https://github.com/bruno-garcia/xamarin-android-java-binding-repro

Repro for issue binding Android library with Xamarin
https://github.com/bruno-garcia/xamarin-android-java-binding-repro

android binding xamarin xamarin-android

Last synced: 23 days ago
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Repro for issue binding Android library with Xamarin

• Host: GitHub
• URL: https://github.com/bruno-garcia/xamarin-android-java-binding-repro
• Owner: bruno-garcia
• Created: 2019-12-09T05:46:32.000Z (about 5 years ago)
• Default Branch: master
• Last Pushed: 2019-12-09T05:47:02.000Z (about 5 years ago)
• Last Synced: 2024-12-13T02:30:21.518Z (about 1 month ago)
• Topics: android, binding, xamarin, xamarin-android
• Language: C#
• Homepage:
• Size: 413 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
Repro for binding Android library issue

![NotSupportedException](NotSupportedException.png "NotSupportedException")

The following Java code is not callable from C#:

```java

public static void doSomething(ConfigureOptions callback) {

        Options o = new Options();

        callback.configure(o);

    }

    public interface ConfigureOptions {

        void configure(Options options);

    }

}

```

It is callable from Java (with 1.8 compat) as:

```java

public static void callDoSomething() {

    doSomething(o -> Log.d(TAG, o.getValue()));

}

```

The C# binding calling out the Java method without parameters works just fine.

Calling the one with while passing the argument, fails:

```csharp

public class DotnetConfigureOptions :

    Java.Lang.Object,

    Com.Brunogarcia.Sample.IConfigureOptions

{

    public void Dispose() { }

    public IntPtr Handle { get; }

    public void Configure(Com.Brunogarcia.Sample.Options options) => 

        Log.Debug("dotnet", options.GetType().Name);

}

Com.Brunogarcia.Sample.CallDoSomething();

// Throws here:

Com.Brunogarcia.Sample.DoSomething(new DotnetConfigureOptions());

```