iOS Swift3.0实现视频播放横竖屏切换效果

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iOS Swift3.0实现视频播放横竖屏切换效果

关键代码:添加检测设备方向的通知:

1. UIDevice.current.beginGeneratingDeviceOrientationNotifications()
   
2. // 检测设备方向
   
3. NotificationCenter.default.addObserver(self, selector: #selector(deviceOrientationChange), name: NSNotification.Name.UIDeviceOrientationDidChange, object: nil)

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设备方向改变调用:

1. /// 设备方向改变
   
2. @objc fileprivate func deviceOrientationChange() {
   
3.     // 获取当前设备方向
   
4.     let orientation = UIDevice.current.orientation
   
5.     // 如果手机硬件屏幕朝上或者屏幕朝下或者未知
   
6.     if orientation == UIDeviceOrientation.faceUp || orientation == UIDeviceOrientation.faceDown || orientation == UIDeviceOrientation.unknown {
   
7.         return
   
8.     }
   
9.     // UIDeviceOrientation 和 UIInterfaceOrientation 方向转换
   
10.     let interfaceOrientation: UIInterfaceOrientation = UIInterfaceOrientation(rawValue: orientation.rawValue)!
    
11.     switch interfaceOrientation {
    
12.     //屏幕竖直,home键在上面
    
13.     case UIInterfaceOrientation.portraitUpsideDown: break
    
14.     //屏幕竖直,home键在下面
    
15.     case UIInterfaceOrientation.portrait:
    
16.         toOrientation(orientation: UIInterfaceOrientation.portrait); break
    
17.     //屏幕水平,home键在左
    
18.     case UIInterfaceOrientation.landscapeLeft:
    
19.         toOrientation(orientation: UIInterfaceOrientation.landscapeLeft); break
    
20.     //屏幕水平,home键在右
    
21.     case UIInterfaceOrientation.landscapeRight:
    
22.         toOrientation(orientation: UIInterfaceOrientation.landscapeRight); break
    
23.     default:
    
24.         break
    
25.     }
    
26. }
    
27. 
    
28. /// 旋转
    
29. private func toOrientation(orientation: UIInterfaceOrientation) {
    
30. 
    
31.     //获取当前状态栏的方向
    
32.     let currentOrientation = UIApplication.shared.statusBarOrientation
    
33.     //如果当前的方向和要旋转的方向一致,直接return
    
34.     if currentOrientation == orientation {
    
35.         return
    
36.     }
    
37.     //根据要旋转的方向,重新布局
    
38.     if orientation != UIInterfaceOrientation.portrait {
    
39.         // 从全屏的一侧直接到全屏的另一侧不修改
    
40.         if currentOrientation == UIInterfaceOrientation.portrait {
    
41.             label.snp.makeConstraints({ (make) in
    
42.                 make.width.equalTo(UIScreen.main.bounds.size.height)
    
43.                 make.height.equalTo(UIScreen.main.bounds.size.width)
    
44.                 make.center.equalTo(UIApplication.shared.keyWindow!)
    
45.             })
    
46.         }
    
47.     }
    
48.     //状态栏旋转
    
49.     UIApplication.shared.setStatusBarOrientation(orientation, animated: false)
    
50.     UIView.beginAnimations(nil, context: nil)
    
51.     UIView.setAnimationDuration(0.35)
    
52.     label.transform = CGAffineTransform.identity
    
53.     label.transform = getTransformRotationAngle()
    
54.     UIView.commitAnimations()
    
55. }
    
56. 
    
57. /// 获取旋转角度
    
58. private func getTransformRotationAngle() -> CGAffineTransform {
    
59.     let interfaceOrientation = UIApplication.shared.statusBarOrientation
    
60.     if interfaceOrientation == UIInterfaceOrientation.portrait {
    
61.         return CGAffineTransform.identity
    
62.     } else if interfaceOrientation == UIInterfaceOrientation.landscapeLeft {
    
63.         return CGAffineTransform(rotationAngle: (CGFloat)(-M_PI_2))
    
64.     } else if (interfaceOrientation == UIInterfaceOrientation.landscapeRight) {
    
65.         return CGAffineTransform(rotationAngle: CGFloat(M_PI_2))
    
66.     }
    
67.     return CGAffineTransform.identity
    
68. }

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1. 在Info.plist中通添加View controller-based status bar appearance并设置值为NO(why)

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Demo效果:

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