This is my first attempt at creating an android application. In trying to use the Awareness API provided by Google I receive a SecurityException in logcat, and the error:
If someone facing similar issue with correct manifest declaration as mentioned in Google here can try generating API key on Google Developer Console using debug keystore for testing purpose and replacing same with release keystore while going to production.
How generate API key? Please check out Google's word itself Here
Hope it will help someone in future.