Get the co-ordinates of a touch event on Android

Question

I\'m new to Android, I\'ve followed the hello world tutorial through and have a basic idea of what\'s going on. I\'m particularly interested in the touch screen of my T-Mob

Answer 1

It sounds like you want to get touch events from the whole area of your layout for this particular test. Try attaching the touch listener to your parent view rather than a separate target view.

This isn't a very common approach. In most cases you will want to listen for touch events in a specific child view and if you have other views in your layout that handle touch events (such as a button) they'll take priority over a parent view. See http://developer.android.com/guide/topics/ui/ui-events.html for more info about handling UI events.

Layout (touch_viewer.xml):

And in your activity:

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.touch_viewer);

    final LinearLayout parent = (LinearLayout) findViewById(R.id.parent);
    final TextView text = (TextView) findViewById(R.id.text);
    parent.setOnTouchListener(new OnTouchListener() {
        public boolean onTouch(View v, MotionEvent ev) {
            text.setText("Touch at " + ev.getX() + ", " + ev.getY());
            return true;
        }
    });
}