Android Studio Gradle error “Multiple dex files define…”
问题 My Project was working fine, when I have added facebook sdk into my project I have an error like this, I have tried so many ways to fix this, but I didn't. What should I do? Error:Execution failed for task ':app:packageAllDebugClassesForMultiDex'. > java.util.zip.ZipException: duplicate entry: bolts/AggregateException.class My App gradle is below apply plugin: 'com.android.application' android { compileSdkVersion 21 buildToolsVersion '21.1.2' defaultConfig { applicationId "com.example