How did my androud camera disappear?

[AC Question]

"Unfortunately camera has stopped" popped up. I reset the ogine but the camera still won't work.

 

[belodion]

I'm not sure what you mean by 'reset the ogine', but if you have tried Settings, Apps, All, Camera, then selected Clear Cache and Clear Data, but still have the pop-up, try Safe Mode, to test whether a third-party app is causing trouble.