Monodroid Javascript Call-back

Question

I\'m trying to use monodroid with webkit to create an app. I am having a problem with letting the html page call a javascript method, which would be an interface to a method

Answer 1

// C#
// !!!
using Java.Interop; // add link to Mono.Android.Export

public class Activity1 : Activity
{
    const string html = @"
    
    
    
This is a paragraph.
    Click Me!
    
    ";

    class Foo : Java.Lang.Object // do not need Java.Lang.IRunnable 
    {
        Context context;

        public Foo (Context context)
        {
            this.context = context;
        }

        [Export] // !!! do not work without Export
        [JavascriptInterface] // This is also needed in API 17+
        public string SomeMethod(string param)
        {
            Toast.MakeText (context, "This is a Toast from C#!" + param, ToastLength.Short).Show ();
        }
    }

    protected override void OnCreate (Bundle bundle)
    {
        base.OnCreate (bundle);

        SetContentView (Resource.Layout.Main);

        WebView view = FindViewById (Resource.Id.web);
        view.Settings.JavaScriptEnabled = true;

        view.AddJavascriptInterface (new Foo (this), "Foo");
        view.LoadData (html, "text/html", null);
    }
}