ios - UIImagePickerController 和一个小的自定义预览

Question

我想使用一个UIImagePickerController非模态的，带有一个小方形预览。但是，我在预览的底部得到一个大的黑条，我无法摆脱它（见截图）。为什么它在那里，我怎样才能摆脱它？

代码：

- (void)viewDidLoad
{
    [super viewDidLoad];

    _imagePickerVC = [[UIImagePickerController alloc] init];
    _imagePickerVC.sourceType = UIImagePickerControllerSourceTypeCamera;
    _imagePickerVC.mediaTypes = @[ (NSString *)kUTTypeImage ];
    _imagePickerVC.wantsFullScreenLayout = NO;
    _imagePickerVC.delegate = (id)self;
    _imagePickerVC.navigationBarHidden = YES;
    _imagePickerVC.allowsEditing = NO;
    _imagePickerVC.showsCameraControls = NO;
    _imagePickerVC.cameraDevice = UIImagePickerControllerCameraDeviceFront;

    CGRect previewFrame = CGRectMake(0, 0, 150, 150);
    [_imagePickerVC.view setFrame:previewFrame];
    _imagePickerVC.view.autoresizesSubviews = YES;
    [self.view addSubview:_imagePickerVC.view];
    [_imagePickerVC viewWillAppear:YES];
    [_imagePickerVC viewDidAppear:YES];

}

Answer 1

这是对 UIImagePickerController 的误用。要制作自己的图像捕获界面，只需使用 AVFoundation。