SBAppStatusBarManager is a singleton class that manages the status bar. You can access the singleton instance with the nonstandard method as follows:
This class was not available prior to iOS 7.
The following method can be used to hide the status bar.
The following method can be used to show the status bar.
The following method can be used to modify the opacity of the status bar.
However, it should be noted that all changes made to the status bar are temporary, and are reverted to defaults when an app is opened.
- Header: http://github.com/kennytm/iphone-private-frameworks/blob/master/SpringBoard/SBAppStatusBarManager.h