How to get the x & Y coordinates of a view

Question

I have placed an image view in my layout, now i need to know its x & y coordinates to draw some stuff over it dynamically.

I tried imageView.getTop(); & imageView.getY()but they both return "0", but the image is not starting from "0" there is some margin from start and much margin from top.

Is there any other way to get this.

Maybe this helps: https://stackoverflow.com/questions/2224844/how-to-get-the-absolute-coordinates-of-a-view — ChristianB, Jan 02 '21 at 19:41

score 1 · Answer 1 · answered Jan 02 '21 at 19:51

1

Try with imageView.getLocationOnScreen(int[]) to get X and Y of a view relative to its parent/screen:

int[] positions = new int[2];
imageView.getLocationOnScreen(positions);
int x = positions[0];
int y = positions[1];

answered Jan 02 '21 at 19:51

Blagojco

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score 1 · Accepted Answer · answered Jan 02 '21 at 19:52

To ensure view has had a chance to update, run your location request after the View's new layout has been calculated by using view.post:

view.post {
    val point = IntArray(2)
    view.getLocationOnScreen(point)
    val (x, y) = point
}

Values SHOULD no longer be 0 but i had bad experiences with huawei devices. Other way to get x and y coordinates is using viewTreeObserver

view.viewTreeObserver.addOnGlobalLayoutListener(object : ViewTreeObserver.OnGlobalLayoutListener {
            override fun onGlobalLayout() {
                view.viewTreeObserver.removeOnGlobalLayoutListener(this)      
                val point = IntArray(2)
                view.getLocationOnScreen(point)
                val (x, y) = point
            }
});

Possibly you experience some visual glitch with this approach

How to get the x & Y coordinates of a view

2 Answers2