System.NotImplementedException: 'This functionality is not implemented in the portable version of this assembly

Question

I have added Plugin.MediaManager and Plugin.MediaManager.Forms into my xamarin forms project for playing video.

CrossMediaManager.Current.Init(this);

when I am trying to add above code, it shows error (No overload for method Init();)

But getting below exception on android when running the project with below line of code.

CrossMediaManager.Current.Init();

System.NotImplementedException: 'This functionality is not implemented in the portable version of this assembly. You should reference the NuGet package from your main application project in order to reference the platform-specific implementation.'

IOS and UWP apps are working fine, only android project has this issue. Please help me to fix this.

Dyestuff

Have you install nuget package to Android project? – Nationalize

@PhatHuynh That packages are also showing on the android project. – Dyestuff

This link could be helpful: Current is not implemented – Nationalize

@PhatHuynh nothing helps me – Dyestuff

What is the version of your xamarin.forms in share project and specific platforms? – Danyel

Make sure that you update the version of Xamarin.Forms in Android project to 4.2.x . – Danyel

@LucasZhang-MSFT Yes it is 4.2.0.815419 – Dyestuff

Share you sample and I will check it . – Danyel

@LucasZhang-MSFT drive.google.com/open?id=1IVFwV0usob-eLfFmjPvPXXfpBTKGnc2g – Dyestuff

@LucasZhang-MSFT Fixed, the problem is with the target framework of android project. I set the compile using android version to Android 9.0 and problem solved. – Dyestuff

@LucasZhang-MSFT Can you please post it as your answer, I will accept it. – Dyestuff

Also can you please check why the following video link is not playing on the app. public string videourl = "player.vimeo.com/video/361089481"; I have added this link on the app. – Dyestuff

Answer 1

System.NotImplementedException: 'This functionality is not implemented in the portable version of this assembly. You should reference the NuGet package from your main application project in order to reference the platform-specific implementation.'

The above error often appears when the version of Android target is lower . Here is a similar issue that you can check https://github.com/martijn00/XamarinMediaManager/issues/437 .

In addition, in your case . You should make sure the format of video url is xxx.mp4 .The plugin couldn't support the url with such a format(player.vimeo.com/video/361089481).

Danyel

Is there any way of playing video without the video format? – Dyestuff

You can use a WebView and play the video in it.But it will be a little complex . – Danyel

Answer 2

I have updated the compile version to 10.0 and worked for me.

Android project referring to the net standard 2.0, So the init method was not taking a parameter. I looked into the plugin.mediamanager package folder for android dll and it was monoandroid10.0

Compelling

I had a similar issue (same error message, different packages). Updating my compile version to Android 13 solved the problem for me. 4 years later: thank you! – Schnabel

Answer 3

On previous versions of this plugin the init for Android is:

CrossMediaManager.Current.Init();

I just updated all packages in nuget including xamarin.forms, changed the Target framework to API 29 and changed in Android the

CrossMediaManager.Current.Init();

to

CrossMediaManager.Current.Init(this);

and works now.

• Plugin.MediaManager v0.9.7
• Plugin.MediaManager.Forms v0.9.7
• Xamarin.Forms v4.5.0.495

Removable