ios - 无法使用 iOS 默认相机应用程序捕获视频。 Xamarin.iOS

Question

我正在尝试启动用于视频录制的默认 iOS 相机应用程序，但它不起作用。

每当我启动应用程序时，它就会崩溃，并且不会显示任何错误日志或任何其他错误消息。

如果我将 imagePicker.CameraCaptureMode 设置为 UIImagePickerControllerCameraCaptureMode.Photo，则以下代码可以完美运行。

var imagePicker = new UIImagePickerController();
imagePicker.SourceType = UIImagePickerControllerSourceType.Camera;
imagePicker.CameraCaptureMode = UIImagePickerControllerCameraCaptureMode.Video;
var imagePickerDelegate = new ImagePickerDelegate(this);
imagePicker.Delegate = imagePickerDelegate;
NavigationController.PresentModalViewController(imagePicker, true);

提前致谢

Answer 1

我通过这样做让它工作:

var imagePicker = new UIImagePickerController();
imagePicker.SourceType = UIImagePickerControllerSourceType.Camera;
imagePicker.MediaTypes = new string[]{ UTType.Movie }; // ADD this
var imagePickerDelegate = new ImagePickerDelegate(this);
imagePicker.Delegate = imagePickerDelegate;
NavigationController.PresentModalViewController(imagePicker, true);

你也可以像这样设置你的委托(delegate)调用:

    imagePicker.FinishedPickingMedia += Handle_FinishedPickingMedia;
    imagePicker.Canceled += Handle_Canceled;

然后创建这些方法:

    protected void Handle_FinishedPickingMedia(object sender, UIImagePickerMediaPickedEventArgs e)
    {
        //code to handle picking media
    }

    void Handle_Canceled(object sender, EventArgs e)
    {
        imagePicker.DismissViewController(true, null);
    }

更新

在 iOS 10 中，您需要添加权限并在 info.plist

中提供有关请求权限原因的说明

看这里:

iOS 10 - Changes in asking permissions of Camera, microphone and Photo Library causing application to crash