Question

This maybe a stupid idea, but does anyone know is it possible to access one activity’s object form other places?

To be specific, lets say if you have an activity A (with a textView t) and you create a normal java class B.

At onCreate, you start to run B for some calculation like below,

public class MyActivity extends Activity {
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    t = (TextView)findViewById(R.id.outputtext);
    Somejava B = new Somejava();
    B.run();
  }
}

Is there a way for B to update the textView?

I know the simple way (maybe the correct way) is to return the result from B class and use t.setText(result) in MyActivity, but I’m just want to know is it possible to update the textview in B?

Answer 1

can simply pass activity refernce to b in constructor and create the method in your acitivty to update textview. if you using another thread not forgot to use handler or other ways to update UI thread.