I have some data in Firebase Database:
- order
-catched : false
-completed : false
- user
-name : ejemplo
I would like that when you move to an Activity, it will remain listening in a persistent manner if a change occurs in "catched", in this case if it changes to "true"; in order to be able to execute another action when said event occurs. How could I do this?
Thanks and I remain attentive.
(I suppose that the project in FB is already created and your app in android with the necessary aggregates)
1) Reference
DatabaseReference mRootRef = FirebaseDatabase.getInstance().getReference();
DatabaseReference mOrderRef = mRootRef.child("order");
2) Get the value of the desired child
mOrderRef.addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
boolean mCatched = dataSnapshot.child("catched").getValue(boolean.class);
}
@Override
public void onCancelled(DatabaseError databaseError) {
}
});
3) The value is now in mCatched and you can use it as necessary.