'supportedInterfaceOrientations'的实现中返回类型冲突:-警告 [英] Conflicting return type in implementation of 'supportedInterfaceOrientations': - Warning

问题描述

升级到Xcode 7.0后，我在UIViewControllerRotation方法中收到一条警告:- (NSUInteger)supportedInterfaceOrientations:

After upgrading to Xcode 7.0 I get a warning in the UIViewControllerRotation method: - (NSUInteger)supportedInterfaceOrientations:

实现中冲突的返回类型 'supportedInterfaceOrientations':'UIInterfaceOrientationMask'(aka 'enum UIInterfaceOrientationMask')vs'NSUInteger'(aka'unsigned int')

Conflicting return type in implementation of 'supportedInterfaceOrientations': 'UIInterfaceOrientationMask' (aka 'enum UIInterfaceOrientationMask') vs 'NSUInteger' (aka 'unsigned int')

那是为什么，我该如何解决?

Why is that, and how do I fix it?

如果转到定义，您将看到返回类型已正确更改: - (UIInterfaceOrientationMask)supportedInterfaceOrientations NS_AVAILABLE_IOS(6_0);，但是更改代码中的返回类型不会使警告消失.

If you go to the definition you'll see that the return type acctually has changed: - (UIInterfaceOrientationMask)supportedInterfaceOrientations NS_AVAILABLE_IOS(6_0); but changing the return type in the code doesn't silence the warning.

推荐答案

尝试此调整:

#if __IPHONE_OS_VERSION_MAX_ALLOWED < 90000  
- (NSUInteger)supportedInterfaceOrientations  
#else  
- (UIInterfaceOrientationMask)supportedInterfaceOrientations  
#endif  
{
   return UIInterfaceOrientationMaskPortrait;
}

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