本文介绍了'supportedInterfaceOrientations'的实现中返回类型冲突:-警告的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
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:
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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