Camera-app should warn the user when the camera hw is not available (used by another app)

[Ricardo Salveti]

current build number: 169
device name: krillin
channel: ubuntu-touch/ubuntu-rtm/14.09-proposed
last update: 2014-11-24 21:39:51
version version: 169
version ubuntu: 20141124
version device: 20141119-db417fa
version custom: 20141119-442-21-160

Install, open and use uTorch, then try opening the camera-app, you'll see that the app will fail to use the camera (probably because uTorch is using a piece of that).

We should show something to the user indicating that the app can't use the camera hardware probably because another app has a lock on it, or similar, so he knows he needs to close those other apps before using the camera.

[Ricardo Salveti (rsalveti)]

On Android I get the following message, when trying to use the camera-app after enabling flashlight from an external app:
'Camera error
Can't connect to the camera.'

[Florian Boucault (fboucault)]

I believe the API that uTorch uses to access the flash light should enforce releasing the flash light when uTorch is going to the background.

[Ricardo Salveti (rsalveti)]

Would also be nice to handle the case when the hw itself fails (or the camera-service is dead). Not sure we're doing that either.

[Pat McGowan (pat-mcgowan)]

The camera access is granted to the active app