jsexport.cs

public void JSExportTest ()
{
	var webView = new UIWebView ();
	var context = (JSContext) webView.ValueForKeyPath ((NSString) "documentView.webView.mainFrame.javaScriptContext");
	context.ExceptionHandler = (JSContext context2, JSValue exception) => 
	{
		Console.WriteLine ("JS exception: {0}", exception);
	};
	var obj = new MyJavaExporter ();
	context [(NSString) "obj"] = JSValue.From (obj, context);
	context.EvaluateScript ("obj.myFunc ();");
}

[Protocol ()]
interface IMyJavaExporter : IJSExport {
	[Export ("myFunc")]
	void MyFunc ();
}

class MyJavaExporter : NSObject, IMyJavaExporter
{
	public void MyFunc ()
	{
		Console.WriteLine ("Called!");
	}
}