W/CameraBase﹕ An error occurred while connecting to camera: 0

Question

There was a similar question but it went unresolved:

W/CameraBase﹕ An error occurred while connecting to camera: 0 on camera.open() call

I have an app which

Answer 1

The "fail to connect to camera service" means that your (or some other) camera app has failed to release camera properly. This was happening to me occasionally as I was developing my app, too. The first thing I'd try is to open the camera from the default camera app that comes with the phone (just tapping the "camera" button). If that would fail to open, then the only option was to restart the phone.

This is speculation, but your code might have a bug that surfaces only occasionally and it just didn't appear until now through pure luck. If it persist, check out the questions related to "how to release camera properly in android". They had helped me to deal with this.