ios - 为什么我的 CvVideoCamera 会覆盖整个 View ？

Question

因此我正在使用 CvVideo Camera:

- (void)viewDidLoad
{
    [super viewDidLoad];
    self.videoCamera = [[CvVideoCamera alloc] initWithParentView:imageView];
    self.videoCamera.delegate = self;
    self.videoCamera.defaultAVCaptureDevicePosition = AVCaptureDevicePositionBack;
    self.videoCamera.defaultAVCaptureSessionPreset = AVCaptureSessionPresetiFrame960x540;
    self.videoCamera.defaultAVCaptureVideoOrientation = AVCaptureVideoOrientationPortrait;
    self.videoCamera.defaultFPS = 30;
}

- (void)viewDidAppear:(BOOL)animated
{
    [super viewDidAppear:animated];
    [self.videoCamera start];
}

我的 Storyboard是这样的:

当 View 加载时，栏会短暂可见， View 的其余部分为白色。然后，当相机启动时，它会填满整个屏幕。为什么要这样做？

Answer 1

您尝试过不同的父 View 吗？

UIView *camView = [[UIView alloc] initWithFrame:CGRectMake(10, 10, 300, 400)];
[self.view addSubview:camView];
self.videoCamera = [[CvVideoCamera alloc] initWithParentView:camView];