what method will called when we start to rotate device and after it finished

Question

i want to detect a rotation process on ipad programmatically. In this case i want to set a boolean into yes, when the rotation will begin, and set it false after the rotation di

Answer 1

In the UISplitViewController protocol, the new method for iOS8 is

- (void)splitViewController:(UISplitViewController *)svc willChangeToDisplayMode:(UISplitViewControllerDisplayMode)displayMode

There are four display modes:

typedef enum UISplitViewControllerDisplayMode : NSInteger {
  UISplitViewControllerDisplayModeAutomatic,
  UISplitViewControllerDisplayModePrimaryHidden,
  UISplitViewControllerDisplayModeAllVisible,
  UISplitViewControllerDisplayModePrimaryOverlay,
} UISplitViewControllerDisplayMode;

BUT this method will NEVER return Automatic.