Widget - Drag Widget

img.setOnTouchListener(new OnTouchListener() {

PointF DownPT = new PointF();
PointF StartPT = new PointF();
@Override
public boolean onTouch(View v, MotionEvent event) {
int eid = event.getAction();
switch (eid) {
case MotionEvent.ACTION_MOVE:
PointF mv = new PointF(event.getX() - DownPT.x, event.getY() - DownPT.y);
img.setX((int)(StartPT.x+mv.x));
img.setY((int)(StartPT.y+mv.y));
StartPT = new PointF(img.getX(), img.getY());
break;
case MotionEvent.ACTION_DOWN:
DownPT.x = event.getX();
DownPT.y = event.getY();
StartPT = new PointF(img.getX(), img.getY());
break;
case MotionEvent.ACTION_UP:
float distance = DownPT.x - event.getX();
if (distance == 0) {
showMessage("Clicked");
}
break;
default : break;
}
return true;
}
});