Display and hide of status bar in IOS program

Project sometimes need to be the top of the status bar to hide, search on the internet basically can not be used, the reason is probably when the program is running when the status bar has been displayed, and then adjust the status bar of the Set method will not work (as to why not work is not clear).

Hide the status Bar Method 1:

Modify the Plist file to add the Status bar is initially hidden when the setting is Yes, the program is hidden when it starts (the startup page does not appear)

Add view controller-based status bar appearance set to No

This modification hides the status bar in the entire project (Note: Celan program shift+command+k after plist file)

Hide the status bar Method 2:

You can adjust the following method in the interface that you need to hide

-(BOOL) Prefersstatusbarhidden {
return YES;
This can be hidden in the current interface. (Note: If the status bar in the entire project is hidden, the method will not be triggered)

Display and hide of status bar in IOS program