Android Studio: Adding dependencies

In your project's build.gradle (inside your app's folder, on the outermost).

...

dependencies {
    compile 'com.google.code.gson:gson:2.2.4'    

    compile 'com.android.support:appcompat-v7:22.2.0'    

    compile 'com.android.support:design:22.2.0'    

    compile 'com.android.support:support-v4:22.2.0'    

    compile 'com.michaelpardo:activeandroid:3.1.0-SNAPSHOT'
}