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

I managed to fix this issue. The reason was that I included the android support library 19.0.0 as a dependency, but 19.1.0 is required. See here for more information

So it has to be

dependencies {
    compile 'com.android.support:support-v4:19.1.0'
    compile 'com.crashlytics.android:crashlytics:1.+'
    compile 'com.android.support:support-annotations:20.0.0'
}