Question

Let me explain, I had this Activity, where there is a Button and a TextView. I had to create a listener to this button(can’t be a inner class or private class), lets call ButtonListener. I need to change the TextView from the Activity inside the ButtonListener. How do I do that?

Activity –> Button b, TextView t

b.setOnClickListener(ButtonListener listener)

listener –> onClick() { //need to change the TextView here }

Thanks

Answer 1

public class YourActivity extends Activity {

ImageView    button     = null;
TextView     text       = null;

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) 
{
    super.onCreate(savedInstanceState);
    setContentView(R.layout.yourlayoutxml);

    text       = (TextView)  findViewById(R.id.id_TextView);
    button     = (ImageView) findViewById(R.id.id_ImageView);


    button.setOnClickListener(new OnClickListener() 
    {
            @Override
            public void onClick(View v) 
            {
                    //here you can manage your TextView     
                    text.doSomething();
            }
      }                         );
}
}

Hope this help.