In my iOS video app status bar is hidden in some view controllers. I have done this using following code.
[[UIApplication sharedApplication] setStatusBarHidden:YES];
It works for iOS 5 and iOS 6 , but not in iOS 7.
I tried with this in particular view controller,
Eg:
-(BOOL)prefersStatusBarHidden { return YES; }
It works well, but I cant show status bar again in the parent view controller.
You should add this value to plist: "View controller-based status bar appearance" and set it to "NO".