Crash when minimizing and opening the app again

[philipgiuliani]

Steps to reproduce:

• Open the camera (Demo app also)
• Go to homescreen
• Switch back to the App
• Camera is black. Click on it and it crashes.

[r4phab]

Same issue, quite annoying. Except that, great library, thanks a lot btw :)

[boxme]

Resolved in commit f135f2a99f374e66b6d8f21bd7d1ee09610df894