title: Flutter Execution failed for task ':app:processDebugResources'
body: <p>I left my flutter project for a while when Flutter beta v1.0.0 was out. Now I moved my project to a new system with latest Flutter (stable v1.2.1) and Dart and ran into this build exception problem.</p>
  
  <p>Note this project is working fine on my old desktop
  flutter doctor output below</p>
  
  <pre><code>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)
  </code></pre>
  
  <p>flutter doctor output of new/current system</p>
  
  <pre><code>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)
  </code></pre>
  
  <p>pubsec.yaml</p>
  
  <p><a href="https://gist.github.com/purplecandy/b20eda67346de40fe58acb58dbb315f5#file-pubsec-ymal" rel="noreferrer" title="gist link pubsec.ymal">gist link to pubsec.yaml</a></p>
  
  <p>Since I'm coming back after a long time I have no idea what changes Flutter went through can anyone please help me out</p>
  
  <p>Output of flutter run on current system</p>
  
  <pre><code>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'.
  &gt; 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&gt; 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'.
  &gt; 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
  </code></pre>