Query firebase field returning null

Question

I am searching for the field (value) in the table (revenue) in the firebase database, but when performing the debug I get the following:

V/InputMethodManager: Starting input: tba=android.view.inputmethod.EditorInfo@cf4b4d9 nm : **com.example.controlefinanceiro ic=null**
D/InputMethodManager: startInputInner - Id : 0
I/InputMethodManager: startInputInner - mService.startInputOrWindowGainedFocus
D/InputTransport: Input channel constructed: fd=93
    Input channel destroyed: fd=89

In the field appears "null", follows the structure of my bank

private void inicializaComponentes() {
.... 
mDatabaseRefence = FirebaseDatabase.getInstance().getReference();
mDatabaseRefence.child("receita").child("valor").addValueEventListener( new ValueEventListener() { 
@Override public void onDataChange(@NonNull DataSnapshot dataSnapshot) { txtValor_Inicial = (TextView) findViewById(R.id.txtValor_Inicial); txtValor_Inicial.setText(String.valueOf(dataSnapshot.getValue())); }

Answer 1

I did it this way:

mDatabaseRefence = FirebaseDatabase.getInstance().getReference();
mDatabaseRefence.child("Receita").child("21420329-7525-475b-aec7-ac6ec037183b").child("valor").addValueEventListener( new ValueEventListener()...

I found the solution in this link:https://stackoverflow.com/questions/43293935/how-to-get-child-of-child-value-from-firebase-in-android