How to change Status Bar text color in iOS 7

How to change Status Bar text color in iOS 7
Set the UIViewControllerBasedStatusBarAppearance to YES in the .plist file.

1. In the viewDidLoad do a [self setNeedsStatusBarAppearanceUpdate];

2. Add the following method:
   

• (UIStatusBarStyle)preferredStatusBarStyle
  {
  return UIStatusBarStyleLightContent;
  }