Unique identity issue on Firebase

Question

When saving to Firebase with the push method, unique id is occurring.

How do I make it not happen?

(I have little English language. It is very good if you tell it simple.)

Answer 1

Just use setValue() method directly on the reference like this:

DatabaseReference rootRef = FirebaseDatabase.getInstance().getReference();
rootRef.child("Users").child("name").setValue("John");

But I recommend you reading Firebase official doc.