null for argument 'pathString'

Question

I am having an error when I perform queries in firebase, my code for query looks like this:

@Override
protected void onCreate(Bundle savedInstanceState) {
           


        

Answer 1

To solve your problem, just declare nome, cpf and placa Strings inside the coresponding onDataChange() methods, otherwise is null, due the asynchronous behaviour.

As an example, please use this code:

public void onDataChange(DataSnapshot dataSnapshot) {
    String nome = dataSnapshot.getValue(String.class);
    TextView txtNome = (TextView) findViewById(R.id.txtNomePerfil);
    txtNome.setText(nome);
}

In the same way, you need to make the other changes.