This is an old issue, but still I didn't find a solution. It looks like User Media pluging is supposed to be used only in browsers but not in mobile devices native apps. There are cordova plugins (Cranberrygame, etc) that let access device's camera, but they all prompt the user to take photo or video manually. However, I need to capture images without user intervention (except maybe to give permission to access the camera just once). The way UserMedia plugin does it is good for me, but sadly, I can't use it without a browser (((( Any ideas?