FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:processDebugResources'.
> Android resource linking failed
  Output:  D:\GitRepos\dicee-flutter\build\app\intermediates\incremental\mergeDebugResources\merged.dir\values\values.xml:186: error: resource android:attr/fontVariationSettings not found.
  D:\GitRepos\dicee-flutter\build\app\intermediates\incremental\mergeDebugResources\merged.dir\values\values.xml:187: error: resource android:attr/ttcIndex not found.
  error: failed linking references.

  Command: C:\Users\pierr\.gradle\caches\transforms-1\files-1.1\aapt2-3.2.1-4818971-windows.jar\6c67b1f76e068f8f255090d62215eadf\aapt2-3.2.1-4818971-windows\aapt2.exe link -I\
          C:\Users\pierr\AppData\Local\Android\sdk\platforms\android-27\android.jar\
          --manifest\
          D:\GitRepos\dicee-flutter\build\app\intermediates\merged_manifests\debug\processDebugManifest\merged\AndroidManifest.xml\
          -o\
          D:\GitRepos\dicee-flutter\build\app\intermediates\processed_res\debug\processDebugResources\out\resources-debug.ap_\
          -R\
          @D:\GitRepos\dicee-flutter\build\app\intermediates\incremental\processDebugResources\resources-list-for-resources-debug.ap_.txt\
          --auto-add-overlay\
          --java\
          D:\GitRepos\dicee-flutter\build\app\generated\not_namespaced_r_class_sources\debug\processDebugResources\r\
          --custom-package\
          co.appbrewery.dicee\
          -0\
          apk\
          --output-text-symbols\
          D:\GitRepos\dicee-flutter\build\app\intermediates\symbols\debug\R.txt\
          --no-version-vectors
  Daemon:  AAPT2 aapt2-3.2.1-4818971-windows Daemon #0
  Output:  C:\Users\pierr\.gradle\caches\transforms-1\files-1.1\support-compat-28.0.0.aar\806338c10ff58144c55b73f64695bab5\res\values\values.xml:89:5-125:25: AAPT: error: resource android:attr/fontVariationSettings not found.

  C:\Users\pierr\.gradle\caches\transforms-1\files-1.1\support-compat-28.0.0.aar\806338c10ff58144c55b73f64695bab5\res\values\values.xml:89:5-125:25: AAPT: error: resource android:attr/ttcIndex not found.

  error: failed linking references.
  Command: C:\Users\pierr\.gradle\caches\transforms-1\files-1.1\aapt2-3.2.1-4818971-windows.jar\6c67b1f76e068f8f255090d62215eadf\aapt2-3.2.1-4818971-windows\aapt2.exe link -I\
          C:\Users\pierr\AppData\Local\Android\sdk\platforms\android-27\android.jar\
          --manifest\
          D:\GitRepos\dicee-flutter\build\app\intermediates\merged_manifests\debug\processDebugManifest\merged\AndroidManifest.xml\
          -o\
          D:\GitRepos\dicee-flutter\build\app\intermediates\processed_res\debug\processDebugResources\out\resources-debug.ap_\
          -R\
          @D:\GitRepos\dicee-flutter\build\app\intermediates\incremental\processDebugResources\resources-list-for-resources-debug.ap_.txt\
          --auto-add-overlay\
          --java\
          D:\GitRepos\dicee-flutter\build\app\generated\not_namespaced_r_class_sources\debug\processDebugResources\r\
          --custom-package\
          co.appbrewery.dicee\
          -0\
          apk\
          --output-text-symbols\
          D:\GitRepos\dicee-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 4s
Finished with error: Gradle task assembleDebug failed with exit code 1

In the course, The instructor uses the "Flat Button" widget, which is no longer supported by flutter, Needs an update, You can use the alternate method as in my repository using "FloatingActionButton".

Following is the message printed

Launching lib/main.dart on AOSP on IA Emulator in debug mode... [!] Your app isn't using AndroidX. To avoid potential build failures, you can quickly migrate your app by following the steps on https://goo.gl/CP92wY. Running Gradle task 'assembleDebug'...

FAILURE: Build failed with an exception.

Almost all face the problem after cloning the repo which is not using AndroidX and 27 API on latest Flutter release More details of issue here https://stackoverflow.com/questions/59481062/flutter-on-android-studio-cloning-from-git-problem-package-get-has-not-been-ru

The What you will learn section in README.md says:

How to use onClick listeners to detect when buttons are pressed.

There is no onClick listener associated with a FlatButton widget. It should be onPressed instead, as we learn all along in the videos as well.

I just cloned the project using Version Control. I got the dependencies and then did a test run. App completed but no dice. Got this message:

I/Choreographer( 6942): Skipped 55 frames! The application may be doing too much work on its main thread.

Got socket error trying to find package cupertino_icons at https://pub.dartlang.org. pub get failed (server unavailable) -- attempting retry 6 in 32 seconds...

The project is unable to compile due to the migration to Android v2 embedding. Flutter provides instructions on how to remedy this issue, but the process can be complicated for people who are new to programming.

Migration Instructions for Android v2 Embedding

Migrated to current flutter/dart/android sdk.

To use it before this PR is merged:

git clone https://github.com/londonappbrewery/dicee-flutter.git cd dicee-flutter git pull origin pull/45/head

Or directly clone my repo: https://github.com/philippkeller/dicee-flutter

Your Flutter application is created using an older version of the Android embedding. It's being deprecated in favor of Android embedding v2. Follow the steps at

https://flutter.dev/go/android-project-migration

to migrate your project.