iPhone应用程序 - 在横向模式下显示AVFoundation视频

Question

我正在使用Apple的AVCam示例App.

此示例使用AVFoundation以在视图上显示视频.

我试图从AVCam制作一个没有运气的风景应用程序.

当屏幕方向改变时,视频在视图上旋转显示.有办法解决这个问题吗？

Answer 1

在创建预览图层时:

captureVideoPreviewLayer.orientation = UIInterfaceOrientationLandscapeLeft;

以及管理轮换的方法:

-(void)willAnimateRotationToInterfaceOrientation:
        (UIInterfaceOrientation)toInterfaceOrientation 
        duration:(NSTimeInterval)duration {

  [CATransaction begin];
  if (toInterfaceOrientation==UIInterfaceOrientationLandscapeLeft){
    captureVideoPreviewLayer.orientation = UIInterfaceOrientationLandscapeLeft;
  } else {        
    captureVideoPreviewLayer.orientation = UIInterfaceOrientationLandscapeLeft;
  }

 [CATransaction commit];
 [super willAnimateRotationToInterfaceOrientation:toInterfaceOrientation duration:duration];
}

-(BOOL)shouldAutorotateToInterfaceOrientation:
        (UIInterfaceOrientation)interfaceOrientation {

  [[UIApplication sharedApplication] setStatusBarOrientation:UIInterfaceOrientationLandscapeLeft animated:NO];

  return (interfaceOrientation == UIInterfaceOrientationLandscapeLeft);
}

这对我有用.