Execution failed for task ':

caused by:

Conflict between the versions of the test-app and the main app of the libary: 'com.android.support:support-annotations'

soultion:

i change this

configurations.all{resolutionStrategy.force'com.google.code.findbugs:jsr305:3.0.1'}

to this:

configurations.all{resolutionStrategy{force'com.android.support:support-annotations:24.2.1'}}