protected override void OnCreate(Bundle bundle)
{
base.OnCreate(bundle);
SetContentView(Resource.Layout.Main);
//Change this to true if you expect signed responses
// see: http://developer.android.com/guide/google/play/billing/billing_testing.html
//You may also need to deploy a signed package to test with as well. I was only able to get signed data with a signed package when testing
// see: http://docs.xamarin.com/android/tutorials/Preparing_Package_for_Android_Marketplace
Security.ExpectSignature = false;
ResponseHandler.register(new PurchaseObserver(this));
m_service = new BillingService();
m_service.setContext(this);
var pButton = FindViewById<Button>(Resource.Id.PurchaseButton);
pButton.Click += delegate { m_service.RequestPurchase("android.test.purchased"); };
var cButton = FindViewById<Button>(Resource.Id.CancelButton);
cButton.Click += delegate { m_service.RequestPurchase("android.test.canceled"); };
var rButton = FindViewById<Button>(Resource.Id.RefundButton);
rButton.Click += delegate { m_service.RequestPurchase("android.test.refunded"); };
var uButton = FindViewById<Button>(Resource.Id.UnavailableButton);
uButton.Click += delegate { m_service.RequestPurchase("android.test.item_unavailable"); };
}