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I created a standard Android app (ex. MyApp) which works fine. Now I would like to create a pro version that extends the standard app (ex. MyAppPro extends MyApp). From other articles I learned, that it is not possible in Android to extend from another App but only from a lib. But MyApp should be runnable too. What is the best practice to reach the goal?
Thanks for your help
Robi

Create a library of your original MyApp, then create a MyApp project that references LibMyApp try not to code anything that you don't want shared here. Setup your manifest with references to you Activities and such in LibMyApp. Create MyAppPro project reference LibMyApp, extend your library with MyAppPro only code.

Make use of the licensing options set up within the Android Market to change the look and behavior of your application.
See here for more information: http://developer.android.com/guide/publishing/licensing.html