If you place a view on top of the ImageView that functions as a mask, you can achieve exactly that rounded image effect.
take a look at this example:
and a mask.xml drawable:
Two important things:
- the stroke width of the mask drawable should match the padding of the ImageView
- the stroke color of the mask drawable should match the background color.
- the radius of the mask corners must be adjusted to correspond with the stroke width (so you don't see the image behind the mask).
The sample produces the following image:
HTH
