Android; Confused by views?

I have created a class (InputControl) which extends the view of my main class (Main), and takes focus of the screen. I have a button on the main xml layout which calls control() and sets up my InputCont开发者_运维百科rol view, from there I capture user input.

How can I return back to the xml layout from the InputControl view class?

public class Main extends Activity {

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

    InputControl = new InputControl(this);
}

//......SNIP!

public void control(){
setContentView(InputControl);
    InputControl.requestFocus();
}

}


public class InputControl extends View implements OnTouchListener {

public InputControl(Context context) {
    super(context);
    setFocusable(true);
    setFocusableInTouchMode(true);

    this.setOnTouchListener(this);

}


public boolean onTouch(View view, MotionEvent event) {

//...I AM CAPTURING USER TOUCH EVENTS HERE

}


}

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Unless you have have a specific reason for doing things this way, a better way might be to have a second activity (InputControlActivity for example) with its own layout file and embed your InputControl class into that.

You would then start an instance of the second activity (with startActivity()) - once you're finished in the InputControlActivity, simply pressing the phone's BACK button will close that activity and return to the main one.