Android Package build fails with "DexIndexOverflowException: Cannot merge new index 65961 into a non-jumbo instruction" error

In some cases a build will fail with this error because the dex files being merged include more than 65536 methods or strings. This can be corrected by enabling jumbo mode using a build-extras.gradle file.

build-extras.gradle

Create a file named build-extras.gradle in the root of your project with the following contents:

android {
    defaultConfig {
    multiDexEnabled true
    }
}

dependencies {
    compile 'com.android.support:multidex:1.0.1'
} 

config.xml

Add a resource-file node to the Android platform in config.xml with the target path shown below. This will move the build-extras.gradle file to the correct location when your platform is generated.

<platform name="android">
  <resource-file src="build-extras.gradle" target="app/build-extras.gradle" />
  ...

Be sure to commit the build-extras.gradle file to your project repo.

Error Examples:

Execution failed for task ':transformDexWithDexForRelease'.
> com.android.build.api.transform.TransformException: com.android.ide.common.process.ProcessException: 
java.util.concurrent.ExecutionException: com.android.dex.DexIndexOverflowException: Cannot merge new index 65961 into a non-jumbo instruction!