自动布局指南：带有自定义覆盖的 UIImagePickerController 不会旋转

Question

我有一个带有自定义叠加层的 UIImagePickerController。在叠加层的 nib 文件中，我为两个不同的大小设置了 UI 约束 classes wc hR 纵向和 wC hC 横向。每个约束都安装了正确的大小 class。

但是，当我转动相机风景时它不会旋转。我这样设置 UIImagePickerController：

- (void)viewDidAppear:(BOOL)animated
{

    [super viewDidAppear:animated];


    _activityIndicator = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];

    if([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])
    {
        ipc.sourceType = UIImagePickerControllerSourceTypeCamera;
        ipc.showsCameraControls = NO;

        [[NSBundle mainBundle] loadNibNamed:@"SnapItCameraView" owner:self options:nil];
        self.overlayView.frame = ipc.cameraOverlayView.frame;
        ipc.cameraOverlayView = self.overlayView;
        self.overlayView = nil;

        CGSize screenBounds = [UIScreen mainScreen].bounds.size;

        CGFloat cameraAspectRatio = 4.0f/3.0f;

        CGFloat camViewHeight = screenBounds.width * cameraAspectRatio;
        CGFloat scale = screenBounds.height / camViewHeight;
        ipc.cameraViewTransform = CGAffineTransformMakeTranslation(0, (screenBounds.height - camViewHeight) / 2.0);
        ipc.cameraViewTransform = CGAffineTransformScale(ipc.cameraViewTransform, scale, scale);

        ipc.showsCameraControls = NO;
        ipc.tabBarController.tabBar.hidden = YES;
        ipc.allowsEditing = YES;
        [ipc setAllowsEditing:YES];


    }else{
        ipc.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
    }

    [self presentViewController:ipc animated:YES completion:nil];
    [_activityIndicator stopAnimating];

}

Answer 1

来自 Apple 的文档：

Important

The UIImagePickerController class supports portrait mode only.

参考：https://developer.apple.com/documentation/uikit/uiimagepickercontroller?language=objc

自动布局指南：带有自定义覆盖的 UIImagePickerController 不会旋转

Auto-Layout Guide: UIImagePickerController W/ Custom Overlay Won't Rotate

objective-c

rotation

uiimagepickercontroller

ios