String and server

Question

I am surprised myself that I am writing such a question. I already broke my head, probably somewhere I missed something.

Here it is, everyone knows:

String str = "какой-то параметр";

But if I do it like this:

  public class БАБАБА { String str; protected void Любой метод { ...какой-то код и потом где-то str = dataSnapshot.getValue().toString(); // - прием string с firebase

That str is not assigned a value transmitted from the server, but remains null.

Maybe you need to somehow assign a different way, in some magical way? Maybe I missed something somewhere according to science.

Because of this, doing such a trick:

  public class БАБАБА { String str; TextView textView; protected void Любой метод { ...какой-то код и потом где-то str = textView.setText(dataSnapshot.getValue().toString()); // - прием string с firebase

Help please advice.

Try to cast the resulting value to the String type with this method str = (String) dataSnapshot.getValue()
I did it in another part of the program and everything worked.
Here: str = dataSnapshot.getValue().toString(); // - прием string с firebase
str = dataSnapshot.getValue().toString(); // - прием string с firebase .

Tema_Bel Tema_Bel 509 3 ten · Accepted Answer · 2016-05-03T12:09:27

Must save String.valueOf(...)

String and server

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