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

Updating Android SDK Tools fixed it for me, now it just sees the copy in android-support-v4.jar.

I had the same problem when using ant, and the annotations library was being included automatically by an outdated sdk.dir/tools/ant/build.xml.