Camera shows a black preview, if there is any operation running in the background thread.

Hi,
Camera launched from app using UIImagePickerViewController shows a black preview, if there is any operation running in the background thread. This was not an issue in ios 6. Can you please fix this with next update?
Thanks & Regards,
Dileep Kumar

Some things that might help:
1. Only the most recently used apps actually occupy memory (used to be the most recent 4, but may have changed in the latest iPhones). After 4 (or so), IOS writes them out of active memory, as it does for even the latest 4 if there's no activity for a long time. So the business of closing all the open apps, apart from the most recent ones doesn't make a difference. Tis article has a good explanation:
http://www.speirs.org/blog/2012/1/2/misconceptions-about-ios-multitasking.html
2. There are settings about background app activity that might help:
- Settings, General, Background App Refresh controls which apps can update their data in the background
- Settings, Notifications controls which apps can tell you things, which they have to wake up to do.
- Settings, Privacy, Location Services controls which apps monitor your location - another activity that uses resources
Hope some of that helps

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