Gradle build failure when trying to use Facebook SDK

Question

I am trying to use the Facebook SDK in a project in Android Studio. I am following step 3 of this tutorial. When I try to Run the app, I get a \"Gradle: Execution failed for

Answer 1

You're adding the android support library twice, resulting in a dex merge conflict. Your main project refers to the maven library with 'com.android.support:support-v4:13.0.+' and your Facebook project refers to it with files('libs/android-support-v4.jar'). Gradle cannot resolve conflicts between local jar files, so you must refer to them through maven.

Modify the dependencies section of your Facebook build.gradle to:

dependencies {
    compile 'com.android.support:support-v4:13.0.+'
}

and everything should work.

Answer 2

In android studio, this is how I include a support library and facebook SDK. I'm supporting API 15+.

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'fr.avianey:facebook-android-api:+@aar'
    compile 'com.android.support:support-v13:20.0.0'
    ...
}

Answer 3

I had a similiar issue and it was just plain oversight on my part. I had conflicting versions of com.android.tools.build:gradle:1.1.2 and 1.1.1 inside two different gradle.build files.

app/gradle.build

dependencies {
    ...
    compile 'com.android.tools.build:gradle:1.1.2'
    ...
}

top-level gradle.build

dependencies {
        classpath 'com.android.tools.build:gradle:1.1.0'
    }

I commented out the line in my project's gradle.build file, ran gradlew clean from the command line, restarted Android Studio and then order was restored in the universe.