How to apply top offset for status bar in iOS7 for UITabBarController children only

Question

My app is a UITabBarController based app with 3 children vc. The status bar is overlapping with my viewcontrollers. I have tried everything I have found in SO:

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Answer 1

for iOS 7 and xcode 5 to avoid overlapping

use in

viewDidLoad method

self.edgesForExtendedLayout = UIRectEdgeNone;
self.automaticallyAdjustsScrollViewInsets = NO;