如何让iPhone面向当前？

Question

是否有一种特殊的方法来获得iPhone定位？我不需要它在度或弧度,我希望它返回一个UIInterfaceOrientation对象.我只需要它来构建if-else结构

if(currentOrientation==UIInterfaceOrientationPortrait ||currentOrientation==UIInterfaceOrientationPortraitUpsideDown) {
//Code
}  
if (currentOrientation==UIInterfaceOrientationLandscapeRight ||currentOrientation==UIInterfaceOrientationLandscapeLeft ) {
//Code
}

提前致谢!

Answer 1

这很可能是你想要的:

UIInterfaceOrientation interfaceOrientation = [[UIApplication sharedApplication] statusBarOrientation];

然后,您可以使用系统宏,如:

if (UIInterfaceOrientationIsPortrait(interfaceOrientation))
{

}

如果您想使用设备方向:

UIDeviceOrientation deviceOrientation = [[UIDevice currentDevice] orientation];

这包括像UIDeviceOrientationFaceUp和的枚举UIDeviceOrientationFaceDown

Answer 2

如其他答案中所述,您需要interfaceOrientation,而不是deviceOrientation.

最简单的方法是在UIViewController上使用属性interfaceOrientation.(所以大多数情况下,只是:self.interfaceOrientation会这样做).

可能的值是:

UIInterfaceOrientationPortrait           = UIDeviceOrientationPortrait,
UIInterfaceOrientationPortraitUpsideDown = UIDeviceOrientationPortraitUpsideDown,
UIInterfaceOrientationLandscapeLeft      = UIDeviceOrientationLandscapeRight,
UIInterfaceOrientationLandscapeRight     = UIDeviceOrientationLandscapeLeft

请记住:将设备向右转,即可进入左方向.