Recently the rear camera on my gs5 stopped working however the front camera still worked. But whenever i tried to open my default camera app the app would fail because it could not open the rear facing camera. So i decided to create an app that will open just the front camera first and not even attempt to open your rear camera. Therefore there is no failure and no error and you can still at least use one camera without force closing due to camera failure. Very simple but may be useful to some of you. Recently I have had trouble with the newest update of android OS to where the camera wont default to front camera. Update soon.