FAILURE: Gradle Build failed with an exception

Question

I have included the new Android Library Module(dmxmediapicker) project into the My currently working Library project(Myapplication),which I have us

Answer 1

As per ligi's comment

I have set the buildToolsVersion As 21.1.1 now the build issue have been solved.

Answer 2

This will solve your problem

In Android Studio, go to Tools->SDK manager and see that your android version is downloaded or not (for whatever emulator you have chosen as your virtual device). If not download it and play the emulator again.

This should work now!!