我正在尝试使用属性UIDevice.currentDevice()。orientation,所以我有类似以下内容

UIDevice.currentDevice().beginGeneratingDeviceOrientationNotifications()
var orientation = UIDevice.currentDevice().orientation
switch orientation {
  case .Portrait:
    print("portrait")
    break
  case .PortraitUpsideDown: // Device oriented vertically, home button on the top
    print("upsidedown")
    magneticHeading += 180
    magneticHeading = magneticHeading % 360
    break
  case .LandscapeLeft: // Device oriented horizontally, home button on the right
    print("left")
    magneticHeading -= 90
    magneticHeading = magneticHeading % 360
    break
  case .LandscapeRight: // Device oriented horizontally, home button on the left
    print("right")
    magneticHeading += 90
    magneticHeading = magneticHeading % 360
    break
  case .FaceUp: // Device oriented flat, face up
    print("up")
    break
  case .FaceDown: // Device oriented flat, face down
    print("down")
    break
  case .Unknown:
    print("unknown")
    break
  default:
    print("default")
  }


我浏览了很多有关Stack Overflow的网页和问题,所有这些都使用beginGeneratingDeviceOrientationNotifications(),然后它将起作用。但是,我的代码根本无法工作。在switch语句中,无论我如何转动手机,它始终输入.Portrait。有人知道为什么吗?

另外,我实际上想要的是设备的方向,而不是我的ViewController的方向。我需要知道设备的放置方式,所以我需要使用currentDevice()。

我也尝试使用以下方法:

var interfaceOrientation = UIApplication.sharedApplication().statusBarOrientation
switch interfaceOrientation {
  case .Unknown:
    print("1")
  case .Portrait:
    print("2")
  case .PortraitUpsideDown:
    print("3")
  case .LandscapeLeft:
    print("4")
  case .LandscapeRight:
    print("5")


同样,无论我如何转动手机,都必须输入.Portrait

最佳答案

ios - UIDevice.currentDevice()。beginGeneratingDeviceOrientationNotifications()无法正常工作-LMLPHP

请检查您的xcode目标常规设置

10-08 12:11