android.content.res.Resources$NotFoundException:文件res/drawable-v21/#en0#_backound.xml
android.content.res.Resources$NotFoundException:文件res/drawable-v21/#en0#_backound.xml
提问于 2020-12-04 10:07:29
以前，我正在构建和运行一个颤振应用程序罚款。我不记得做过任何更改，但最近，我在通过Android在智能手机上构建和运行应用程序时遇到了这样的错误：
Launching lib\main.dart on SM N900 in debug mode...
Running Gradle task 'assembleDebug'...
E/AndroidRuntime(12731): FATAL EXCEPTION: main
E/AndroidRuntime(12731): Process: io.flutter.demo.gallery, PID: 12731
E/AndroidRuntime(12731): java.lang.RuntimeException: Unable to start activity ComponentInfo{io.flutter.demo.gallery/io.flutter.demo.gallery.MainActivity}: android.content.res.Resources$NotFoundException: File res/drawable-v21/launch_background.xml from drawable resource ID #0x7f040000
E/AndroidRuntime(12731): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2693)
E/AndroidRuntime(12731): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2758)
E/AndroidRuntime(12731): at android.app.ActivityThread.access$900(ActivityThread.java:177)
E/AndroidRuntime(12731): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1448)
E/AndroidRuntime(12731): at android.os.Handler.dispatchMessage(Handler.java:102)
E/AndroidRuntime(12731): at android.os.Looper.loop(Looper.java:145)
E/AndroidRuntime(12731): at android.app.ActivityThread.main(ActivityThread.java:5942)
E/AndroidRuntime(12731): at java.lang.reflect.Method.invoke(Native Method)
E/AndroidRuntime(12731): at java.lang.reflect.Method.invoke(Method.java:372)
E/AndroidRuntime(12731): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1400)
E/AndroidRuntime(12731): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1195)
E/AndroidRuntime(12731): Caused by: android.content.res.Resources$NotFoundException: File res/drawable-v21/launch_background.xml from drawable resource ID #0x7f040000
E/AndroidRuntime(12731): at android.content.res.Resources.loadDrawableForCookie(Resources.java:3752)
E/AndroidRuntime(12731): at android.content.res.Resources.loadDrawable(Resources.java:3620)
E/AndroidRuntime(12731): at android.content.res.Resources.getDrawable(Resources.java:1852)
E/AndroidRuntime(12731): at android.content.res.Resources.getDrawable(Resources.java:1818)
E/AndroidRuntime(12731): at io.flutter.embedding.android.FlutterActivity.getSplashScreenFromManifest(FlutterActivity.java:495)
E/AndroidRuntime(12731): at io.flutter.embedding.android.FlutterActivity.provideSplashScreen(FlutterActivity.java:469)
E/AndroidRuntime(12731): at io.flutter.embedding.android.FlutterActivityAndFragmentDelegate.onCreateView(FlutterActivityAndFragmentDelegate.java:301)
E/AndroidRuntime(12731): at io.flutter.embedding.android.FlutterActivity.createFlutterView(FlutterActivity.java:520)
E/AndroidRuntime(12731): at io.flutter.embedding.android.FlutterActivity.onCreate(FlutterActivity.java:414)
E/AndroidRuntime(12731): at android.app.Activity.performCreate(Activity.java:6283)
E/AndroidRuntime(12731): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1119)
E/AndroidRuntime(12731): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2646)
E/AndroidRuntime(12731): ... 10 more
E/AndroidRuntime(12731): Caused by: org.xmlpull.v1.XmlPullParserException: Binary XML file line #4: <item> tag requires a 'drawable' attribute or child tag defining a drawable
E/AndroidRuntime(12731): at android.graphics.drawable.LayerDrawable.inflateLayers(LayerDrawable.java:202)
E/AndroidRuntime(12731): at android.graphics.drawable.LayerDrawable.inflate(LayerDrawable.java:147)
E/AndroidRuntime(12731): at android.graphics.drawable.Drawable.createFromXmlInner(Drawable.java:1150)
E/AndroidRuntime(12731): at android.graphics.drawable.Drawable.createFromXml(Drawable.java:1063)
E/AndroidRuntime(12731): at android.content.res.Resources.loadDrawableForCookie(Resources.java:3736)
E/AndroidRuntime(12731): ... 21 more颤振医生 flutter doctor -v的输出为：
>flutter doctor -v
[√] Flutter (Channel master, 1.24.0-8.0.pre.1, on Microsoft Windows [Version 10.0.19041.264], locale en-US)
• Flutter version 1.24.0-8.0.pre.1 at C:\Users\m3\repos\flutter
• Framework revision e444b1e3fa (5 weeks ago), 2020-10-30 00:41:52 -0400
• Engine revision 99cc50dfff
• Dart version 2.11.0 (build 2.11.0-266.0.dev)
[√] Android toolchain - develop for Android devices (Android SDK version 30.0.1)
• Android SDK at C:\Users\m3\AppData\Local\Android\sdk
• Platform android-30, build-tools 30.0.1
• Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
• Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b01)
• All Android licenses accepted.
[√] Chrome - develop for the web
• Chrome at C:\Program Files\Google\Chrome\Application\chrome.exe
[√] Android Studio (version 4.0)
• Android Studio at C:\Program Files\Android\Android Studio
• Flutter plugin version 50.0.1
• Dart plugin version 193.7547
• Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b01)
[√] Connected device (3 available)
• SM N900 (mobile) • 4d00b6ae472d80eb • android-arm • Android 5.0 (API 21)
• Web Server (web) • web-server • web-javascript • Flutter Tools
• Chrome (web) • chrome • web-javascript • Google Chrome 87.0.4280.66
• No issues found!我只是简单的结账主支行。打开安卓工作室。通过USB接口将Android智能手机设备与计算机连接。单击“绿色三角”按钮(Android )，使用Android5.0在设备上构建和运行应用程序。在终端上抛出错误。我在Windows 10上。
Note这样的帖子显示，可能需要对Gradle构建系统进行不同的配置，但不确定如何配置：
https://stackoverflow.com/a/39419701/3405291
更新
Android File > Invalidate Caches / Restart...没有解决这个问题。
更新
使用Android 9 (API 28)构建和运行该应用程序，异常将得到解决，应用程序也很好：
$ flutter doctor -v
[√] Flutter (Channel master, 1.26.0-2.0.pre.401, on Microsoft Windows [Version 10.0.19041.264], locale en-US)
• Flutter version 1.26.0-2.0.pre.401 at C:\Users\m3\repos\flutter
• Framework revision da5a454d5c (11 hours ago), 2021-01-17 01:24:03 -0500
• Engine revision 609036f2bf
• Dart version 2.12.0 (build 2.12.0-236.0.dev)
[√] Android toolchain - develop for Android devices (Android SDK version 30.0.1)
• Android SDK at C:\Users\m3\AppData\Local\Android\sdk
• Platform android-30, build-tools 30.0.1
• Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
• Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b01)
• All Android licenses accepted.
[√] Chrome - develop for the web
• Chrome at C:\Program Files\Google\Chrome\Application\chrome.exe
[√] Android Studio (version 4.0)
• Android Studio at C:\Program Files\Android\Android Studio
• Flutter plugin version 50.0.1
• Dart plugin version 193.7547
• Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b01)
[√] Connected device (2 available)
• SM A105F (mobile) • RF8M60PVD5F • android-arm • Android 9 (API 28)
• Chrome (web) • chrome • web-javascript • Google Chrome 87.0.4280.88
• No issues found!更新
到目前为止，这意味着该应用程序在Android9 (API 28)中运行良好，但在Android5.0 (API 21)中抛出了上述异常。有人知道问题的起因吗？我怎么可能在Android5.0 (API 21)上运行这个应用程序呢？
更新
这是相关的：
https://github.com/flutter/gallery/issues/383
更新
此外，这也是相关的：
回答 4
Stack Overflow用户
回答已采纳
发布于 2021-01-24 03:36:08
在文件android/app/src/main/AndroidManifest.xml中，通过注释掉以下内容来解决异常：
<meta-data
android:name="io.flutter.embedding.android.SplashScreenDrawable"
android:resource="@drawable/launch_background" />删除上面的内容可以解决异常，但我不确定它是否有任何副作用。
Stack Overflow用户
发布于 2021-04-16 08:06:15
在文件android\app\src\main\res\drawable-v21\launch_background.xml，中，可以通过替换
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="?android:colorBackground" />通过
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="@android:color/white" />Stack Overflow用户
发布于 2021-04-12 14:33:49
原来的答案在这里找到：Splash screen error: android.content.res.Resources$NotFoundException: Drawable
此问题在大多数情况下都会在包含来自可绘制目录之外的图像时发生。例如：
<item>
<bitmap
android:gravity="center"
android:src="@mipmap/image" />
</item>只需使用可绘制的图像，您就可以消除错误。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/65141598
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