android: how to register my app as "camera app"
<p>I was wondering how to tell android that my app is a camera app, so other apps know that they can start my app to get a picture.
E.g. with pixlr-o-matic you can either select an image from the gallery or you can request it from a camera app of your choice.</p>

<p>edit: 
how do i return the picture to the calling app?</p>
