Android how to get bounds of imageview with matrix

Question

I have an ImageView with scaletype set to matrix, and would like to get a Rect with the bounds of the image after the transformation of the matrix.

How do I get such a rect? thanks.

score 12 · Accepted Answer · answered Dec 21 '11 at 13:55

12

ImageView imageView = (ImageView)findViewById(R.id.imageview);
Drawable drawable = imageView.getDrawable();
Rect imageBounds = drawable.getBounds();

Then use Matrix.mapRect.

answered Dec 21 '11 at 13:55

2

So, complete code for me was `Rect bounds = imageView.getDrawable().getBounds(); RectF boundsF = new RectF(bounds); imageView.getImageMatrix().mapRect(boundsF); boundsF.round(bounds);` Thank you, it worked and I finally fixed a transition! – charlag Jun 09 '17 at 07:09

score 0 · Answer 2 · answered Jun 29 '22 at 02:09

ImageView imageView = (ImageView)findViewById(R.id.imageview);

Drawable drawable = imageView.getDrawable(); Rect imageBounds = drawable.getBounds();

this is wrong, this will get the original drawable bound, not the really bound
of bitmap drawn on ImageView

2 Answers2