android setText

/* on click function */
public void a(android.view.View view)
{
    android.widget.TextView b;

    Log.d(":-)", "Button Pressed");

    b = ((android.widget.TextView)
        getLayoutInflater()
        .inflate(R.layout.fragment_test, null)
        .findViewById(R.id.button1));

    Log.d(":-)", "Text before: " +  b.getText());

    b.setText("APA");

    Log.d(":-)", "Text after: " +  b.getText());
}

/* log output (pressed button 2 times in a row) */ /*
Button Pressed
Text before: Hello world!
Text after: APA
Button Pressed
Text before: Hello world!
Text after: APA
*/