When I try to upload my app on Google Play, it marks me this:
Upload Error You have uploaded an APK that can be debugged. Because of security, you must disable debugging in order to publish the file on Google Play. More information about debuggable APK files You have uploaded an APK that was signed in development mode. You must sign the APK file in publication mode. More information on how sign files You must use a different package name, because the prefix "com.example" is restricted.
To build the apk I've given Build APK ...
Did I forget something?