How to properly receive Intent Extras on xamarin

Question

At the moment I'm using this tutorial for xamarin push notifications. It's working like a charm. My goal now is to handle the intents properly.

In my firebase messaging service, I create a notification and Put extras.

private void CreateNotification(Object e)
{
    try
    {
        string title = "";
        string body = "";

        var intent = new Intent(this, typeof(MainActivity));

        var i = e as Intent;
        var bundle = i.Extras;
        title = bundle.GetString("gcm.notification.title");
        body = bundle.GetString("gcm.notification.body");

        intent.PutExtra("view", "test");
        intent.PutExtra("title", title);
        intent.PutExtra("body", body);

        intent.AddFlags(ActivityFlags.ClearTop | ActivityFlags.SingleTop);
        var pendingIntent = PendingIntent.GetActivity(this, 0, intent, PendingIntentFlags.CancelCurrent | PendingIntentFlags.UpdateCurrent);
        Notification.Builder builder = new Notification.Builder(this);
        builder.SetSmallIcon(Resource.Drawable.icon_notification);
        builder.SetContentIntent(pendingIntent);
        builder.SetLargeIcon(BitmapFactory.DecodeResource(Resources, Resource.Drawable.icon_notification));
        builder.SetContentTitle("Test");
        builder.SetContentText(body);
        builder.SetDefaults(NotificationDefaults.Sound);
        builder.SetAutoCancel(true);
        NotificationManager notificationManager = (NotificationManager)GetSystemService(NotificationService);
        notificationManager.Notify(1, builder.Build());

    }
    catch (Exception ex)
    {
        Console.WriteLine(ex.Message);
    }
}

At the moment background push notifications are handled perfectly. I am able to run a simple line in the OnCreate method within MainActivity.cs

Intent.GetStringExtra("view");

this gets me the value that was set in CreateNotification.

The issue I come across is trying to get the intents on the foreground. This code resides on MainActivity.cs and is triggered when a push notification is clicked on the foreground.

protected async override void OnNewIntent(Intent intent)
{
    base.OnNewIntent(intent);

    if (Intent.Extras != null)
    {
        foreach (var key in Intent.Extras.KeySet())
        {
            var value = Intent.Extras.GetString(key);
            Log.Debug(TAG, "Key: {0} Value: {1}", key, value);
        }
    } 
}

Intent.Extras is always null, may I ask where abouts am I going wrong.

Answer 1

Maybe it's late for the answer, but it can help others.

The only error is that you are using Intent in place of intent (the passed argument)

if (Intent.Extras != null)

instead of

if (intent.Extras != null)

I fell into the same distraction.