Plugin.InAppBilling 8.0.5

.NET 8.0 This package targets .NET 8.0. The package is compatible with this framework or higher.
There is a newer prerelease version of this package available.
See the version list below for details. 
dotnet add package Plugin.InAppBilling --version 8.0.5                

                    
                

            
NuGet\Install-Package Plugin.InAppBilling -Version 8.0.5
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="Plugin.InAppBilling" Version="8.0.5" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
paket add Plugin.InAppBilling --version 8.0.5                

                    
                

            
#r "nuget: Plugin.InAppBilling, 8.0.5"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
// Install Plugin.InAppBilling as a Cake Addin
#addin nuget:?package=Plugin.InAppBilling&version=8.0.5

// Install Plugin.InAppBilling as a Cake Tool
#tool nuget:?package=Plugin.InAppBilling&version=8.0.5

In-App Billing Plugin for .NET MAUI and Windows

A simple In-App Purchase plugin for .NET MAUI and Windows to query item information, purchase items, restore items, and more.

Subscriptions are supported on iOS, Android, and Mac. Windows/UWP/WinUI 3 - does not support subscriptions at this time.

Important Version Information

  • v8 now supports .NET 8+ .NET MAUI and Windows Apps.
  • v7 now supports .NET 6+, .NET MAUI, UWP, and Xamarin/Xamarin.Forms projects
  • v7 is built against Android Billing Library 6.0
  • See migration guides below

Documentation

Get started by reading through the In-App Billing Plugin documentation.

NuGet

Platform Support

Platform Version
iOS for .NET 10+
macCatlyst for .NET All
tvOS for .NET 10.13.2
Android for .NET 21+
Windows App SDK (WinUI 3) 10+
.NET MAUI All

Created By: @JamesMontemagno

Version 8 Major Updates

  • Nice new re-write and re-implementation of APIs!
  • Built against .NET 8
  • Now using latest Android Billing v6.2.1

Version 7 Major Updates

  • Android: You must compile and target against Android 12 or higher (or Android 13 if v7.1)
  • Android: Now using Android Billing v6
  • Android: Major changes to Android product details, subscriptions, and more
  • Android: Please read through: https://developer.android.com/google/play/billing/migrate-gpblv6
  • Android: AcknowledgePurchaseAsync is now FinalizePurchaseAsync
  • All: There are now "Extras" for all products that give you back tons of info for each platform

If you receive an error in Google Play you may need to add this to your AndroidManifest.xml inside the application node:

<meta-data
  android:name="com.google.android.play.billingclient.version"
  android:value="6.1.0" />

If you are building against .NET 8 for Android you will need to add the following packages when using v7:

<ItemGroup Condition="'$(TargetFramework)' == 'net8.0-android'">  
        <PackageReference Include="Xamarin.AndroidX.Activity" Version="1.9.0.3" />   
        <PackageReference Include="Xamarin.AndroidX.Activity.Ktx" Version="1.9.0.3" />   
        <PackageReference Include="Xamarin.AndroidX.Collection" Version="1.4.0.5" />   
        <PackageReference Include="Xamarin.AndroidX.Collection.Ktx" Version="1.4.0.4" />   
        <PackageReference Include="Xamarin.GooglePlayServices.Base" Version="118.4.0" />  
</ItemGroup>

Pending Transactions:

  • If the result of PurchaseAsync is PurchaseState.PaymentPending, store the order details locally and inform the user that they will have access to the product when the payment completes
  • When the user starts the app (and/or visits a particular page), if the stored PurchaseState is PaymentPending, call GetPurchasesAsync and query the result for a purchase that matches the stored purchase.
  • If the PurchaseState for this purchase is still PaymentPending, show the same no-access message
  • If the PurchaseState is Purchased, call ConsumePurchaseAsync or AcknowledgePurchaseAsync, depending on the product type

To respond to pending transactions you can subscribe to a listener in your Android project startup:

// Connect to the service here
await CrossInAppBilling.Current.ConnectAsync();

// Check if there are pending orders, if so then subscribe
var purchases = await CrossInAppBilling.Current.GetPurchasesAsync(ItemType.InAppPurchase);

if (purchases?.Any(p => p.State == PurchaseState.PaymentPending) ?? false)
{
  Plugin.InAppBilling.InAppBillingImplementation.OnAndroidPurchasesUpdated = (billingResult, purchases) =>
  {
       // decide what you are going to do here with purchases
       // probably acknowledge
       // probably disconnect
  };
}
else
{
  await CrossInAppBilling.Current.DisconnectAsync();
}

If you do connect the IsConnected propety will be true and when you make purchases or check purchases again you should check ahead of time and not re-connect or disconnect if there are pending purchases

I highly recommend reading the entire Google Play Billing System docs.

Consumable vs Non-consumables on Android

On Android if you purchase anything you must first Acknowledge a purchase else it will be refunded. See the android documentation.

https://developer.android.com/google/play/billing/integrate#process https://developer.android.com/google/play/billing/integrate#pending

For consumables, the consumeAsync() method fulfills the acknowledgement requirement and indicates that your app has granted entitlement to the user. This method also enables your app to make the one-time product available for purchase again.

So, if you have a consumable... ConsumePurchaseAsync will also acknowledge it, if you have a non-consumable you will need to call AcknowledgePurchaseAsync.

Version 4+ Linker Settings

For linking if you are setting Link All you may need to add:

Android:
Plugin.InAppBilling;Xamarin.Android.Google.BillingClient
Android Progaurd Rules
-keep class com.android.billingclient.api.** { *; }
-keep class com.android.vending.billing.** { *; }
iOS:
--linkskip=Plugin.InAppBilling

License

The MIT License (MIT), see LICENSE file.

Want To Support This Project?

All I have ever asked is to be active by submitting bugs, features, and sending those pull requests down! Want to go further? Make sure to subscribe to my weekly development podcast Merge Conflict, where I talk all about awesome Xamarin goodies and you can optionally support the show by becoming a supporter on Patreon.

Product Compatible and additional computed target framework versions.
.NET net8.0 is compatible.  net8.0-android was computed.  net8.0-android34.0 is compatible.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-ios18.0 is compatible.  net8.0-maccatalyst was computed.  net8.0-maccatalyst18.0 is compatible.  net8.0-macos was computed.  net8.0-macos15.0 is compatible.  net8.0-tvos was computed.  net8.0-windows was computed.  net8.0-windows10.0.19041 is compatible. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages (6)

Showing the top 5 NuGet packages that depend on Plugin.InAppBilling:

Package Downloads
Zebble.Billing

Zebble IAP plugin for Xamarin.
VerticesEngine.Android

The Android port of the Cross Platform Vertices Engine.
VerticesEngine.iOS

The iOS port of the cross platform engine Vertices Engine
ContactManager.Core

Package Description
RedCorners.IAP

In App Purchase Plugins

GitHub repositories (2)

Showing the top 2 popular GitHub repositories that depend on Plugin.InAppBilling:

Repository Stars
jamesmontemagno/app-ac-islandtracker
Animal Crossing Island Tracking Mobile App
jamesmontemagno/MyStreamTimer
A cool app to count up or down that writes text to file for streamers
Version Downloads Last updated
9.0.2-beta 187 10/18/2024
9.0.1-beta 110 10/8/2024
9.0.0-beta 67 10/3/2024
8.0.5 854 10/18/2024
8.0.5-beta 87 10/18/2024
8.0.4 505 10/3/2024
8.0.3-beta 355 8/9/2024
8.0.2-beta 152 7/23/2024
8.0.1-beta 90 7/23/2024
8.0.0-beta 137 7/16/2024
7.1.3 11,163 7/15/2024
7.1.2 594 7/12/2024 7.1.2 is deprecated because it has critical bugs.
7.1.2-beta 211 5/11/2024
7.1.1-beta 3,109 12/13/2023
7.1.0 54,029 10/30/2023
7.1.0-beta 803 10/4/2023
7.0.5 25,168 8/4/2023
7.0.5-beta 2,972 6/4/2023
7.0.4-beta 613 6/3/2023
7.0.3-beta 621 6/3/2023
7.0.2-beta 627 6/1/2023
7.0.1-beta 643 6/1/2023
7.0.0-beta 646 5/31/2023
6.7.1-beta 663 5/12/2023
6.7.0 51,692 10/20/2022
6.6.2-beta 827 9/25/2022
6.6.1 4,061 9/22/2022
6.6.1-beta 680 9/22/2022
6.6.0-beta 657 9/22/2022
6.5.0-beta 726 9/20/2022
6.4.0-beta 671 9/1/2022
6.3.3-beta 2,626 5/11/2022
6.3.2-beta 713 3/7/2022
6.3.1-beta 642 2/15/2022
6.3.0-beta 163 2/13/2022
6.0.0-beta 1,401 1/14/2022
5.7.1-beta 681 5/12/2023
5.6.2-beta 783 9/25/2022
5.6.1 12,468 9/22/2022
5.6.1-beta 672 9/22/2022
5.6.0-beta 681 9/22/2022
5.5.0-beta 644 9/20/2022
5.4.0-beta 636 9/1/2022
5.3.3-beta 7,155 5/11/2022
5.3.2-beta 2,576 3/7/2022
5.3.1-beta 1,827 2/15/2022
5.3.0-beta 928 2/13/2022
5.2.0-beta 1,546 1/14/2022
5.1.1-beta 982 12/26/2021
5.1.0-beta 14,094 11/21/2021
5.0.1-beta 7,598 7/18/2021
5.0.0-beta 866 7/13/2021
4.4.0-beta 1,124 7/13/2021
4.2.0-beta 2,407 5/6/2021
4.1.2-beta 13,673 2/8/2021
4.1.1-beta 835 2/8/2021
4.1.0-beta 778 2/7/2021
4.0.2 93,001 1/2/2021
4.0.2-beta 835 1/2/2021
4.0.1-beta 5,139 11/4/2020
4.0.0-beta 6,935 8/20/2020
2.1.0.187-beta 20,562 2/4/2019
2.0.0.173-beta 3,262 9/29/2018
2.0.0 183,002 5/23/2018
1.4.1.157-beta 1,400 5/9/2018
1.2.5.145-beta 1,409 5/2/2018
1.2.5.144-beta 1,334 5/2/2018
1.2.5 3,863 5/1/2018
1.2.4.140-beta 1,358 4/24/2018
1.2.4.138-beta 1,508 4/2/2018
1.2.4.137-beta 1,322 3/29/2018
1.2.4.136-beta 1,447 3/27/2018
1.2.4.133-beta 1,855 3/17/2018
1.2.4.130-beta 1,501 2/26/2018
1.2.4.123-beta 1,542 1/26/2018
1.2.4.122-beta 1,371 1/25/2018
1.2.4.116-beta 1,647 1/10/2018
1.2.4.113-beta 1,454 1/6/2018
1.2.4.112-beta 1,615 12/20/2017
1.2.4.111-beta 1,412 12/20/2017
1.2.4 28,181 1/18/2018
1.2.3.107 24,778 10/11/2017
1.2.3.98-beta 1,520 10/9/2017
1.2.2 5,266 7/13/2017
1.2.2-beta72 1,405 7/9/2017
1.2.1 10,302 7/3/2017
1.2.0.54-alpha 1,437 7/1/2017
1.2.0.51-alpha 1,441 6/28/2017
1.2.0.50-alpha 3,584 6/21/2017
1.2.0.49-alpha 1,387 6/20/2017
1.1.0.46-beta 2,750 6/15/2017
1.1.0.35-beta 3,518 4/18/2017
1.1.0.34-beta 2,833 3/23/2017
1.1.0.33-beta 1,322 3/23/2017
1.1.0.32-beta 1,379 3/22/2017
1.1.0.23-beta 1,931 2/10/2017
1.1.0.15-beta 1,433 2/6/2017
1.1.0.9-beta 1,466 1/23/2017
1.1.0.3-beta 1,317 1/21/2017
1.1.0.2-beta 1,341 1/21/2017
1.0.0.31-beta 1,339 1/16/2017
1.0.0.30-beta 1,408 1/15/2017
1.0.0.27-beta 1,323 1/14/2017

See: https://github.com/jamesmontemagno/InAppBillingPlugin