I just upgraded my iPhone 5 iOS 7 to four beta version. Now when I run my app from Xcode 5 on this iPhone, status bar doesn’t hide, even though it should.
Not Working:
[[UIApplication sharedApplication] setStatusBarHidden:YES withAnimation:UIStatusBarAnimationFade];
Not Working:
[UIApplication sharedApplication].statusBarHidden = YES;
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in your apps plist file add a row call it "View controller-based status bar appearance" and set it to NO
Note that this simply does not work, if you are using UIImagePickerController in the app.
from http://www.openfl.org/developer/forums/general-discussion/iphone-5ios-7-cant-hide-status-bar/, mgiroux's solution