Conflicts with UIImagePickerController on iOs7

[superandrew]

When I instantiate the popover and after that I load a UIImagePickerController, the camera looks black for about 30 seconds or more.

I've made some changes on code (method loadColorButtons )which makes it work:

1. instead of using myQueue

   dispatch_queue_t myQueue = dispatch_queue_create("com.gazapps.myqueue", 0);

I am using

dispatch_async(dispatch_get_main_queue(), ^{...

1. In the same method, in the loop, instead of starting another queue, I replaced with this:

   //dispatch_sync(dispatch_get_main_queue(), ^{
   [self.buttonCollection addObject:colorButton];
   [scroll addSubview:colorButton];
   //});//end block

It works just fine.