[Bug] MediaElement for UWP is broken in Xamarin Community Toolkit 1.1

[coquilanka]

Description

[Bug] MediaElement for UWP is broken in Xamarin Community Toolkit 1.1

Steps to Reproduce

1. Try the below MainPage.xaml file that contains a MediaElement Tag (set the UWP project as startup, and start debugging). You will only get the "red background" set in "BackgroundColor" in XAML below, but not the player interface, and playback does not work

<xct:MediaElement Source="https://sec.ch9.ms/ch9/5d93/a1eab4bf-3288-4faf-81c4-294402a85d93/XamarinShow_mid.mp4"
ShowsPlaybackControls="True" BackgroundColor="Red"/>

(Xamarin Forms version 5.0.0.2012)
(Xamarin Community Toolkit version 1.1.0)

Expected Behavior

Playback of Video to start

Actual Behavior

You will only get the "red background" shown in the image, but not the player interface, and playback does not work (note that the background color of MediaElement is set to red in the above XAML )

Basic Information

• Version with issue: 1.1.0
• Last known good version: 1.0.3
• IDE: Visual Studio Community 2019
• Platform Target Frameworks:
  • UWP: 19041

Workaround

Downgrade to 1.0.3

Reproduction imagery

[jfversluis]

I've tried it with the sample app and that seems to work fine.

Could you maybe add a little reproduction project to show the issue? That would really help tracking this down. Thanks!

[coquilanka]

I've tried it with the sample app and that seems to work fine.

Could you maybe add a little reproduction project to show the issue? That would really help tracking this down. Thanks!

Thanks a lot for your help Versluis. After patient investigation, I think I found the origin of the problem. It does not seem to be directly related to the MediaElement

The problem seems to be in the combination of the Xamarin Community Toolkit version being used and the "Targeting Min Version" setting in the properties of the UWP project in the Xamarin Solution
'
If I use Xamarin Community Toolkit 1.0.3 with "Min Targeting Version" setting on Windows 10 Version 1809 Build 17763 or above, the UWP project with the Xamarin Community Toolkit MediaElement renders correctly on screen

If I use Xamarin Community Toolkit 1.1.0 with "Min Targeting Version" setting on Windows 10 Version 2004 Build 19041, the UWP project with the Xamarin Community Toolkit MediaElement renders correctly on screen.

Any other combination fails as per the image previously enclosed in this thread.

(my Windows 10 operating system is currently Build 19041)

May I please ask if this is a bug or on the contrary it is expected behavior? I took the opportunity to read about "Targeting Versions" and it sounds that even if my "Min Target Version" was set to 17763 (I think), the problem should not have occurred with XCT 1.1.0.

Your insight, if possible for you, would be very highly appreciated. Thanks!

[JKennedy24]

I can also replicate this issue with V1.1.0 of community toolkit.

Downgrading to V1.0.3 fixed the issue

In terms of my target version and min versions are as follows:

Target Version: Windows 10 Version 2004 (10.0 build 19041)
Min Version: Windows 10 Version 1809 (10.0 build 17763)

[pictos]

@JKennedy24 just for science, could you upgrade your min. version to build 19041 and see if that works?

[coquilanka]

@JKennedy24 just for science, could you upgrade your min. version to build 19041 and see if that works?

@pictos: as per my original message, yes XCT 1.1.0 works OK if you set the min version to build 19041. In my tests, as per my original report:

"If I use Xamarin Community Toolkit 1.0.3 with "Min Targeting Version" setting on Windows 10 Version 1809 Build 17763 or above, the UWP project with the Xamarin Community Toolkit MediaElement renders correctly on screen
If I use Xamarin Community Toolkit 1.1.0 with "Min Targeting Version" setting on Windows 10 Version 2004 Build 19041, the UWP project with the Xamarin Community Toolkit MediaElement renders correctly on screen.
Any other combination fails as per the image previously enclosed in this thread."

Thanks!

[pictos]

@coquilanka thanks, didn't see all comments, sorry for that hehe

[jfversluis]

@coquilanka and all, would you be able to test this NuGet maybe: https://dev.azure.com/xamarin/public/_build/results?buildId=39270&view=artifacts&pathAsName=false&type=publishedArtifacts

If you don't know how to test one from an artifact, this should help: https://blog.verslu.is/xamarin/xamarin-forms-xamarin/test-xamarin-forms-bugfixes/

Wondering if that fixes it for all scenarios

[Sergtek]

@coquilanka and all, would you be able to test this NuGet maybe: https://dev.azure.com/xamarin/public/_build/results?buildId=39270&view=artifacts&pathAsName=false&type=publishedArtifacts

If you don't know how to test one from an artifact, this should help: https://blog.verslu.is/xamarin/xamarin-forms-xamarin/test-xamarin-forms-bugfixes/

Wondering if that fixes it for all scenarios

I just tested the nuget and the MediaElement is still not working in UWP. With the following configuration:
Target version: 1903
Min version: 1809