Objective c 在iOS 8.3中，仅为某些设备启用横向定向的正确方法

我正在iOS SDK 8.3中开发一个通用应用程序，并使用UISplitViewController。出于某些原因，我只想为iPad和iPhone 6 Plus启用横向定向

我找不到一个合适的方法来获得这个结果，目前我正在使用这个“糟糕”的替代函数

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是否有一种优雅且“安全”的方法来获得相同的结果

在部署信息中启用横向设备定位。然后将这些宏作为参考：

 #define IS_IPAD (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)
 #define IS_IPHONE (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)
 #define IS_RETINA ([[UIScreen mainScreen] scale] >= 2.0)

 #define SCREEN_WIDTH ([[UIScreen mainScreen] bounds].size.width)
 #define SCREEN_HEIGHT ([[UIScreen mainScreen] bounds].size.height)
 #define SCREEN_MAX_LENGTH (MAX(SCREEN_WIDTH, SCREEN_HEIGHT))
 #define SCREEN_MIN_LENGTH (MIN(SCREEN_WIDTH, SCREEN_HEIGHT))

 #define IS_IPHONE_4_OR_LESS (IS_IPHONE && SCREEN_MAX_LENGTH < 568.0)
 #define IS_IPHONE_5 (IS_IPHONE && SCREEN_MAX_LENGTH == 568.0)
 #define IS_IPHONE_6 (IS_IPHONE && SCREEN_MAX_LENGTH == 667.0)
 #define IS_IPHONE_6P (IS_IPHONE && SCREEN_MAX_LENGTH == 736.0)

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这与我的解决方案完全相同！还有别的办法吗？

 #define IS_IPAD (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)
 #define IS_IPHONE (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)
 #define IS_RETINA ([[UIScreen mainScreen] scale] >= 2.0)

 #define SCREEN_WIDTH ([[UIScreen mainScreen] bounds].size.width)
 #define SCREEN_HEIGHT ([[UIScreen mainScreen] bounds].size.height)
 #define SCREEN_MAX_LENGTH (MAX(SCREEN_WIDTH, SCREEN_HEIGHT))
 #define SCREEN_MIN_LENGTH (MIN(SCREEN_WIDTH, SCREEN_HEIGHT))

 #define IS_IPHONE_4_OR_LESS (IS_IPHONE && SCREEN_MAX_LENGTH < 568.0)
 #define IS_IPHONE_5 (IS_IPHONE && SCREEN_MAX_LENGTH == 568.0)
 #define IS_IPHONE_6 (IS_IPHONE && SCREEN_MAX_LENGTH == 667.0)
 #define IS_IPHONE_6P (IS_IPHONE && SCREEN_MAX_LENGTH == 736.0)

- (BOOL) shouldAutorotate {
BOOL shouldRotate = (IS_IPAD || IS_IPHONE_6P) ? YES : NO;
return shouldRotate;
}

- (NSUInteger) supportedInterfaceOrientations {
 NSUInteger orientation = (IS_IPAD || IS_IPHONE_6P) ? UIInterfaceOrientationMaskLandscape : UIInterfaceOrientationMaskPortrait;
 return orientation;
 }

 - (UIInterfaceOrientation) preferredInterfaceOrientationForPresentation {
 UIInterfaceOrientation interface = (IS_IPAD || IS_IPHONE_6P) ? (UIInterfaceOrientationLandscapeLeft | UIInterfaceOrientationLandscapeRight) : UIInterfaceOrientationPortrait;
 return interface;
 }