AVCaptureVideoPreviewLayer вращение не работает

Question

, когда я поворачиваю свое устройство из ландшафта влево или вправо или наоборот, AVCaptureVideoPreviewLayer поворачивает вверх дном. он отлично работает, когда я вращаю свое устройство от портретного до ландшафтного режима. это мой код

{ override func viewWillLayoutSubviews() { 
     let orientation: UIDeviceOrientation = UIDevice.currentDevice().orientation 
     if(buttonsview.isDescendantOfView(self.view)){ 
      buttonsview.removeFromSuperview() 
     }else{ 

     } 
     switch (orientation) 
     { 
     case .Portrait: 
      previewLayer?.connection.videoOrientation = AVCaptureVideoOrientation.Portrait 
      previewLayer.frame = self.view.bounds 
      var frame = buttonsview.frame 
      frame.size.width = 320 
      frame.size.height = 50 
      let totalWidth : CGFloat = self.view.bounds.size.width 
      var x:CGFloat = 0.0; 
      if(totalWidth>320) 
      { 
       x = (totalWidth-320.0)/2.0 
      } 
      frame.origin.x = x 
      frame.origin.y = self.view.bounds.size.height-50 
      buttonsview.frame = frame 
      buttonsview.layoutSubviews() 
      view.addSubview(buttonsview) 
      self.activityView.center = self.view.center 
      break 
     case .LandscapeRight: 
      previewLayer?.connection.videoOrientation = AVCaptureVideoOrientation.LandscapeLeft 
      previewLayer.frame = self.view.bounds 
      var frame = buttonsview.frame 
      frame.size.width = 320 
      frame.size.height = 50 
      let totalWidth : CGFloat = self.view.bounds.size.width 
      var x:CGFloat = 0.0; 
      if(totalWidth>320) 
      { 
       x = (totalWidth-320.0)/2.0 
      } 
      frame.origin.x = x 
      frame.origin.y = self.view.bounds.size.height-50 
      buttonsview.frame = frame 
      view.addSubview(buttonsview) 
      self.activityView.center = self.view.center 
      break 
     case .LandscapeLeft: 
      previewLayer?.connection.videoOrientation = AVCaptureVideoOrientation.LandscapeRight 
      previewLayer.frame = self.view.bounds 
      var frame = buttonsview.frame 
      frame.size.width = 320 
      frame.size.height = 50 
      let totalWidth : CGFloat = self.view.bounds.size.width 
      var x:CGFloat = 0.0; 
      if(totalWidth>320) 
      { 
       x = (totalWidth-320.0)/2.0 
      } 
      frame.origin.x = x 
      frame.origin.y = self.view.bounds.size.height-50 
      buttonsview.frame = frame 
      view.addSubview(buttonsview) 
      self.activityView.center = self.view.center 
      break 

     case .PortraitUpsideDown: 
      previewLayer?.connection.videoOrientation = AVCaptureVideoOrientation.PortraitUpsideDown 
      previewLayer.frame = self.view.bounds 
      var frame = buttonsview.frame 
      frame.size.width = 320 
      frame.size.height = 50 
      let totalWidth : CGFloat = self.view.bounds.size.width 
      var x:CGFloat = 0.0; 
      if(totalWidth>320) 
      { 
       x = (totalWidth-320.0)/2.0 
      } 
      frame.origin.x = x 
      frame.origin.y = self.view.bounds.size.height-50 
      buttonsview.frame = frame 
      buttonsview.layoutSubviews() 
      view.addSubview(buttonsview) 
      self.activityView.center = self.view.center 
      break 



     case .Unknown: 
      previewLayer?.connection.videoOrientation = AVCaptureVideoOrientation.LandscapeLeft 
      previewLayer.frame = self.view.bounds 
      var frame = buttonsview.frame 
      frame.size.width = 320 
      frame.size.height = 50 
      let totalWidth : CGFloat = self.view.bounds.size.width 
      var x:CGFloat = 0.0; 
      if(totalWidth>320) 
      { 
       x = (totalWidth-320.0)/2.0 
      } 
      frame.origin.x = x 
      frame.origin.y = self.view.bounds.size.height-50 
      buttonsview.frame = frame 
      buttonsview.layoutSubviews() 
      view.addSubview(buttonsview) 
      self.activityView.center = self.view.center 
      break 

     default: 
      previewLayer?.connection.videoOrientation = AVCaptureVideoOrientation.Portrait 
      previewLayer.frame = self.view.bounds 
      var frame = buttonsview.frame 
      frame.size.width = 320 
      frame.size.height = 50 
      let totalWidth : CGFloat = self.view.bounds.size.width 
      var x:CGFloat = 0.0; 
      if(totalWidth>320) 
      { 
       x = (totalWidth-320.0)/2.0 
      } 
      frame.origin.x = x 
      frame.origin.y = self.view.bounds.size.height-50 
      buttonsview.frame = frame 
      buttonsview.layoutSubviews() 
      view.addSubview(buttonsview) 
      self.activityView.center = self.view.center 
      break 
     } 
    } 
} 

Answer 1

, наконец, сделал это.

override func viewDidLayoutSubviews() { 
     var newOrientation: AVCaptureVideoOrientation 
     var orientation: UIDeviceOrientation = UIDevice.currentDevice().orientation 
     switch (orientation) { 
     case .Portrait: 
      newOrientation = .Portrait; 
      var frame = buttonsview.frame 
      frame.size.width = 320 
      frame.size.height = 50 
      let totalWidth : CGFloat = self.view.bounds.size.width 
      var x:CGFloat = 0.0; 
      if(totalWidth>320) 
      { 
       x = (totalWidth-320.0)/2.0 
      } 
      frame.origin.x = x 
      frame.origin.y = self.view.bounds.size.height-50 
      buttonsview.frame = frame 
      buttonsview.layoutSubviews() 
      view.addSubview(buttonsview) 
      self.activityView.center = self.view.center 
      break; 

     case .PortraitUpsideDown: 
      newOrientation = .PortraitUpsideDown; 
      var frame = buttonsview.frame 
      frame.size.width = 320 
      frame.size.height = 50 
      let totalWidth : CGFloat = self.view.bounds.size.width 
      var x:CGFloat = 0.0; 
      if(totalWidth>320) 
      { 
       x = (totalWidth-320.0)/2.0 
      } 
      frame.origin.x = x 
      frame.origin.y = self.view.bounds.size.height-50 
      buttonsview.frame = frame 
      buttonsview.layoutSubviews() 
      view.addSubview(buttonsview) 
      self.activityView.center = self.view.center 
      break 

     case .LandscapeLeft: 
      newOrientation = .LandscapeRight; 
      var frame = buttonsview.frame 
      frame.size.width = 320 
      frame.size.height = 50 
      let totalWidth : CGFloat = self.view.bounds.size.width 
      var x:CGFloat = 0.0; 
      if(totalWidth>320) 
      { 
       x = (totalWidth-320.0)/2.0 
      } 
      frame.origin.x = x 
      frame.origin.y = self.view.bounds.size.height-50 
      buttonsview.frame = frame 
      view.addSubview(buttonsview) 
      self.activityView.center = self.view.center 
      break 

     case .LandscapeRight: 
      newOrientation = .LandscapeLeft; 

      var frame = buttonsview.frame 
      frame.size.width = 320 
      frame.size.height = 50 
      let totalWidth : CGFloat = self.view.bounds.size.width 
      var x:CGFloat = 0.0; 
      if(totalWidth>320) 
      { 
       x = (totalWidth-320.0)/2.0 
      } 
      frame.origin.x = x 
      frame.origin.y = self.view.bounds.size.height-50 
      buttonsview.frame = frame 
      view.addSubview(buttonsview) 
      self.activityView.center = self.view.center 
      break; 
     default: 
      newOrientation = .Portrait; 
      var frame = buttonsview.frame 
      frame.size.width = 320 
      frame.size.height = 50 
      let totalWidth : CGFloat = self.view.bounds.size.width 
      var x:CGFloat = 0.0; 
      if(totalWidth>320) 
      { 
       x = (totalWidth-320.0)/2.0 
      } 
      frame.origin.x = x 
      frame.origin.y = self.view.bounds.size.height-50 
      buttonsview.frame = frame 
      buttonsview.layoutSubviews() 
      view.addSubview(buttonsview) 
      self.activityView.center = self.view.center 
      } 

     let newSize = self.view.bounds.size; 
     previewLayer.position = CGPointMake(0.5 * newSize.width, 0.5 * newSize.height); 
    } 

    override func willAnimateRotationToInterfaceOrientation(toInterfaceOrientation: UIInterfaceOrientation, duration: NSTimeInterval) { 
     CATransaction.begin() 
     CATransaction.setAnimationDuration(duration) 
     CATransaction.setAnimationTimingFunction(CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseInEaseOut)); 
     updatePreviewLayerForOrientation(toInterfaceOrientation); 
     CATransaction.commit(); 
    } 

    func updatePreviewLayerForOrientation(interfaceOrientation: UIInterfaceOrientation) 
    { 
     // Correct position of previewLayer 
     let newSize = view.bounds.size; 
     previewLayer.position = CGPointMake(0.5 * newSize.width, 0.5 * newSize.height); 
     var angle: Double! 
     // Rotate the previewLayer, in order to have camera picture right 
     switch interfaceOrientation { 
     case .Portrait: 
      angle = 0 


     case .LandscapeLeft: 
      angle = M_PI/2 
     case .LandscapeRight: 
      angle = -M_PI/2 
     default: // .PortraitUpsideDown 
      angle = M_PI 
     } 

     previewLayer.setAffineTransform(CGAffineTransformMakeRotation(CGFloat(angle))) 
    }