Flutter 执行任务 ':app:processDebugResources' 失败

Question

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带有最新 Flutter（稳定版 v1.2.1）和 Dart 的新系统，并遇到了这个构建异常问题。

请注意，此项目在我下面的旧桌面 flutter doctor 输出上运行良好

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

指向 pubsec.yaml 的要点链接

由于我很长时间后回来，我不知道 Flutter 经历了哪些变化，有人可以帮我吗

在当前系统上运行的颤振输出

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

Answer 1

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