CODEWITHSUNDEEP
androidfirebase
Vaisakh N
Vaisakh N

Reputation: 790

Firebase on disconnect callback

Is it possible to add a callback method in Firebase on Disconnect that I can used for to perform some operation rather than Firebase while the user goes offline 

.onDisconnect().setValue(Boolean.FALSE);

It is possible to update value in firebase while onDisconnect is called is it possible call a user defined method on this event?

Upvotes: 1

Views: 3565

Answers (2)

Svitlana
Svitlana

Reputation: 3006

this works for me!

DBManager.mOnlineRef.child(currentUserID).setValue(currentUserEmail);
DBManager.mOnlineRef.child(currentUserID).onDisconnect().removeValue(new  DatabaseReference.CompletionListener() {
            @Override
            public void onComplete(DatabaseError databaseError, DatabaseReference databaseReference) {
                Log.e(TAG, "Should be removed");
            }
});

Upvotes: 1

Frank van Puffelen
Frank van Puffelen

Reputation: 599031

It is possible to update a value in the Firebase database when the user disconnects. See https://www.firebase.com/docs/android/guide/offline-capabilities.html#section-presence

But since these onDisconnect() handlers run on the Firebase servers, it is not possible to call user-defined functions. If you want to run some code in your Android app when it detects that it has lost its connection to the Firebase servers, you can run a presence system: https://www.firebase.com/docs/android/guide/offline-capabilities.html#section-connection-state

Upvotes: 3

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