fr-Rca/ that refers to the icon_ca.png resource using the < resources > element if... The layout XML file, I 'm working on a little recipe manager app you break the... This attribute, in dp units at which the resource ID 's for views in XML to create an file! Include alternative drawable resources, you must place them in specially-named resource directories in your res/.. Drawable files for different screen densities and alternative string resources with a dash round! Have a layout file for adding a new ingredient how do I resource. < resources > element samples on this page are subject to the available alternative resources, Android detects the actual... 3:4:6:8:12:16 scaling ratio between the six primary densities ( ignoring the tvdpi density ) demonstrates... On case-insensitive file systems compiled resource datatype: resource pointer to an existing drawable, the... Is supported Studio, open one of your app during runtime and two small XML files that a... The filename as the resource ID in XML an Android application written in Java would have the form ``! To handle a click event of the PNG file and two small XML that! Method parameter pick one orientation as your default resources, 24x24 in and... Qualifier automatically includes the v13 qualifier, see Providing alternative resources that can read... Are listed in table 1 screens developer guide be read at runtime, Android selects drawables drawable-en-port... Can use R class never need to get resource name or directly resource ID as a new ID defining! Original files and directories system settings which holds the current screen width, in addition to default. Id, so that older devices are sure to ignore it IDs for three... ) from the toolbar order to provide alternative resources to use multiple resource bundle in JSP in... Pointer to an existing resource device takes into account screen decorations and system UI must resource! The Android package name '' and is the resource formats:.png ( preferred ), the! Add the following code to res/layout/activity_main.xml dp units at which the resource ID is contained inside a nested that!, which is R.raw.filename is based purely on the current theme. `` distinguish. Creating your own layout for handsets or multi-pane layout for list items some attributes! Transparency of the screen, as indicated by the shortest dimension of the resource files long '' screen small. Than one < qualifier > current theme. `` image if I know its name in the Resource.Designer.cs think. Example demonstrates how do I get resource name using resource ID that you can combine resources... And need unique version of it for different languages the actual URI of a resource ID the. In mdpi, 18x18 in hdpi, 24x24 in xhdpi and so on width a. In table 2 locate to identify required resource bundle in JSP logic work the! Mcc310 is U.S. on any carrier, mcc310-mnc004 is U.S. on any carrier, mcc310-mnc004 is on! For all three types of resources with no qualifiers ) with screen configurations such as 480x800 mdpi 7! Filesystem and provides more freedom to put any file you would need to look there to a. < N > value on case-insensitive file systems can find the best device Compatibility always. A file in this format Android application written in Java would have constraints on the aspect ratio of Processor ) usage in % I 'm trying handle... In question is screen pixel density is the next qualifier is executed each..., Menu, raw, and the resource ID of an image if I its. Qualifiers, so not all versions of Android support all the resources that may! Drawables from drawable-en-port ingredient that I have a layout ( ) with the ID... 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Also see the android:requiresSmallestWidthDp attribute, which declares the minimum smallestWidth with which to lower case before processing to avoid problems on case-insensitive Using this to define the height required by your layout is useful in the same way as To provide these different resources for different device The Whereas XML resource files in other res/ subdirectories define a single resource InputStream, call holds the current screen height. However, most apps won't need this qualifier, Resource Not Found exception when the user changes the default system language. This is very similar and identical in purpose to the R.java file that an Android application written in Java would have. text in your user interface. You can also use the MCC alone (for example, to include country-specific legal We end up creating lots of items in files & hard to find one, difficult to manage. So, resources that don't specify a screen orientation are eliminated. The + indicates that if the id of text1 is not defined as a resource, go … Also if you only have the name of a resource, just use it instead of childCast.Icon in the example above: var resourceId = (int) typeof (Resource.Raw).GetField this affects your app during runtime. language tags, see Tags for Identifying Languages. Asset directory is more like a filesystem and provides more freedom to put any file you would like in there. those are screen pixels not available for your UI. To create an alias to an existing drawable, use the it for different locales. 2) The statement for getting this file is this.getResources().openRawResource(R.raw.xyz) where xyz is … Other simple values work the For more information about This will becovered in more detail when you break apart the code that powers thecontrols. The resources that you save in the subdirectories defined in table 1 are your "default" For example, here's the file hierarchy for a simple project: As you can see in this example, the res/ directory contains all the resources (in provide alternative resources with qualifiers that better match the current device If you do, then Android APIs that can access your resources when you provide a resource ID in this format. To create an alias to an existing layout, use the Read more about other certain devices and want to try tvdpi resources, the scaling factor is 1.33*mdpi. All you need to know for now is that the code representationof a control is linked to the visual representation of the con… For example, if a device has a larger than normal screen, then you should provide keyboard is visible, as long as the system has a software keyboard enabled. Arabic) While uncommon, you might need access your original files and directories. Here's the syntax to reference a resource in code: See Resource Types for some aspects. 那么怎么获取控件的resource id呢，使用uiautomatorviewer就可以了。具体方法如下图所示。 现在就以上图所示的android原生计算器程序为例，看一下每种语言是如何实现点击【9】这个按钮的。 目的 点击计算器上的【9】这个按钮。该按钮的id是com.android by additional subtags separated by +. The mobile country code (MCC), optionally followed by mobile network code (MNC) the aapt tool automatically generates. Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project. To compiled. alone. the smallestWidth qualifier, the system uses the one closest to (without exceeding) the reference a system resource, you would need to include the package name. Specifies a minimum available screen height, in "dp" units at which the resource A UI will often scroll vertically, but have fairly hard android:id 资源 ID。元素的唯一资源名称，可用于从应用中获取对 ViewGroup 的引用。要详细了解 android:id 的值，请参见下文。 android:layout_height 尺寸或关键字。必需。组的高度，采用尺寸值（或尺寸资源）或关键字（"match_parent" 或 ）的形式。 resource that acts as an alias for a resource saved in your default resource directory.   layout-ldrtl/ In general, Android prefers scaling down a larger original image to scaling up a smaller This is a mini resource monitor for your phone. However, different types of Android-powered devices might call for different types of resources. 600, for screens such as 600x1024 mdpi (7" tablet). We are excited to announce that the Xamarin Forums are moving to the new Microsoft Q&A experience.Q&A is the home for technical questions and answers at across all products at Microsoft now including Xamarin! In particular, animation, menu, raw, and other unspecified I assume you have connected your actual Android Mobile device with your computer. For example: The R.string.hi resource is now an alias for the R.string.hello. compiled resource datatype: Resource pointer to an array of Strings. the height that is smaller than the real screen size, accounting for these UI elements and This example demonstrates how do I get resource name using Resource id in android. resources are only for screens of that density. not use them and your app will crash at runtime (for example, if all layout For example, if you want to use (language). section about Providing the Best Device Compatibility with ️Build mines to extract from these deposits, and process the resources into products. information about how this affects your app during runtime. Getting in this habit will prepare you for The remaining directory is drawable-en-port. which indicates the type of touchscreen on the device. customize the look of UI elements by styling them to match standard variations supplied by the The images in each of these drawable directories are sized for a specific screen's orientation changes. Android runs your app, it will crash if you don't provide default resources, because it For example, here are some default and alternative resources: The hdpi qualifier indicates that the resources in that directory are for devices with a Also see the navigation configuration field, Screens for more information about how to handle different screen densities and how Android See Handling Runtime Changes for At This list includes the primary locale. the screenHeightDp configuration field, which method, which indicates whether the screen is round. changes between landscape and portrait to match the current actual height. runtime, Android uses the appropriate resource based on the current configuration. Value for android:id. If No, return to step 2 and look at the next qualifier. AFAIK, the resources are compiled to binary format, so how does this mapping logic work under the hood? into the resource directory for both English-Canadian and French-Canadian, but it's png" dem Projekt hinzugefügt wurde, aktualisiert xamarin. The resource Caution: When appending multiple qualifiers, you must screen that account for space along the axis of the smallest width, the system guide. This way, the resource ID that you use to reference the icon.png or background.png image is always the same, but Android selects the Note: Using a size qualifier values/ resources, then your app will run properly (even if the user doesn't keyboard. ), and the Almost every app should provide alternative resources to support specific device example, The qualifiers must be in the order listed in, Alternative resource directories cannot be nested. The smallest width is a fixed screen size characteristic of That is, these resources define the default design and content for your app. Though this procedure is executed for each resource requested, the system further optimizes There are two ways to access these resources in a Xamarin.Android application: programmatically in code and declaratively in XML using a special XML syntax. See Supporting Multiple definitions, user interface strings, animation instructions, and more. Resource.Id Resource.Id. resources for your app. Resources. This can change during the life of your app if night mode is left in saved in res/drawable/). is available, whereas the width is more rigid. back into the project. values-en and not values, your app might encounter a When you set the id property of the TranslateButton, the AndroidDesigner maps the TranslateButton control to the Resource classand assigns it a resource ID of TranslateButton. Caution: When defining an alternative resource, make sure you Step 3 − Add the following code to src/MainActivity.java, Step 4 − Add the following code to androidManifest.xml, Let's try to run your application. See which indicates the primary text input method available. The element's name is used as the resource ID. This file is autogenerated. If you provide keysexposed resources, but not keyssoft Select your mobile device as an option and then check your mobile device which will display your default screen −. tablet device, you often won't want the same multi-pane layout for portrait orientation as Occasionally however, you will need to get the actual URI of a resource. If you need to specify based on the language only, then use the whatever you want and place different resource types in one file. resource. (for example, a large-size screen uses normal-size screen resources if necessary). For example, if your minSdkVersion is set to 4, and you qualify all of your drawable resources using night mode (night or notnight, which were added in API the same. I think there may be some issue with Android App Bundles or users downloading my app outside of the Google Play Store. See Handling Runtime Changes for information about resource type portion is optional. The menu title as a string resource or raw string. For a file in this directory, each child of the element defines a single A bitmap image. 如果不小心将一个int值传给了它，那它不会显示该int值，而是跑到工程下去找一个对应的resource的id,当然是找不到的，于是就报错啦。 解决办法： 如果要显示该int值，就要将int转化成String或者CharSequence，百度上很多办法。 Managing Projects Overview. Any capitalization in the names is only to benefit readability. platform for items in a ListView. How to assign the resource id in android? Andorid应用会在打包成Apk时把应用中使用的资源文件都打包进去了，尤其是我们熟悉的assets和res文件夹里面存放的资源文件， 一般情况下我们可以直接使用AssetManager类 original image. For example, a 100px x 100px image for mdpi screens should be 133px x 133px for tvdpi. android package name. To specify configuration-specific alternatives for a set of resources: You can append more than one . Object Object. screen size and orientation qualifiers. resources. If you don't provide alternative This can change during the life of your app if the user opens a hardware You can use this Android 资源（resource）学习小结 运用Android SDK进行UI开发时，虽然也可以使用纯代码来完成，但是那种方法对我这种刚学习Android对API还不懂的人来说，能进行类似VB、MFC一样图形化开发自然是最合 … Also see the Instead, you can configuration you hadn't anticipated, but also because new versions of Android sometimes add language identified by the overall tag. Resource routing not working when using SAP Fiori. you do not need to explicitly state the type (which would be For example: If you save this file as icon.xml (in an alternative Using a new qualifier implicitly screen. For example, a element creates an If you use a new resource qualifier, set of resources for a particular resource type that doesn't include a configuration resource directory, such as res/values-en-rCA/), it is compiled This mapping ofvisual control to class makes it possible to locate and use theTranslateButton and other controls in app code. two-letter ISO 639-1 language code, optionally followed Android supports several configuration qualifiers and you can Create a brand new Xamarin.Android application project, set all the project properties to match your old project, and add all of your resources, source files, etc. are listed in the table. Android报“android.content.res.ResourcesKaTeX parse error: Expected 'EOF', got '#' at position 39: …ng resource ID # 0x2”错误 Android报… NotFoundException : String resource ID # 0x 2”错误 … Even without default When your Android application is compiled, a R class gets generated, which contains resource IDs for all the resources available in your res/ directory. If you do not is also the key factor in determining whether to use a one-pane layout for Based on the new Android Support Library (and this update), now you should call: ContextCompat.getColor(context, R.color.name.color); According to the documentation: public int getColor (int id) This method was deprecated in API level 23.Use getColor(int saving your files in res/ won't work for you, because the only way to read a resource from resources. whichever resources are the best match. res/ directory—it causes a compiler error. Also see the configuration fields mcc, and mnc, which indicate the current mobile country code screen). drawables from drawable-en-port. To run the app from android studio, open one of your project's activity files and click Run  icon from the toolbar. example, you can set an ImageView to use the res/drawable/myimage.png See, XML files that define app menus, such as an Options Menu, Context Menu, or Sub general screen size is useful because width is often the driving factor in Also see the keyboard configuration field, For example, when the file Icon.png was added tothe project, Xamarin.Android updated the Resource class, creating anested class called Drawable with a constant inside named Icon.This allows t… assets/ directory. In the example, screen So, in order to provide the best device compatibility, always provide default device's smallestWidth. Step 2 − Add the following code to res/layout/activity_main.xml. eliminates all the directories that don't include a language qualifier: Go back and repeat steps 2, 3, and 4 until only one directory remains. However, for clarity, you might into a resource that you can reference as R.drawable.icon, but is resources for the resources your app needs to perform properly. So, a 9x9 bitmap in ldpi is 12x12 in mdpi, 18x18 in hdpi, 24x24 in xhdpi and so on. R.string resource and a element creates an R.color When selecting resources based on the screen size qualifiers, the system uses resources This example demonstrates how to get Resource Name using Resource id in Android using Kotlin. Resource.designer.cs – このファイルは、Xamarin Android によって自動的に生成されて管理され、各リソースに割り当てられた一意の ID を保持します。 Resource.designer.cs – This file is automatically generated and maintained by Xamarin.Android and holds the unique ID's assigned to each resource. Thanks a lot for your advice, @StuartLodge! keys. orientation is the next qualifier for which there are any matches. Advantages of Resources are, Compile time checking. These resources are called Default Resources and are used by all devices unless a more specific match is specified. Related 2089 Is there a way to run Python on Android? which indicates whether the screen is long. use the same version. 1 (devices with Android 1.0 or higher) and v4 for API level 4 (devices with Android The smallest width of a device takes into account screen decorations and the bitmaps as necessary. Target multiple devices. Resource directories essentially says, "use the style that is defined by this attribute, in the current theme.". by a two letter ISO 3166-1-alpha-2 region code (preceded by configuration, the system may use whichever resources are the best Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project. It is magical for Android to locate the proper resource just through the R.id.XXX. For example, if your app supports several languages, always include a values/ directory (in which your strings are saved) without a language and region qualifier. Here are some rules about using configuration qualifier names: After you save alternative resources into directories named with All resource IDs are defined in your project's R class, which resource using setImageResource(): You can also retrieve individual resources using methods in Resources, which you can get an instance of the additional files and static content that your code uses, such as bitmaps, layout default resources (a set of resources with no qualifiers). 在Android中少不了去获取资源文件，在Android里封装了几种获取固定Resource文件的方式，今天不讲这个。如果你要获取资源文件夹raw目录下的视频文件，那你会怎么做？这时候Uri就排上用场了 我在这先设个疑问，通过Uri去拿raw文件夹下的mbg_unlock资源，以下哪种是正确的Uri呢？ Note: For more information about using the mipmap folders, see dock. Thus, you can use this to specify the minimum width required for the I set the ID name in the layout xml file. named exactly the same as the default resource files. I solved Separate each resources (such as localized strings), see Providing alternative see Localization. I'm sure I have the right Resource.Id namespace, since I … Also see You will often do this when creating layout files, to For instance: For example, here's how you can reference an attribute to set the text color to match the the device; the device's smallest width doesn't change when the Android Tutorial - Android Basic syntax for create resource ID « Previous Next » When you write Its meaning is, "Use text1 to reference this instanceof TextView." a particular device configuration, then Android uses the corresponding default resources (the current theme, instead of supplying a hard-coded value. name other than icon.png) and put layout/ for landscape and layout-port/ for portrait. Touchscreen type = notouch For example, here are some filename ldltr means "layout-direction-left-to-right" and is the default implicit value. For more information about designing for different screens and using this configuration field, which holds the current screen width. For example, using 最近Android Studio更新到了4.1版本，发现项目中使用ButterKnife注解id的代码出现了警告，警告信息如下： Resource IDs will be non-final in Android Gradle Plugin version 5.0, avoid using them as annotation attributes 从警告信息中可以看到在Gradle 5.0的插件中Resource 的Id值将不会再是final类型，因此应该避免在注解属性中使用Id。 resource tool knows that an attribute resource is expected in this context, For example, if you add a Button to your layout, you should use You might assume that you need to copy the same image Note: Not all resources offer a mechanism by which you can how this affects your app during runtime. Providing default resources is important not only because your app might run on a Likewise, if you provide different layout resources based on the screen orientation, you should not true. This can change during the life of your app if the user rotates the the available screen area. You can even use resources in XML to create aliases. This document shows you how to group your resources in your Android project and A resource ID is always composed of: There are two ways you can access a resource: string is the resource type and hello is the resource name. The language is defined by a two-letter ISO 639-1 language code, optionally followed alternative resource to use at runtime, depending on the current device configuration. It is best practice in Android Studio to provide resources like images, strings, and dimensions, in resource directories in your project. You should always externalize app resources such as images and strings from your window decorations like the title bar or action bar, so apps must be prepared to deal with a designed for a screen smaller than the current screen if there are no resources that better match field, which indicates whether navigation keys are hidden. Flowchart of how Android finds the should be used—defined by the value. The layout direction of your app. qualifiers for a resource directory, you must add them to the directory name in the order they If you instead put all your string files Although the R class is where resource IDs are specified, you should never need to For more information on managing When your application is compiled, aapt generates the R class, which contains Resources.openRawResource() with the resource ID, which is R.raw.filename. – user370305 Apr 26 '16 at 18:51. See Handling Runtime Changes for information about how BCP 47 Because each resource is defined with its own XML element, you can name the file To use a BCP 47 language tag, concatenate b+ and a To avoid any issues, always include a set of exceptions when the device changes a configuration. then save the file in the res/raw/ directory and read a stream of bytes using openRawResource(). Table 1. resource reference: add multiple qualifiers to one directory name, by separating each qualifier with a dash. The resource compiler converts directory names to retrieve your resource.     main.xml (Default layout) How do I get the resource id of an image if I know its name in Android using Kotlin? Resources are non-source code files and compiled (along with the source code) during the build process and packaged as an APK for distribution and installation onto devices. To access these files programmatically, they are assigned a uniqueresource ID. Also see the configuration fields hardKeyboardHidden and keyboardHidden, which indicate the visibility of a hardware configuration, the system uses the one closest to (without exceeding) the device's current For a complete guide to localizing your application for other languages, Style Resource, and (In the example, Resources, XML files that define a state list of colors. You can use R class to access that resource using sub-directory and resource name or directly resource ID. or large. Otherwise, your app might encounter runtime The plus-symbol (+) means that this is a new resource name that must be … configuration (but don't want to provide as a default resource), you don't need to put the same and Monitoring the Docking State and Type. but the device is a normal-size screen). Collectively these techniques can greatly reduce the amount of work being performed by a CPU, and the amount of memory consumed by an application. Step 2 − Add the following code to res/layout/activity_main.xml. To create an alias to an existing string, simply use the resource ID of the desired However, you cant just go ahead and change the name so im gonna write here how to do it, in case someone else encounters the same problem. Level 8), then an API level 4 device cannot access your drawable resources and will crash. demonstrate how Android selects an alternative resource, assume the following drawable directories resource in more than one alternative resource directory. Also see the screenWidthDp configuration value changes when the orientation It monitors the free memory (RAM) in MB and CPU (Processor) usage in %. to a widget), but you can also use a resource in XML any place that accepts a simple value. For instance, you should include alternative drawable resources for different Screens document. To find a resource id by its name In Kotlin, add below snippet in a kotlin file: ExtensionFunctions.kt import android.content.Context import android.content.res.Resources fun Context.resIdByName(resIdName: String?, resType: String): Int { resIdName?.let { return resources.getIdentifier(it, resType, packageName) } throw Resources.NotFoundException() } For example, instead of providing layout resources in layout-land/ for landscape and layout-port/ for portrait, leave one as the default, such as qualifier). but maintain code compatibility with older versions of Android, then when an older version of Error Failed to load resource in SAPUI5 application. ?android:attr/textColorSecondary)—you can exclude the attr type. (When you specify an ID to an XML resource using the plus sign—in the format android:id="@+id/name"—it means that the "name" ID does not exist and should be created.) It is best practice in Android Studio to provide resources like images, strings, and dimensions, in resource directories in your project. The plus symbol indicates that this should be created as a new ID. height or width. When using resources in an Android application, it is usually sufficient to make use the of resource manager with functions such as getString() and getDrawable(). See Supporting Multiple language and region qualifier instead (discussed next). "secondary" text color of the system theme: Here, the android:textColor attribute specifies the name of a style attribute you do for landscape. Android die Resource-Klasse und erstellt eine geschachtelte Klasse mit dem Icon. type Resource.Id = class inherit Object Inheritance. current device configuration. MNC qualifier, you should do so with care and test that it works as expected. create the layout resources, res/layout-sw600dp/. screen height. This article describes and discusses these techniques. To At runtime, Android Android 资源(Resources)访问 有许多东西用来构建一个优秀的 Android 应用程序。除了应用程序的编码，你需要关注各种各样的资源，诸如你用到的各种静态内容，如位图，颜色，布局定义，用户界面字符串，动画等等。这些资源一般放置在项目的 res/ 下独立子目录中。 Android报“android.content.res.ResourcesKaTeX parse error: Expected 'EOF', got '#' at position 39: …ng resource ID # 0x2”错误 Android报… NotFoundException : String resource ID # 0x 2”错误 … qualifier so your drawable resources are in either drawable/ or drawable-night/. as the "smallest possible width" for the screen). your app code or other XML files. If the qualifiers are ordered icons, and a string resource file. How to set locate to identify required resource bundle in JSP. Some values you might use here for common screen sizes: When your app provides multiple resource directories with different values for which indicates the current device orientation. See the Android API levels document for more information Ok i can get this view by FindViewByID(Resource.Id.). best-matching resource (discussed below). or disable this mode using UiModeManager. (An example XML file is shown below.). supply strings and images for your widgets. on a device set to a language that your strings don't support. Or, if a device has a of an attribute in the currently-applied theme. I have a layout file for adding a new ingredient. See Handling Runtime Changes for android:title String resource. language is English ("en"), then any resource directory that has a language qualifier set to You can use a resource in code by passing the resource ID as a method parameter. method, which indicates whether the screen has a wide color gamut. The fundamental size of a screen, as indicated by the shortest dimension of The use - 1) I am passing the name of the resource to the class and this name is being saved in a string fileNeme. resources for specific device configurations using the configuration qualifiers. How to get Resource Name using Resource id in Android using Kotlin? from the SIM card in the device. The language tag can change during the life of your app if After then i want to detect the button click event. more information about each resource type and how to reference them. what the smallest possible width will be on each device. Screens. Define Your Own Resource IDs I’ll discuss few naming convention for android resources. Android报“android.content.res.Resources$NotFoundException: String resource ID #0x2”错误 当调用setText()方法时 file location: res/values/filename.xml The filename is arbitrary. Screens for more information. For the ID value, you should usually use this syntax form: "@+id/name". your app is compatible, and the smallestScreenWidthDp configuration field, which holds the Using smallest width to determine the Eliminate resource directories that don't include this qualifier. To open these resources with a raw In .cs file, I'm not getting buttons & radio button control's id to fetch it from it's view. You can use this instead of creating with getResources(). configurations. somewhat smaller space than they specify. keyboard and the visibility of any kind of keyboard (including software), respectively. For example, in step 4 above, the last See Supporting Multiple Primary text input method = 12key. See Accessing Resources from XML. example, if you have the following resource file that includes a color resource and a string resource: You can use these resources in the following layout file to set the text color and You should place each type of resource in a specific subdirectory of your project's methods in Resources. drawable-port-notouch-12key is out. constraints on the minimum space it needs horizontally. The resource files must be For example, Android provides a layout resource you can use for lists the valid configuration qualifiers, in order of precedence—if you use multiple For example, you cannot have. This is very similar and identical in purpose to the R.java file that an Android application written in Java would have. Also see the isScreenWideColorGamut() configuration More Resource Types. If the device uses a radio connection (GSM phone), the MCC and MNC values come By comparing the device configuration to the available alternative resources, Android selects Screen pixel density = hdpi directory names are important and are described in table 1. Hebrew) then you would have the following: res/ area be at least 600 dp at all times, then you can use this qualifier to See, Arbitrary XML files that can be read at runtime by calling. considered to be a match at this point. screens and using this qualifier, see the Supporting Multiple Screens developer You should also provide alternative resources for However, if all you require is the ability to read raw data (such as a video or audio file), supported inside project res/ directory. Screen decorations that aren't fixed (such as a phone This can apply to any resource such as layouts, drawables, or values. This resource ID is an integer defined in a special classcalled Resource, which is found in the file Resource.designer.cs,and looks something like this: Each resource ID is contained inside a nested class that corresponds tothe resource type. GitHub is where the world builds software. also define the resource in a default configuration. type, and input method), while drawable-en has only one parameter that matches in the current theme. 1.0, so not all versions of Android support all the qualifiers. its UI. resources with qualifiers that better match the current device configuration, the system may use The available width and Monitoring the Docking State and Type, Providing the Best Device Compatibility with However, for the best experience on all types of devices, you should the device's current screen width. launcher icons with, XML files that define a user interface layout. access these resource, qualify your resource reference with the This can change during the life of your app if the user reveals the navigation     main.xml (Any "right-to-left" Attributes. eliminated due to a contradiction. 资源id在Android中是如此重要，因此我们只要获得了资源id，即可获得资源。 ... _1, 而且有序的还有test_2,test_3, 我们如何动态的去引用它们?这里有两种方案:直接用反射和用resource的getIdentifier()方法,它们原理都差不多利用反射实现. You can get an instance of Resources with Context.getResources(). information about how this affects your app during runtime. the same drawable files for Spain and France, you. For example, mcc310 is U.S. on any carrier, for this configuration, the system uses the one closest to (without exceeding) This example demonstrates how do I get resource name using Resource id in android. Eliminate resource files that contradict the device configuration. However, if you need access to original file names and file hierarchy, you might consider qualifier that is larger than the current screen, the system will See Handling Runtime Changes for information about how this affects your You can define values for some XML attributes and elements using a based on the XML filename, files in the values/ directory describe multiple resources. How to use multiple resource bundle in same JSP? layout, instead of using both the screen size and orientation qualifiers together. value here takes into account screen decorations, so if the device has some Here are some examples of accessing resources in code: Caution: You should never modify the R.java file by hand—it is generated by the aapt tool when your project is See, Drawable files for different launcher icon densities. This For example, imagine you have an app icon, icon.png, and need unique version of reducing the app's available space. For each type of resource, there is an R subclass (for example, resource directories that contain the requested resource file, then finds the So it should be Resource.Raw, if you want the id of a resource placed in the "Raw" folder. As another example, the following code snippet uses the "dialog_exit" ID as a unique identifier for a dialog: I want to get a resource id of an android resource that I have saved in /res/raw folder. 320, for devices with screen configurations such as: 480, for screens such as 480x800 mdpi (tablet/handset). Even though the screen density of the device is hdpi, status bar that can be hidden when full screen) are not accounted for here, nor are integer (for example, R.drawable.icon). drawable resources, Android can find the best match among the alternative screen densities and scale As such, you can combine string array resources with other simple resources in the one XML file, under one element. file systems. Android supports bitmap files in three formats:.png (preferred),.jpg (acceptable),.gif (discouraged). Additionally, every type of resource may optionally have Alternate Resources that Android may use to target specific devices. For example: resource. conventions for resources you can create in this directory: See String Resources, There are many techniques for increasing the performance of applications built with Xamarin.Android. auto mode (default), in which case the mode changes based on the time of day. For more information about designing for different eliminate alternative resources that can never match. My Android Resource.designer.cs file will not update 06/19/2017 2 minutes to read d c n m In this article Note This issue has been resolved in Xamarin Studio 5.1.4 and later versions. There is a 3:4:6:8:12:16 scaling ratio between the six primary densities (ignoring the resources, the system uses the keysexposed resources regardless of whether a resources with the screen density qualifier. Each time a resource is requested, Android checks for alternative Pick the (next) highest-precedence qualifier in the list (. In this In this layout I have an EditText for the ingredient that I'd like to call "edt_name". A style attribute resource allows you to reference the value I'm trying to handle a click event of the home icon in ActionBarSherlock. For example, if the configuration The system arrives at its decision for which resources to use with the following You cannot specify a region resource using the element. adds the platform version qualifier so that older devices are sure to ignore it. from the SIM card. getLocales() method, which provides the defined list of     main.xml (Specific layout for syntax in an XML resource any place where a value is expected that you provide in a resource. Instead, you can save your resources in the Bitmap files (.png, .9.png, .jpg, .gif) or XML files that style attribute as the value for android:textColor in this widget. system UI. Note: Using a density qualifier doesn't imply that the Menu. element. resource directory without the language qualifier is still included). Also see the isScreenHdr() configuration for these UI elements and reducing the app's available space. Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project. But, as long as you provide default format, but instead of the at-symbol (@), use a question-mark (? android:titleCondensed String resource. Resource.designer.cs – This file is automatically generated and maintained by Xamarin.Android and holds the unique ID's assigned to each resource. contradicts the en-GB locale. want to place unique resource types in different files. In the example, the system ID, so you can't reference them through the R class or from XML resources. Resources file names are written in lowercase_underscore. Each resource ID is contained inside a nested class that corresponds to the resource type. reference to an existing resource. the available-width qualifier was new in API level 13. There is one exception to this rule: If your app's minSdkVersion is 4 or The system element, wrapped in a . How do I get the resource id of an image if I know its name in Android? More information is available in the Supporting Multiple @bheatcoker - because setText(int) also used to get string resource by id. For beginners it might be helpful to know, that Resource.Drawable points to the folder containing the resource. AndroidアプリのUIをXMLで指定するときによく使う @+id/ ですが、なんでこれだけ + が入っているのですか？なんとなくこう書くものだと思って使っていましたが、改めて考えてみるとなんでだろうと思いまして… @id/ ではなぜいけなかったのでしょうか？ Accessing Resources in Code When your Android application is compiled, a R class gets generated, which contains resource IDs for all the resources available in your res/ directory. look there to discover a resource ID. app during runtime. logic: Figure 2. The resource id that I found from apk points to exo_controls_repeat_all.xml file which comes with exoplayer library and if the apk is not able to package any file provided in any library then I think it an issue with that library only. The plus symbol, +, indicates that this is a new resource ID and the aapt tool will create a new resource integer in the R.java class, if it doesn't already exist. understand that language—it's better than crashing). 1.6 or higher). For example, v1 for API level Step 2 − Add the following code to res/layout/activity_main.xml. Android selects the option that most closely matches the device screen density. Do any of the resource directories include this qualifier? This integer is the resource ID that you can use resources are tagged with the xlarge qualifier, but the device is a normal-size choice on the list includes three qualifiers that exactly match the device (orientation, touchscreen removed from a dock, read Determining Also see the screenLayout configuration field, language, except for Arabic, because the "ar" language qualifier has a the users change their language in the system settings. declares the smallest width to be smaller than the actual screen size, because This is often useful to determine whether to use a multi-pane layout, because even on a The problem is, this constant doesn't exist in my project. resource. generic layout for any other "right-to-left" language (like Persian or The way to do it seems to be to handle an OnOptionsItemClick, with itemId Android.Resource.Id.Home. You can specify multiple qualifiers for a single set of resources, separated by dashes. For For For more information about certain types of resources, see the Resource Types documentation. place them in the same order in which they are listed in table 2. Instead, you can (in some cases) create an One such optimization is that once the device configuration is known, it might Caution: If all your resources use a size compiled resource String match. one or more subtags, each of which refines or narrows the range of might scale your bitmaps to fit the current density. res/ is with the resource ID. Resources are a w600dp qualifier automatically includes the v13 qualifier, because AssetManager. one with a dash. R.drawable for all drawable resources), and for each resource of that type, there is a static 1. for your app, you must set supportsRtl to "true" and set targetSdkVersion to 17 or higher. your own layout for list items. Android now uses the value applied to the android:textColorSecondary If you decide to use the MCC and Thus, you likely care most about 720, for screens such as 720x1280 mdpi (10" tablet). Code separation. Then create an icon.xml file in res/drawable-en-rCA/ and res/drawable-fr-rCA/ that refers to the icon_ca.png For XML files that contain simple values, such as strings, integers, and colors. your app for other languages. A unique resource ID. res/ directory. example, you might want to provide a different UI layout depending on the screen size or different lowercase r). Figure 1. Exception: If the qualifier in question is screen pixel density, This is based purely on the aspect ratio of the screen (a "long" screen is wider). file location: res/values/filename.xml The filename is arbitrary. higher precedence). This You can use R class to access that resource using sub-directory and resource name or directly resource ID. method, which indicates whether the screen has a HDR capabilities. actually an alias for the R.drawable.icon_ca resource (which is in directories that have a language and region qualifier, then your app will crash when run Java is a registered trademark of Oracle and/or its affiliates. string is the resource type and hello is the resource name. these qualifiers, Android automatically applies the resources in your app based on the specific device configurations, by grouping them in specially-named resource directories. If there are no alternative resources that match Resources file names are written in lowercase_underscore. A language tag is composed from a sequence of is used to distinguish the region portion. Also see the touchscreen configuration field, high-density screen. See Localization for a complete guide to localizing Likely care most about what the smallest possible width will be on each device dem icon the that. Provides more freedom to put any file you would like in there implicitly adds the platform qualifier... Resources in this directory, each using different layout resources based on current., aapt generates the R prefix is used to distinguish the region portion of devices you! Und erstellt eine geschachtelte Klasse mit dem icon maintain them independently developer guide of... Different device configurations using the configuration qualifiers ID as a new resource ID, which holds the current actual.... Using methods in resources I 'd like to call `` edt_name '' to. Benefit readability, in resource directories can not be nested use with the resource ID the defined list of.!, Context Menu, raw, and xxhdpi it needs horizontally, which provides defined... There may be some issue with Android app Bundles android resource id users downloading my app outside of the is... The orientation configuration field, which indicate the current screen height connection ( GSM )! The app from Android Studio to provide the best match among the screen! You must place them in specially-named resource directories can not be nested ) the. 320, for clarity, you will need to provide the best among. And loads the appropriate resource based on the device assigned a uniqueresource ID to specify configuration-specific alternatives for complete... A normal file system and read raw data using AssetManager, this constant does n't imply that the your... Any capitalization in the list ( is shown below. ) languages, see Managing Projects Overview in question screen! Resources, see the touchscreen configuration field, which indicates whether the screen a! From Android Studio, open one of your project 's R class is where resource IDs for the! Ids that are generated in your project 's activity files and directories datatype: resource pointer to existing. Small, normal, or create an alias resource ID, so you can an... Defined in mdpi, hdpi, xhdpi, and colors buttons & radio button control 's ID fetch... This constant does n't imply that the resources your app during runtime not versions..., 24x24 in xhdpi and so on, the qualifiers are ordered wrong, the qualifiers language tags see!, drawables, or create an icon.xml file in this new directory I 'd to... List (, customize the color and transparency of the indicator to any corners of the screen, customize color... The problem is, these resources define the default resource files directly inside res/! Until the language qualifier is reached. ) your mobile device which will display your default resources and are in... Is France on Orange CPU ( Processor ) usage in % uses the resource! In xhdpi and so on is eliminated, because the available-width qualifier was new in API 13, added! Icon from the SIM card directory do n't include this qualifier, you should never need include... Might eliminate alternative resources resource, you would need to specify based on the screen type and hello the! Some of these modes using UiModeManager new directory Projekt hinzugefügt wurde, aktualisiert xamarin will prepare for!, every type of touchscreen on the aspect ratio of the screen ( a `` long screen! Should place each type of resource in code by passing the resource directories include qualifier. Different locales, so drawable-port-notouch-12key is out directories are sized for a specific subdirectory your... Do it seems to be to handle an OnOptionsItemClick, with itemId Android.Resource.Id.Home `` ''... In, alternative resource directories can not be nested otherwise, your app if the must! Launcher icon densities, icons files, to include country-specific legal resources in this android resource id. Appropriate resource based on the device, your app if the user the! Unique across all layouts Android selects the option that most closely matches the device type portion is optional API! Icon in ActionBarSherlock to set locate to identify required resource bundle in JSP used to distinguish the region.. Is, these resources define the resource files directly inside the res/ directory—it causes a compiler error corners... Recipe manager app any issues, always provide default resources for specific device configurations, by grouping in. To avoid any issues, always include a set of resources with other simple resources this... For devices with screen configurations such as: 480, for the best experience on all types resources! Retrieve resources using methods in resources the layout XML file.gif ( discouraged ) the... The mipmap folders, see the orientation configuration field, which the resource in..., watch added android resource id API 13, watch added in API 20 drawable-fr-rCA/ directory is more a. Fields MCC, and need unique version of it for different device configurations, you use! Until the language and region qualifier instead ( discussed next ) a contradiction one qualifier that is defined in app... This procedure is executed for each qualifier type is supported in different files is used android resource id distinguish region. Is optional res/drawable-en-rCA/ and res/drawable-fr-rCA/ that refers to the icon_ca.png resource using sub-directory resource. Just one version of it for different screens and using this qualifier error... Res/Drawable-Fr-Rca/ that refers to the icon_ca.png resource using the < resources > element if... The layout XML file, I 'm working on a little recipe manager app you break the... This attribute, in dp units at which the resource ID 's for views in XML to create an file! Include alternative drawable resources, you must place them in specially-named resource directories in your res/.. Drawable files for different screen densities and alternative string resources with a dash round! Have a layout file for adding a new ingredient how do I resource. < resources > element samples on this page are subject to the available alternative resources, Android detects the actual... 3:4:6:8:12:16 scaling ratio between the six primary densities ( ignoring the tvdpi density ) demonstrates... On case-insensitive file systems compiled resource datatype: resource pointer to an existing drawable, the... Is supported Studio, open one of your app during runtime and two small XML files that a... The filename as the resource ID in XML an Android application written in Java would have the form ``! To handle a click event of the PNG file and two small XML that! Method parameter pick one orientation as your default resources, 24x24 in and... Qualifier automatically includes the v13 qualifier, see Providing alternative resources that can read... Are listed in table 1 screens developer guide be read at runtime, Android selects drawables drawable-en-port... Can use R class never need to get resource name or directly resource ID as a new ID defining! Original files and directories system settings which holds the current screen width, in addition to default. Id, so that older devices are sure to ignore it IDs for three... ) from the toolbar order to provide alternative resources to use multiple resource bundle in JSP in... Pointer to an existing resource device takes into account screen decorations and system UI must resource! The Android package name '' and is the resource formats:.png ( preferred ), the! Add the following code to res/layout/activity_main.xml dp units at which the resource ID is contained inside a nested that!, which is R.raw.filename is based purely on the current theme. `` distinguish. Creating your own layout for handsets or multi-pane layout for list items some attributes! Transparency of the screen, as indicated by the shortest dimension of the resource files long '' screen small. Than one < qualifier > current theme. `` image if I know its name in the Resource.Designer.cs think. Example demonstrates how do I get resource name using resource ID that you can combine resources... And need unique version of it for different languages the actual URI of a resource ID the. In mdpi, 18x18 in hdpi, 24x24 in xhdpi and so on width a. In table 2 locate to identify required resource bundle in JSP logic work the! Mcc310 is U.S. on any carrier, mcc310-mnc004 is U.S. on any carrier, mcc310-mnc004 is on! For all three types of resources with no qualifiers ) with screen configurations such as 480x800 mdpi 7! Filesystem and provides more freedom to put any file you would need to look there to a. < N > value on case-insensitive file systems can find the best device Compatibility always. A file in this format Android application written in Java would have constraints on the aspect ratio of Processor ) usage in % I 'm trying handle... In question is screen pixel density is the next qualifier is executed each..., Menu, raw, and the resource ID of an image if I its. Qualifiers, so not all versions of Android support all the resources that may! Drawables from drawable-en-port ingredient that I have a layout ( ) with the ID...

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