无法从FirebaseDatabase获取密钥

Question

I'm pushing an object to FirebaseDatabase and trying to get the key of the object that I just pushed to Firebase . I've looked at Get the pushed ID for specific value in firebase android and I'm trying to use that but it's not working.

Initialization of DatabaseReference in onCreate

mDatabaseRef = FirebaseDatabase.getInstance().getReference().child("People");

The actual function-

 private String pushPersonToFirebase() {

        Person newPerson = new Person();
        String firstName = mFirstNameTextView.getText().toString();
        String lastName = mLastNameTextView.getText().toString();

        if(!firstName.equals("") && !lastName.equals("")) {
            newPerson.setFirstName(firstName);
            newPerson.setLastName(lastName);
            newPerson.setImgPath(anonymousPeople.get(indexAnon).toString());
            mDatabaseRef.push().setValue(newPerson);
            return mDatabaseRef.getKey();  //This always returns "People" need it to return the key of the object that was just pushed
        } else {
            Toast.makeText(this, "You didn't enter all fields", Toast.LENGTH_SHORT).show();
            return "";
        }

    }

Answer 1

you can get key using this way..

String key = mDatabaseRef.push().getKey(); // its your key
-- code---
newPerson.setFirstName(firstName);
newPerson.setLastName(lastName);
newPerson.setImgPath(anonymousPeople.get(indexAnon).toString());
--- code ---
mDatabaseRef..child(key).setValue(newPerson);