问题描述
完整警告:
Implicit conversion from enumeration type 'UIInterfaceOrientation' to different enumeration type 'UIDeviceOrientation'
在线获取它:
[self orientationChanged:interfaceOrientation];
这是方法:
- (void)orientationChanged:(UIInterfaceOrientation)interfaceOrientation
我真的不明白这个警告是从哪里来的.
I can't really understand where this warning is coming from.
推荐答案
UIDeviceOrientation是指设备的物理方向，而UIInterfaceOrientation是指用户界面的方向.当您调用方法时
UIDeviceOrientation refers to the physical orientation of the device whereas UIInterfaceOrientation refers to the orientation of the user interface. When you call your method
[self orientationChanged:interfaceOrientation];
根据该方法，当您应该使用UIInterfaceOrientation时，很可能将其传递给UIDeviceOrientation.
you are most likely passing it a UIDeviceOrientation when you should, according to the method, be using a UIInterfaceOrientation.
仅在这一点上进行扩展，UIDeviceOrientation是UIDevice类的属性，并且有以下可能的值:
Just to expand on this point a bit, UIDeviceOrientation is a property of the UIDevice class, and there are these possible values:
UIDeviceOrientationPortrait-主页按钮朝下
UIDeviceOrientationPortraitUpsideDown-主页按钮朝上
UIDeviceOrientationLandscapeLeft-向右的主页按钮
UIDeviceOrientationLandscapeRight-主页按钮向左
UIDeviceOrientationFaceUp-设备平坦，屏幕朝上
UIDeviceOrientationFaceUp - Device is flat, with screen facing up
UIDeviceOrientationFaceDown-设备平坦，屏幕朝下
UIDeviceOrientationFaceDown - Device is flat, with screen facing down
对于UIInterfaceOrientation，它是UIApplication的属性，仅包含与状态栏方向相对应的4种可能性:
As for UIInterfaceOrientation, it is a property of UIApplication and only contains 4 possibilities which correspond to the orientation of the status bar:
UIInterfaceOrientationPortrait = UIDeviceOrientationPortrait,
UIInterfaceOrientationPortraitUpsideDown = UIDeviceOrientationPortraitUpsideDown,
UIInterfaceOrientationLandscapeLeft = UIDeviceOrientationLandscapeRight,
UIInterfaceOrientationLandscapeRight = UIDeviceOrientationLandscapeLeft
要获取UIDeviceOrientation，请使用
[[UIDevice currentDevice] orientation]
要获取UIInterfaceOrientation，请使用
[[UIApplication sharedApplication] statusBarOrientation]
这篇关于Xcode:获得警告“来自枚举类型UIDeviceOrientation的隐式转换"；的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！