Custom Image View
<p>I have this image that comes back from an API, which represents the users avatar: </p>

<p><img src="http://i.stack.imgur.com/w1Mpn.png" alt="user avatar"></p>

<p>However, my graphics department has designed the app to mask the image to make it look like this at runtime (to match our existing design of sharp edges, etc): </p>

<p><img src="http://i.stack.imgur.com/uDBJy.png" alt="enter image description here"> </p>

<p>Notice the small edge cutout on the bottom left? </p>

<p>I'd love to be able to create a custom ImageView that handled this for me. Unfortunately I'm not sure how to go about doing that. How can I create the bottom image in a custom ImageView. Is this possible? Do I mask it? If so, how? </p>

<p>Thanks!</p>
