在iPad上确定UIInterfaceOrientation [英] Determine UIInterfaceOrientation on iPad

问题描述

在这种情况下我不需要指定方向，我只需要检测它，但我遇到了麻烦。我有条件代码，只能在肖像中工作，如果设备在横向，我需要做其他事情。由于deviceOrientation不一定与interfaceOrientation相同，我无法想出一种测试纵向模式的方法。

I don't need to specify the orientation in this case, I just need to detect it, but I'm having trouble. I have conditional code that should only work in portrait, and if the device is in landscape I need to do something else. Since the deviceOrientation is not necessarily the same as the interfaceOrientation, I can't come up with a way to test for portrait mode.

我在Google上找到的大多数教程都是方法强迫风景或做某种旋转。我唯一想做的就是确定方向是什么。这是我的代码，它不起作用：

Most tutorials I find on Google are ways to force landscape or do some sort of rotation. The only thing I want to do is just determine what the orientation is. Here is my code, which is not working:

-(void)viewDidLoad {
    [super viewDidLoad];
    //currentOrientation is declared as UIInterfaceOrientation currentOrientation
    currentOrientation = [[UIApplication sharedApplication] statusBarOrientation];
NSLog(@"%@",currentOrientation);  // == NULL
}

我需要确定interfaceOrientation和program的值有条件的。谢谢你的帮助！

I need to determine the value of the interfaceOrientation and program conditionally. Thanks for your help!

推荐答案

你知道 interfaceOrientation 属性吗？ UIViewController 类？

- (void) viewDidLoad {
    [super viewDidLoad];
    BOOL isPortrait = UIDeviceOrientationIsPortrait(self.interfaceOrientation);
    // now do whatever you need
}

或者你在< a href =https://developer.apple.com/documentation/uikit/uidevice/1620053-orientation?language=objc\"rel =nofollow noreferrer> [[UIDevice currentDevice] orientation] ？

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