Firebase add another data to a child without overwriting existing data

Question

I have this following method which i use when saving a new data

public void registerNewUser(FirebaseUser id, String name, String email, int count) { User user = new User(name, email, count); DatabaseReference ref = FirebaseDatabase.getInstance() .getReference(); ref.child("path") .child(id.getUid()).setValue(user); }

I like to add a new data in the same child/folder when the user is done registering, this is what i have done so far.

 DatabaseReference ref = FirebaseDatabase.getInstance() .getReference(); ref.child("path") .child(id.getUid()).setValue("THE NEW DATA");

But the problem is it clears and overwrite the old data. Is there any efficient way to do this?

Talha Q · Accepted Answer · 2017-07-06 03:27:27Z

You can try this code

DatabaseReference ref = FirebaseDatabase.getInstance() .getReference(); ref.child("path") .child(id.getUid()+"/username").setValue(user); ref.child("path") .child(id.getUid()+"/newdata").setValue("THE NEW DATA");

Below Image Output Code

ref.child("path") .child(id.getUid()+"/username").setValue(["username": "isabellap"]); ref.child("path") .child(id.getUid()+"/build").setValue(["build": "1.0.7"]);

Output

Thanks, but i want it to joined the existing save data not just create a new child

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