How to logout user from firebase database?

问题

I'm using firebase database using firebaseUser authorisation. I successfully logout user from app, but when I logout user the app is crashed due to firebase database reference. I got logcat message showing that

This client does not have permission to perform this operation.

How can I logout user from firebase database?

回答1:

You don't logout from the "database" as such, but logout from Firebase with FirebaseAuth.getInstance().signOut().

After that, the user can't access parts of the database that requires user credentials, and I guess it's the reason why your app crashed. So when you make database calls, you need to check if the user has correct credential.

回答2:

I added ValueEventListener to firebase database reference, when i'm trying to logout the user ValueEventListener is still running in background that's why my app is crashing.

I removed ValueEventListener from firebase database reference and my problem is solved.

来源：https://stackoverflow.com/questions/45183677/how-to-logout-user-from-firebase-database