It's not exactly a template. It's simple code, you need to execute in eclipse. To implement notification you need to install one plugin in your WordPress site and implement Google Cloud Messaging (GCM) in your Android App. It's a lengthy process, if you implement GCM. But not impossible.
According to Rahul Dixit, you can built easily through those sites. Try those sites, if you can't then get back to here. We will help you.