app:transformClassesWithJarMergingForDebug FAILED

Question

when I try to run the app I am getting this error

before

Error:Execution failed for task \':app:transformClassesWithJarMergingForDebug\'         


        

Answer 1

please check if some of your dependencies have multidex as dependency and exclude it. For example for Facebook SDK: you have this

 compile 'com.facebook.android:facebook-android-sdk:4.7.0'

change to this

compile('com.facebook.android:facebook-android-sdk:4.7.0') {
    exclude group: 'com.android.support', module: 'multidex'
}

and check for other also.