任务'：app：processDebugResources'的Flutter执行失败答案

【问题标题】：Flutter Execution failed for task ':app:processDebugResources'任务'：app：processDebugResources'的Flutter执行失败
【发布时间】：2019-08-16 01:13:27
【问题描述】：

当 Flutter beta v1.0.0 发布时，我离开了我的 Flutter 项目一段时间。现在我将我的项目移动到一个新的系统，使用最新的 Flutter (stable v1.2.1) 和 Dart，并遇到了这个构建异常问题。

请注意，这个项目在我的旧桌面上运行良好颤振医生输出如下

Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel beta, v1.0.0, on Linux, locale en_GB.UTF-8)
[!] Android toolchain - develop for Android devices (Android SDK 28.0.3)
    ! Some Android licenses not accepted.  To resolve this, run: flutter doctor --android-licenses
[✓] Android Studio (version 3.2)
    ✗ Flutter plugin not installed; this adds Flutter specific functionality.
    ✗ Dart plugin not installed; this adds Dart specific functionality.
[✓] Connected device (1 available)

新/当前系统的颤振医生输出

Doctor summary (to see all details, run flutter doctor -v):
[√] Flutter (Channel stable, v1.2.1, on Microsoft Windows [Version 10.0.17763.379], locale en-IN)
[√] Android toolchain - develop for Android devices (Android SDK version 28.0.3)
[!] Android Studio (version 3.2)
    X Flutter plugin not installed; this adds Flutter specific functionality.
    X Dart plugin not installed; this adds Dart specific functionality.
[√] VS Code (version 1.32.3)
[√] Connected device (1 available)

pubsec.yaml

gist link to pubsec.yaml

由于我很久以后才回来，所以我不知道 Flutter 经历了哪些变化，谁能帮帮我

flutter 在当前系统上运行的输出

Launching lib/main.dart on Android SDK built for x86 in debug mode...
Initializing gradle...                                              1.5s
Resolving dependencies...                                           6.0s

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:processDebugResources'.
> Android resource linking failed
  Output:  D:\Android Projects\maze-flutter\build\app\intermediates\incremental\mergeDebugResources\merged.dir\values-v28\values-v28.xml:7: error: resource android:attr/dialogCornerRadius not found.
  D:\Android Projects\maze-flutter\build\app\intermediates\incremental\mergeDebugResources\merged.dir\values-v28\values-v28.xml:11: error: resource android:attr/dialogCornerRadius not found.
  D:\Android Projects\maze-flutter\build\app\intermediates\incremental\mergeDebugResources\merged.dir\values\values.xml:956: error: resource android:attr/fontVariationSettings not found.
  D:\Android Projects\maze-flutter\build\app\intermediates\incremental\mergeDebugResources\merged.dir\values\values.xml:957: error: resource android:attr/ttcIndex not found.
  error: failed linking references.

  Command: C:\Users\powerpurple\.gradle\caches\transforms-1\files-1.1\aapt2-3.2.1-4818971-windows.jar\18c59619c56cba96590906f3917a302b\aapt2-3.2.1-4818971-windows\aapt2.exe link -I\
          C:\Users\powerpurple\AppData\Local\Android\sdk\platforms\android-27\android.jar\
          --manifest\
          D:\Android Projects\maze-flutter\build\app\intermediates\merged_manifests\debug\processDebugManifest\merged\AndroidManifest.xml\
          -o\
          D:\Android Projects\maze-flutter\build\app\intermediates\processed_res\debug\processDebugResources\out\resources-debug.ap_\
          -R\
          @D:\Android Projects\maze-flutter\build\app\intermediates\incremental\processDebugResources\resources-list-for-resources-debug.ap_.txt\
          --auto-add-overlay\
          --java\
          D:\Android Projects\maze-flutter\build\app\generated\not_namespaced_r_class_sources\debug\processDebugResources\r\
          --custom-package\
          com.example.codee\
          -0\
          apk\
          --output-text-symbols\
          D:\Android Projects\maze-flutter\build\app\intermediates\symbols\debug\R.txt\
          --no-version-vectors
  Daemon:  AAPT2 aapt2-3.2.1-4818971-windows Daemon #0
  Output:  C:\Users\powerpurple\.gradle\caches\transforms-1\files-1.1\appcompat-1.0.0-rc01.aar\353a670f458ae84ffafa8b187ee27491\res\values-v28\values-v28.xml:9:5-12:13: AAPT: error: resource android:attr/dialogCornerRadius not found.

  D:\Android Projects\maze-flutter\build\app\intermediates\incremental\mergeDebugResources\merged.dir\values-v28\values-v28.xml:11: AAPT: error: resource android:attr/dialogCornerRadius not found.

  C:\Users\powerpurple\.gradle\caches\transforms-1\files-1.1\core-1.0.1.aar\f099bdc17ba82cfe6a5a3ab5ab60bee4\res\values\values.xml:89:5-125:25: AAPT: error: resource android:attr/fontVariationSettings not found.

  C:\Users\powerpurple\.gradle\caches\transforms-1\files-1.1\core-1.0.1.aar\f099bdc17ba82cfe6a5a3ab5ab60bee4\res\values\values.xml:89:5-125:25: AAPT: error: resource android:attr/ttcIndex not found.

  error: failed linking references.
  Command: C:\Users\powerpurple\.gradle\caches\transforms-1\files-1.1\aapt2-3.2.1-4818971-windows.jar\18c59619c56cba96590906f3917a302b\aapt2-3.2.1-4818971-windows\aapt2.exe link -I\
          C:\Users\powerpurple\AppData\Local\Android\sdk\platforms\android-27\android.jar\
          --manifest\
          D:\Android Projects\maze-flutter\build\app\intermediates\merged_manifests\debug\processDebugManifest\merged\AndroidManifest.xml\
          -o\
          D:\Android Projects\maze-flutter\build\app\intermediates\processed_res\debug\processDebugResources\out\resources-debug.ap_\
          -R\
          @D:\Android Projects\maze-flutter\build\app\intermediates\incremental\processDebugResources\resources-list-for-resources-debug.ap_.txt\
          --auto-add-overlay\
          --java\
          D:\Android Projects\maze-flutter\build\app\generated\not_namespaced_r_class_sources\debug\processDebugResources\r\
          --custom-package\
          com.example.codee\
          -0\
          apk\
          --output-text-symbols\
          D:\Android Projects\maze-flutter\build\app\intermediates\symbols\debug\R.txt\
PS D:\Android Projects\maze-flutter> flutter run
Using hardware rendering with device Android SDK built for x86. If you get graphics artifacts, consider enabling software rendering with
"--enable-software-rendering".
Launching lib/main.dart on Android SDK built for x86 in debug mode...
Initializing gradle...                                              1.4s
Resolving dependencies...                                           5.7s

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:processDebugResources'.
> Android resource linking failed
  Output:  D:\Android Projects\maze-flutter\build\app\intermediates\incremental\mergeDebugResources\merged.dir\values-v28\values-v28.xml:7: error: resource android:attr/dialogCornerRadius not found.
  D:\Android Projects\maze-flutter\build\app\intermediates\incremental\mergeDebugResources\merged.dir\values-v28\values-v28.xml:11: error: resource android:attr/dialogCornerRadius not found.  D:\Android Projects\maze-flutter\build\app\intermediates\incremental\mergeDebugResources\merged.dir\values\values.xml:956: error: resource android:attr/fontVariationSettings not found.
  D:\Android Projects\maze-flutter\build\app\intermediates\incremental\mergeDebugResources\merged.dir\values\values.xml:957: error: resource android:attr/ttcIndex not found.
  error: failed linking references.

  Command: C:\Users\powerpurple\.gradle\caches\transforms-1\files-1.1\aapt2-3.2.1-4818971-windows.jar\18c59619c56cba96590906f3917a302b\aapt2-3.2.1-4818971-windows\aapt2.exe link -I\
          C:\Users\powerpurple\AppData\Local\Android\sdk\platforms\android-27\android.jar\
          --manifest\
          D:\Android Projects\maze-flutter\build\app\intermediates\merged_manifests\debug\processDebugManifest\merged\AndroidManifest.xml\
          -o\
          D:\Android Projects\maze-flutter\build\app\intermediates\processed_res\debug\processDebugResources\out\resources-debug.ap_\
          -R\
          @D:\Android Projects\maze-flutter\build\app\intermediates\incremental\processDebugResources\resources-list-for-resources-debug.ap_.txt\
          --auto-add-overlay\
          --java\
          D:\Android Projects\maze-flutter\build\app\generated\not_namespaced_r_class_sources\debug\processDebugResources\r\
          --custom-package\
          com.example.codee\
          -0\
          apk\
          --output-text-symbols\
          D:\Android Projects\maze-flutter\build\app\intermediates\symbols\debug\R.txt\
          --no-version-vectors
  Daemon:  AAPT2 aapt2-3.2.1-4818971-windows Daemon #0
  Output:  C:\Users\powerpurple\.gradle\caches\transforms-1\files-1.1\appcompat-1.0.0-rc01.aar\353a670f458ae84ffafa8b187ee27491\res\values-v28\values-v28.xml:9:5-12:13: AAPT: error: resource android:attr/dialogCornerRadius not found.

  D:\Android Projects\maze-flutter\build\app\intermediates\incremental\mergeDebugResources\merged.dir\values-v28\values-v28.xml:11: AAPT: error: resource android:attr/dialogCornerRadius not found.

  C:\Users\powerpurple\.gradle\caches\transforms-1\files-1.1\core-1.0.1.aar\f099bdc17ba82cfe6a5a3ab5ab60bee4\res\values\values.xml:89:5-125:25: AAPT: error: resource android:attr/fontVariationSettings not found.

  C:\Users\powerpurple\.gradle\caches\transforms-1\files-1.1\core-1.0.1.aar\f099bdc17ba82cfe6a5a3ab5ab60bee4\res\values\values.xml:89:5-125:25: AAPT: error: resource android:attr/ttcIndex not found.

  error: failed linking references.
  Command: C:\Users\powerpurple\.gradle\caches\transforms-1\files-1.1\aapt2-3.2.1-4818971-windows.jar\18c59619c56cba96590906f3917a302b\aapt2-3.2.1-4818971-windows\aapt2.exe link -I\
          C:\Users\powerpurple\AppData\Local\Android\sdk\platforms\android-27\android.jar\
          --manifest\
          D:\Android Projects\maze-flutter\build\app\intermediates\merged_manifests\debug\processDebugManifest\merged\AndroidManifest.xml\
          -o\
          D:\Android Projects\maze-flutter\build\app\intermediates\processed_res\debug\processDebugResources\out\resources-debug.ap_\
          -R\
          @D:\Android Projects\maze-flutter\build\app\intermediates\incremental\processDebugResources\resources-list-for-resources-debug.ap_.txt\
          --auto-add-overlay\
          --java\
          D:\Android Projects\maze-flutter\build\app\generated\not_namespaced_r_class_sources\debug\processDebugResources\r\
          --custom-package\
          com.example.codee\
          -0\
          apk\
          --output-text-symbols\
          D:\Android Projects\maze-flutter\build\app\intermediates\symbols\debug\R.txt\
          --no-version-vectors
  Daemon:  AAPT2 aapt2-3.2.1-4818971-windows Daemon #0

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 18s
Running Gradle task 'assembleDebug'...
Running Gradle task 'assembleDebug'... Done                        19.6s
*******************************************************************************************
The Gradle failure may have been because of AndroidX incompatibilities in this Flutter app.
See * for more information on the problem and how to fix it.
*******************************************************************************************
Gradle task assembleDebug failed with exit code 1

【问题讨论】：

您是否使用了任何 Firebase 依赖项？您能否将您的“pubspec.yaml”、依赖项部分添加到您的问题中？
@R.Duggan 不，我没有任何 Firebase 问题。我也更新了问题
@R.Duggan 发现与 firebase 相同的问题。有什么办法解决吗？

标签： dart flutter

【解决方案1】：

compileSdkVersion 更新对我有用！
/AppName/android/app/build.gradle
adnroid compileSdkVersion: 28 到 compileSdkVersion: 30

操作系统：Ubuntu 20.04 LTS
Android 模拟器 API 30
Dart 2.10.2
Flutter 1.22.2

【讨论】：

【解决方案2】：

缺少的资源仅在 API 28 中添加。您需要将 build.gradle 文件中的 compileSDKversion 更新到版本 28。

【讨论】：

你是怎么知道这些的？我真的很好奇。
一个重要提示是它们在“values-v28”（API 28+）中被引用。您可以查看 AOSP 源代码并查看它们的添加位置。
你救了我的命！
谢谢！就我而言，在更改了compiledSdkVersion 之后，我不得不在下一行将GradleException 更改为Exception：throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
你节省了几个小时 :)