Properly log out a user from android app

Question

I\'m developing a small android app, and basically so far it just has login and logout functionality. I\'m using Firebase to store user data and also for authentication.

Answer 1

Delete tokens and Instance IDs

String authorizedEntity = PROJECT_ID;  
String scope = "GCM";
FirebaseInstanceID.getInstance(context).deleteToken(authorizedEntity,scope);

You can also delete the Instance ID itself, including all associated tokens. The next time you call getInstance() you will get a new Instance ID:

FirebaseInstanceID.getInstance(context).deleteInstanceID();
String newIID = InstanceID.getInstance(context).getId();