Plugin.MediaManager.Forms：视频不会从 Xamarin.Forms 应用程序数据目录播放

Question

I'm trying to play a video on a Xamarin app using the Plugin.MediaManager.Forms nuget package. The video is stored in the Xamarin App Data Directory so try to play the video by building the path to the folder with the filename.

var path = Path.Combine(Xamarin.Essentials.FileSystem.AppDataDirectory, filename);
await CrossMediaManager.Current.Play(path);

Unfortunately I just get a blank screen when I call Play(path) .

I've also tried using FileInfo however I still just get a blank screen.

var path = Path.Combine(Xamarin.Essentials.FileSystem.AppDataDirectory, filename);
FileInfo fileInfo = new FileInfo(path);
await CrossMediaManager.Current.Play(fileInfo);

I've tested on both Android, UWP & iOS platforms and see the same result.

Answer 1

According to your description, the Xamarin.Essentials.FileSystem.AppDataDirectory path is /data/user/0/Package name/files/ , I add one.mp4 file in files folder, then the.mp4 video play successfully.

So please confirm that wheather you have mp4 file.

 <StackLayout>
        <Button
            x:Name="btnplay"
            Clicked="btnplay_Clicked"
            Text="play video" />
        <video:VideoView HeightRequest="300" WidthRequest="200" />
    </StackLayout>

 private async void btnplay_Clicked(object sender, EventArgs e)
    {

        string filename = "minions.mp4";
        var path = Path.Combine(Xamarin.Essentials.FileSystem.AppDataDirectory, filename);

        await CrossMediaManager.Current.Play(path);
    }

You can see that there is one minions.mp4 file in files folder, then path is /data/user/0/demo.demo3/files/minions.mp4