Firestore Tutorial Part 4 – SNAPSHOT LISTENER – Android Studio Tutorial
In part 4 of the Firestore tutorial, we add an EventListener to our DocumentReference with the addSnapshotListener method. In it’s onEvent method we can get real time updates as soon as something changes in our document. The same as in our get method we get passed a DocumentSnapshot that contains the data of our document.
We register this EventListener in onStart and unregister it in onStop, either by saving a reference to the ListenerRegistration or simply by passing our activity to the addSnapshotListener method.
Watch the whole playlist:
Code for this part:
https://gist.github.com/codinginflow/7d2016f790740dc1298d9460aedb4ea2
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