问题
After upgrading from Android Gradle Plugin 3.2.0 to 3.3.0-alpha13, I'm seeing the following build error:
> Task :app:fabricGenerateResourcesDebug FAILED
ERROR - Crashlytics Developer Tools error.
java.lang.IllegalArgumentException: Crashlytics found an invalid API key: null.
Check the Crashlytics plugin to make sure that the application has been added successfully!
Contact support@fabric.io for assistance.
It appears that the processDebugGoogleServices task is no longer running before the fabricGenerateResourcesDebug task.
I'm on version 4.1.0 of the Google Services plugin and 1.25.4 of the Fabric plugin.
回答1:
This is a known incompatibility with the v4.1.0 plugin and AGP 3.3 alpha versions. The workaround is to downgrade to v4.0.2 of the google-services plugin. More discussion and details may be found here: https://github.com/firebase/quickstart-android/pull/661.
回答2:
google-services 4.2.0 also fixes the problem.
platforms/android/build.gradle
classpath 'com.google.gms:google-services:4.1.0'
to
classpath 'com.google.gms:google-services:4.2.0'
solve the issue
回答3:
In my case update of google-services solve the issue
classpath 'com.google.gms:google-services:4.1.0'
to
classpath 'com.google.gms:google-services:4.3.2'
来源：https://stackoverflow.com/questions/52614015/invalid-crashlytics-api-key-error-when-upgrading-to-android-gradle-plugin-3-3-0