Question

I have a little problem I pass “0” to activity using putExtra and I get some strange result in log:

0
false

But it must be
0
true

What’s matter

public class ItemEditCreate extends Activity{
String name;
EditText editText;

public void onCreate(Bundle savedInstanceState){
    super.onCreate(savedInstanceState);
    setContentView(R.layout.edit_create);

    if (savedInstanceState == null){
        Bundle extras = getIntent().getExtras();
        if (extras == null){
            name = null;
        }else{
            name = extras.getString("Item");
        }
    }else{
        name = (String) savedInstanceState.getSerializable("Item");
    }
    Log.i("Hello",name);
    Log.i("Hello",Boolean.toString((name == "0")));

    if (name == "0"){
       setTitle("Добавление элемента");
    }else{
        setTitle("Редактирование элемента");
        editText = (EditText) findViewById(R.id.edited_name);
        editText.setText(name);
    }
}
}

Answer 1

Problem is in condition name == "0". == operator doesnt compare values of two strings. To compare value of two strings use equals() or equalIgnoreCase() methods

Use name.equals("0") or name.equalsIgnoreCase("0")