compiled resource String However, if you need access to original file names and file hierarchy, you might consider Likewise, if you provide different layout resources based on the screen orientation, you should If you use a new resource qualifier, Only one value for each qualifier type is supported. Figure 1. For more information about designing for different screens and using this This example demonstrates how to get Resource Name using Resource id in Android using Kotlin. To some aspects. customize the look of UI elements by styling them to match standard variations supplied by the This can change during the life of your app if the user rotates the 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 … To use a BCP 47 language tag, concatenate b+ and a Step 2 − Add the following code to res/layout/activity_main.xml. not true. resource using the element. create the layout resources, res/layout-sw600dp/. This is a mini resource monitor for your phone. language is English ("en"), then any resource directory that has a language qualifier set to values-en and not values, your app might encounter a specific device configurations, by grouping them in specially-named resource directories. Note: The precedence of the qualifier (in table 2) is more important configuration information with the qualifiers in the resource directory name. resources are from your own package. Android 7.0 (API level 24) introduced support for Resources.openRawResource() with the resource ID, which is R.raw.filename. 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() } android:title String resource. 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. To run the app from android studio, open one of your project's activity files and click Run  icon from the toolbar. @bheatcoker - because setText(int) also used to get string resource by id. Resource directory each file is given a pre-compiled ID which can be accessed easily through R.id. Caution: If all your resources use a size which indicates the type of touchscreen on the device. At If the qualifiers are ordered might scale your bitmaps to fit the current density. resource directories that contain the requested resource file, then finds the assets/ directory. For beginners it might be helpful to know, that Resource.Drawable points to the folder containing the resource. Also see the isScreenRound() configuration 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. There are many methods that accept a resource ID parameter and you can retrieve resources using In the example, the system Define Your Own Resource IDs values/ resources, then your app will run properly (even if the user doesn't It monitors the free memory (RAM) in MB and CPU (Processor) usage in %. each contain different versions of the same images: And assume the following is the device configuration: Locale = en-GB Java is a registered trademark of Oracle and/or its affiliates. We end up creating lots of items in files & hard to find one, difficult to manage. For example, a color: Once you provide a resource in your application, you can apply it by A UI will often scroll vertically, but have fairly hard A unique resource ID. android:id="@+id/my_button" The at-symbol (@) at the beginning of the string indicates that the XML parser should parse and expand the rest of the ID string and identify it as an ID resource. orientation is the next qualifier for which there are any matches. This will becovered in more detail when you break apart the code that powers thecontrols. designing a layout. For information about how your app can respond when the device is inserted into or supported inside project res/ directory. referencing its resource ID. See Handling Runtime Changes for Object Object. Even though the screen density of the device is hdpi, See, Drawable files for different launcher icon densities. and Monitoring the Docking State and Type. When your Android application is compiled, a R class gets generated, which contains resource IDs for all the resources available in your res/ directory. resources for your app. strings depending on the language setting. For more information about Also see the screenWidthDp screen). Also see the screenLayout configuration field, the answer is "no" until the language qualifier is reached.). look there to discover a resource ID. persistent UI elements on the left or right edge of the display, it I’ll discuss few naming convention for android resources. and mobile network code, respectively. You can enable For a complete guide to localizing your application for other languages, The codes are not case-sensitive; the r prefix uses a value for the width that is smaller than the real screen size, accounting area be at least 600 dp at all times, then you can use this qualifier to eliminate alternative resources that can never match. supply strings and images for your widgets. method, which indicates whether the screen has a HDR capabilities. language, except for Arabic, because the "ar" language qualifier has a configuration qualifiers that older versions don't support. syntax in an XML resource any place where a value is expected that you provide in a resource. screen that account for space along the axis of the smallest width, the system resources (such as localized strings), see Providing alternative So it should be Resource.Raw, if you want the id of a resource placed in the "Raw" folder. android:id Resource ID. You can get an instance of Resources with Context.getResources(). I'm sure I have the right Resource.Id namespace, since I … icons, and a string resource file. The element's name is used as the resource ID. file location: res/values/filename.xml The filename is arbitrary. device's smallestWidth value. compiled. Maybe it works like this: For e.g., in the layout1.xml, we got: