i need some help i can't run xylophone-flutter

[krit okoye]

Launching lib\main.dart on Android SDK built for x86 in debug mode...
Initializing gradle...
Resolving dependencies...
Running Gradle task 'assembleDebug'...

FAILURE: Build failed with an exception.

• What went wrong:
  Execution failed for task ':app:processDebugResources'.

Android resource linking failed
Output: C:\xylophone-flutter\build\app\intermediates\incremental\mergeDebugResources\merged.dir\values\values.xml:186: error: resource android:attr/fontVariationSettings not found.
C:\xylophone-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\user.gradle\caches\transforms-1\files-1.1\aapt2-3.2.1-4818971-windows.jar\ed5d63241c32b03b627a8ec4203b323c\aapt2-3.2.1-4818971-windows\aapt2.exe link -I
C:\Users\user\AppData\Local\Android\sdk\platforms\android-27\android.jar
--manifest
C:\xylophone-flutter\build\app\intermediates\merged_manifests\debug\processDebugManifest\merged\AndroidManifest.xml
-o
C:\xylophone-flutter\build\app\intermediates\processed_res\debug\processDebugResources\out\resources-debug.ap_
-R
@C:\xylophone-flutter\build\app\intermediates\incremental\processDebugResources\resources-list-for-resources-debug.ap_.txt
--auto-add-overlay
--java
C:\xylophone-flutter\build\app\generated\not_namespaced_r_class_sources\debug\processDebugResources\r
--custom-package
co.appbrewery.xylophone
-0
apk
--output-text-symbols
C:\xylophone-flutter\build\app\intermediates\symbols\debug\R.txt
--no-version-vectors
Daemon: AAPT2 aapt2-3.2.1-4818971-windows Daemon #0
Output: C:\Users\user.gradle\caches\transforms-1\files-1.1\support-compat-28.0.0.aar\81bcf9a7fa6cfeeb7c44abcfdc197db5\res\values\values.xml:89:5-125:25: AAPT: error: resource android:attr/fontVariationSettings not found.

C:\Users\user.gradle\caches\transforms-1\files-1.1\support-compat-28.0.0.aar\81bcf9a7fa6cfeeb7c44abcfdc197db5\res\values\values.xml:89:5-125:25: AAPT: error: resource android:attr/ttcIndex not found.

error: failed linking references.
Command: C:\Users\user.gradle\caches\transforms-1\files-1.1\aapt2-3.2.1-4818971-windows.jar\ed5d63241c32b03b627a8ec4203b323c\aapt2-3.2.1-4818971-windows\aapt2.exe link -I
C:\Users\user\AppData\Local\Android\sdk\platforms\android-27\android.jar
--manifest
C:\xylophone-flutter\build\app\intermediates\merged_manifests\debug\processDebugManifest\merged\AndroidManifest.xml
-o
C:\xylophone-flutter\build\app\intermediates\processed_res\debug\processDebugResources\out\resources-debug.ap_
-R
@C:\xylophone-flutter\build\app\intermediates\incremental\processDebugResources\resources-list-for-resources-debug.ap_.txt
--auto-add-overlay
--java
C:\xylophone-flutter\build\app\generated\not_namespaced_r_class_sources\debug\processDebugResources\r
--custom-package
co.appbrewery.xylophone
-0
apk
--output-text-symbols
C:\xylophone-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 3s
Finished with error: Gradle task assembleDebug failed with exit code 1

[krit okoye]

i try run a --stacktrace and --info --debug --scan but it not work

[mahmunk]

Getting same error. - also get the error in your other projects

[Seung Kwak]

https://stackoverflow.com/questions/49208772/error-resource-androidattr-fontvariationsettings-not-found
Change CompileSdkVersion -> 28

[TheMuellenator]

Thanks for raising this. Updated the project. Should work now.