UWP视频导入

Question

我正在尝试将视频导入UWP画布。我有这个代码成功导入图片：private async void AddImageButton_Click（object sender，RoutedEventArgs e）{Image MyImage = new Image（）;

        var picker = new FileOpenPicker();
        picker.SuggestedStartLocation = PickerLocationId.PicturesLibrary;
        picker.FileTypeFilter.Add(".jpg");
        picker.FileTypeFilter.Add(".png");

        StorageFile file = await picker.PickSingleFileAsync();

        if (file != null)
        {
            StorageApplicationPermissions.FutureAccessList.AddOrReplace("PickedFolderToken", file);
          //  var files = await file.GetFilesAsync();
            var bitmap = new BitmapImage();

            var stream = await file.OpenReadAsync();

            // AddHandler(, new ExceptionRoutedEventHandler(Bitmap_ImageFailed), true);
            bitmap.ImageFailed += Bitmap_ImageFailed;
            await bitmap.SetSourceAsync(stream);
            MyImage.Source = bitmap;

            AddHandler(ManipulationStartedEvent, new ManipulationStartedEventHandler(Image_ManipulationStarted), true);
            AddHandler(ManipulationDeltaEvent, new ManipulationDeltaEventHandler(Image_ManipulationDelta), true);
            AddHandler(ManipulationCompletedEvent, new ManipulationCompletedEventHandler(Image_ManipulationCompleted), true);

            ManipulationMode = ManipulationModes.All;
            MyImage.RenderTransform = ImageTransforms;


            parentCanvas.Children.Add(MyImage);
        }

    }

我尝试将其修改为导入视频，但在将位图转换为MediaPlayerElement时卡住了。有什么建议？

谢谢！

Answer 1

根据您上面的将图像添加到Canvas的代码，您可以尝试以下代码将MediaPlayerElement添加到Canvas并使用FileOpenPicker选择媒体文件作为MediaPlayerElement的源。您可以进行一些修改以满足您的要求。

private async void AddMediaPlayerElementButton_Click_1(object sender, RoutedEventArgs e)
{
    var picker = new FileOpenPicker();
    picker.SuggestedStartLocation = PickerLocationId.PicturesLibrary;
    picker.FileTypeFilter.Add(".mp4");
    StorageFile file = await picker.PickSingleFileAsync();
    MediaPlayerElement mediaPlayer = new MediaPlayerElement() { AreTransportControlsEnabled = true };
    if (file != null)
    {
        mediaPlayer.Source = MediaSource.CreateFromStorageFile(file);
    }
    parentCanvas.Children.Add(mediaPlayer);
}