Flutter Build APK: Execution failed for task ':speech_recognition:verifyReleaseResources'

Question

everybody. I have some issues with build apk as release method in flutter. I don't really know why this has error. This refers https://github.com/rxlabz/speech_recognition/tree/master/example

During building as release method, issues are following.

FAILURE: Build failed with an exception.                                                                           

* What went wrong:                                                                                                 
Execution failed for task ':speech_recognition:verifyReleaseResources'.                                            
> A failure occurred while executing com.android.build.gradle.internal.tasks.Workers$ActionFacade                  
   > Android resource linking failed                                                                               
     /Users/kk/.gradle/caches/transforms-2/files-2.1/0a271e99b6771ad4a84318244d532fb7/core-1.0.0/res/values/values.xml:57:5-88:25: AAPT: error: resource android:attr/fontStyle not found.

     /Users/kk/.gradle/caches/transforms-2/files-2.1/0a271e99b6771ad4a84318244d532fb7/core-1.0.0/res/values/values.xml:57:5-88:25: AAPT: error: resource android:attr/font not found.

     /Users/kk/.gradle/caches/transforms-2/files-2.1/0a271e99b6771ad4a84318244d532fb7/core-1.0.0/res/values/values.xml:57:5-88:25: AAPT: error: resource android:attr/fontWeight not found.

     /Users/kk/.gradle/caches/transforms-2/files-2.1/0a271e99b6771ad4a84318244d532fb7/core-1.0.0/res/values/values.xml:57:5-88:25: AAPT: error: resource android:attr/fontVariationSettings not found.

     /Users/kk/.gradle/caches/transforms-2/files-2.1/0a271e99b6771ad4a84318244d532fb7/core-1.0.0/res/values/values.xml:57:5-88:25: AAPT: error: resource android:attr/ttcIndex not found.


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BUILD FAILED in 3m 45s         

Solution

I know, the answer might be too late, but anyway, this is annoying issue - I've got the same problem now and spent couple of hours fighting it.

Finally the workaround was to manually change in the build.gradle in the Android folder of the lib the "compileSdkVersion" property from 25 to 28, after that I managed to compile the project.