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

user_8783685 0
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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.

xamarin.forms notimplementedexception
3 Answers

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).

user_102169820

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

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user_9342650

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
user_73088960
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