问题 After the migration to AndroidX i'am facing this the following issue with the Google Auth lib: On Android 9 API 28: java.lang.IncompatibleClassChangeError: Class 'com.google.android.gms.auth.api.signin.internal.SignInHubActivity' does not implement interface 'androidx.lifecycle.LifecycleOwner' in call to 'androidx.lifecycle.Lifecycle androidx.lifecycle.LifecycleOwner.getLifecycle()' (declaration of 'androidx.lifecycle.LiveData' appears in /data/app/fourbottles.bsg.workinghours4b-G1onPKgFFE