multiple dex files define landroid/support/annotation/AnimRes

Question

The moment I added the android support annotations to my dependencies

compile \'com.android.support:support-annotations:20.0.0\'

I got this erro

Answer 1

If you import AppCompat as a library project and you also have android-support-annotations.jar in libs elsewhere, make sure to import everywhere AppCompat library only (it already includes this annotations lib). Then delete all android-support-annotations.jar to avoid merging multiple versions of this library.