如何在iOS 6中以编程方式获取设备的当前方向？

Question

我开发了iOS应用程序并在iOS6设备上进行了测试.在测试时,我意识到我的应用程序没有按预期响应方向更改.

这是我的代码:

// Autorotation (iOS >= 6.0)
- (BOOL) shouldAutorotate
{
    return NO;
}

- (NSUInteger)supportedInterfaceOrientations
{
    return UIInterfaceOrientationMaskAll;
}

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
{
    return UIInterfaceOrientationMaskPortrait;
}

确切地说,我想知道iOS中的方向更改调用了哪些方法.

Answer 1

你可以尝试这个,可以帮助你:

如何在iOS 6中以编程方式更改设备方向

要么

Objective-C的:

UIDeviceOrientation orientation = [[UIDevice currentDevice] orientation]

迅速:

if UIDevice.current.orientation.isLandscape {
    // Landscape mode
} else {
    // Portrait mode
}

Answer 2

你可以尝试这个,这解决了你的问题.

UIInterfaceOrientation orientation = [UIApplication sharedApplication].statusBarOrientation;

请参阅以下链接App extension 获取设备当前方向(应用程序扩展)

Answer 3

也许是愚蠢但它有效(仅在ViewController中):

if (self.view.frame.size.width > self.view.frame.size.height) {
    NSLog(@"Hello Landscape");
}

Answer 4

  @property (nonatomic) UIDeviceOrientation m_CurrentOrientation ;

/*您需要在ViewDidload或ViewWillAppear*/中声明这些代码

- (void)viewDidLoad

   {

   [super viewDidLoad];

   [[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications];

   [[NSNotificationCenter defaultCenter] addObserver: self selector: @selector(deviceOrientationDidChange:) name: UIDeviceOrientationDidChangeNotification object: nil];
}

/*现在我们的设备会在我们更改设备方向时发出通知,因此您可以使用当前方向控制代码或程序*/

- (void)deviceOrientationDidChange:(NSNotification *)notification

 {

 //Obtaining the current device orientation

 /* Where self.m_CurrentOrientation is member variable in my class of type UIDeviceOrientation */

 self.m_CurrentOrientation = [[UIDevice currentDevice] orientation];

    // Do your Code using the current Orienation 

 }