If i have an ImageView that fills the screen.
The ImageView background is set to green color.
I place a bitmap in the ImageView, keeping bitmap proportions.
You should be able to get the (x, y) coordinates of the drawable inside, if that's what you're looking for. Try this:
ImageView img = (ImageView)findViewById(R.id.img);
Rect r = img.getDrawable().getBounds();
int drawLeft = r.left;
int drawTop = r.top;
int drawRight = r.right;
int drawBottom = r.bottom;
drawLeft is your X value.
drawTop is your Y value.