Xamarin forms in app purchase
Hi
I am trying to implement in app purchase inside my Xamarin app using James NuGet Plugin.InAppBilling
https://jamesmontemagno.github.io/InAppBillingPlugin/GettingStarted.html
here is the code I am using
public async Task<bool> PurchaseSubscription(string productId, string payload)
{
var billing = CrossInAppBilling.Current;
try
{
var connected = await billing.ConnectAsync();
if (!connected)
{
//we are offline or can't connect, don't try to purchase
return false;
}
//check purchases
var purchase = await billing.PurchaseAsync(productId, ItemType.InAppPurchase);
//possibility that a null came through.
if (purchase == null)
{
//did not purchase
}
else
{
DependencyService.Get<IFileService>().WriteFile(productId+","+"true");
//purchased!
if (Device.RuntimePlatform == Device.Android)
{
await billing.AcknowledgePurchaseAsync(purchase.PurchaseToken);
// Must call AcknowledgePurchaseAsync else the purchase will be refunded
}
}
}
catch (InAppBillingPurchaseException purchaseEx)
{
//Billing Exception handle this based on the type
Debug.WriteLine("Error: " + purchaseEx);
}
catch (Exception ex)
{
//Something else has gone wrong, log it
Debug.WriteLine("Issue connecting: " + ex);
}
finally
{
await billing.DisconnectAsync();
}
return true;
}
But the app is throwing the following error on the 1st line : var billing = CrossInAppBilling.Current;
System.NotImplementedException: 'This functionality is not implemented in the portable version of this assembly. You should reference the NuGet package from your main application project in order to reference the platform-specific implementation.'
the nuget package Plugin.InAppBilling version 4.0.2 is installed in my App + App.Android and App.iOS
Can someone already implemented the in app purchase in Xamarin application please let me know if I missed some initializations or point me to an example that already implemented this functionality using Plugin.InAppBilling
Thx for your help
Best regards