add maui sample

src/InAppBillingTests/InAppBillingMauiTest/App.xaml

@@ -0,0 +1,9 @@
+<?xml version = "1.0" encoding = "UTF-8" ?>
+<Application xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+             xmlns:local="clr-namespace:InAppBillingMauiTest"
+             x:Class="InAppBillingMauiTest.App">
+    <Application.Resources>
+        <ResourceDictionary Source="Resources/Styles.xaml" />
+    </Application.Resources>
+</Application>

src/InAppBillingTests/InAppBillingMauiTest/App.xaml.cs

@@ -0,0 +1,12 @@
+namespace InAppBillingMauiTest
+{
+    public partial class App : Application
+    {
+        public App()
+        {
+            InitializeComponent();
+
+            MainPage = new AppShell();
+        }
+    }
+}

src/InAppBillingTests/InAppBillingMauiTest/AppShell.xaml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<Shell
+    x:Class="InAppBillingMauiTest.AppShell"
+    xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
+    xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+    xmlns:local="clr-namespace:InAppBillingMauiTest"
+    Shell.FlyoutBehavior="Disabled">
+
+    <ShellContent
+        Title="Hello, World!"
+        ContentTemplate="{DataTemplate local:MainPage}"
+        Route="MainPage" />
+
+</Shell>

src/InAppBillingTests/InAppBillingMauiTest/AppShell.xaml.cs

@@ -0,0 +1,10 @@
+namespace InAppBillingMauiTest
+{
+    public partial class AppShell : Shell
+    {
+        public AppShell()
+        {
+            InitializeComponent();
+        }
+    }
+}

src/InAppBillingTests/InAppBillingMauiTest/InAppBillingMauiTest.csproj

@@ -0,0 +1,56 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+	<PropertyGroup>
+		<TargetFrameworks>net6.0-android;net6.0-ios;net6.0-maccatalyst</TargetFrameworks>
+		<TargetFrameworks Condition="$([MSBuild]::IsOSPlatform('windows')) and '$(MSBuildRuntimeType)' == 'Full'">$(TargetFrameworks);net6.0-windows10.0.19041</TargetFrameworks>
+		<OutputType>Exe</OutputType>
+		<RootNamespace>InAppBillingMauiTest</RootNamespace>
+		<UseMaui>true</UseMaui>
+		<SingleProject>true</SingleProject>
+		<ImplicitUsings>enable</ImplicitUsings>
+
+		<!-- Display name -->
+		<ApplicationTitle>InAppBillingMauiTest</ApplicationTitle>
+
+		<!-- App Identifier -->
+		<ApplicationId>com.companyname.inappbillingmauitest</ApplicationId>
+		<ApplicationId Condition="$(TargetFramework.Contains('-windows'))">8C7E9190-68F2-4D7E-BF0E-C1E8A260B4D5</ApplicationId>
+
+		<!-- Versions -->
+		<ApplicationDisplayVersion>1.0</ApplicationDisplayVersion>
+		<ApplicationVersion>1</ApplicationVersion>
+
+		<SupportedOSPlatformVersion Condition="'$(TargetFramework)' == 'net6.0-ios'">14.2</SupportedOSPlatformVersion>
+		<SupportedOSPlatformVersion Condition="'$(TargetFramework)' == 'net6.0-maccatalyst'">14.0</SupportedOSPlatformVersion>
+		<SupportedOSPlatformVersion Condition="'$(TargetFramework)' == 'net6.0-android'">21.0</SupportedOSPlatformVersion>
+		<SupportedOSPlatformVersion Condition="$(TargetFramework.Contains('-windows'))">10.0.17763.0</SupportedOSPlatformVersion>
+		<TargetPlatformMinVersion Condition="$(TargetFramework.Contains('-windows'))">10.0.17763.0</TargetPlatformMinVersion>
+	</PropertyGroup>
+
+	<ItemGroup>
+		<!-- App Icon -->
+		<MauiIcon Include="Resources\appicon.svg" ForegroundFile="Resources\appiconfg.svg" Color="#512BD4" />
+
+		<!-- Splash Screen -->
+		<MauiSplashScreen Include="Resources\appiconfg.svg" Color="#512BD4" BaseSize="128,128" />
+
+		<!-- Images -->
+		<MauiImage Include="Resources\Images\*" />
+		<MauiImage Update="Resources\Images\dotnet_bot.svg" BaseSize="168,208" />
+
+		<!-- Custom Fonts -->
+		<MauiFont Include="Resources\Fonts\*" />
+
+		<!-- Raw Assets (also remove the "Resources\Raw" prefix) -->
+		<MauiAsset Include="Resources\Raw\**" LogicalName="%(RecursiveDir)%(Filename)%(Extension)" />
+	</ItemGroup>
+
+  <ItemGroup Condition=" $(TargetFramework.Contains('-android')) ">
+    <PackageReference Include="Xamarin.Android.Google.BillingClient" Version="4.0.0" />
+  </ItemGroup>
+
+	<ItemGroup>
+	  <ProjectReference Include="..\..\Plugin.InAppBilling\Plugin.InAppBilling.csproj" />
+	</ItemGroup>
+
+</Project>

src/InAppBillingTests/InAppBillingMauiTest/MainPage.xaml

@@ -0,0 +1,45 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+             x:Class="InAppBillingMauiTest.MainPage">
+
+    <ScrollView>
+        <VerticalStackLayout Spacing="25" Padding="30">
+
+            <Label 
+                Text="Hello, World!"
+                SemanticProperties.HeadingLevel="Level1"
+                FontSize="32"
+                HorizontalOptions="Center" />
+
+            <Label 
+                Text="Welcome to .NET Multi-platform App UI"
+                SemanticProperties.HeadingLevel="Level1"
+                SemanticProperties.Description="Welcome to dot net Multi platform App U I"
+                FontSize="18"
+                HorizontalOptions="Center" />
+
+            <Label 
+                Text="Current count: 0"
+                FontSize="18"
+                FontAttributes="Bold"
+                x:Name="CounterLabel"
+                HorizontalOptions="Center" />
+
+            <Button 
+                Text="Click me"
+                FontAttributes="Bold"
+                SemanticProperties.Hint="Counts the number of times you click"
+                Clicked="OnCounterClicked"
+                HorizontalOptions="Center" />
+
+            <Image
+                Source="dotnet_bot.png"
+                SemanticProperties.Description="Cute dot net bot waving hi to you!"
+                WidthRequest="250"
+                HeightRequest="310"
+                HorizontalOptions="Center" />
+
+        </VerticalStackLayout>
+    </ScrollView>
+</ContentPage>

src/InAppBillingTests/InAppBillingMauiTest/MainPage.xaml.cs

@@ -0,0 +1,20 @@
+namespace InAppBillingMauiTest
+{
+    public partial class MainPage : ContentPage
+    {
+        int count = 0;
+
+        public MainPage()
+        {
+            InitializeComponent();
+        }
+
+        private void OnCounterClicked(object sender, EventArgs e)
+        {
+            count++;
+            CounterLabel.Text = $"Current count: {count}";
+
+            SemanticScreenReader.Announce(CounterLabel.Text);
+        }
+    }
+}

src/InAppBillingTests/InAppBillingMauiTest/MauiProgram.cs

@@ -0,0 +1,19 @@
+namespace InAppBillingMauiTest
+{
+    public static class MauiProgram
+    {
+        public static MauiApp CreateMauiApp()
+        {
+            var builder = MauiApp.CreateBuilder();
+            builder
+                .UseMauiApp<App>()
+                .ConfigureFonts(fonts =>
+                {
+                    fonts.AddFont("OpenSans-Regular.ttf", "OpenSansRegular");
+                    fonts.AddFont("OpenSans-Semibold.ttf", "OpenSansSemibold");
+                });
+
+            return builder.Build();
+        }
+    }
+}

src/InAppBillingTests/InAppBillingMauiTest/Platforms/Android/AndroidManifest.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+	<uses-sdk android:minSdkVersion="21" android:targetSdkVersion="31" />
+	<application android:allowBackup="true" android:icon="@mipmap/appicon" android:roundIcon="@mipmap/appicon_round" android:supportsRtl="true"></application>
+	<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+</manifest>

src/InAppBillingTests/InAppBillingMauiTest/Platforms/Android/MainActivity.cs

@@ -0,0 +1,11 @@
+using Android.App;
+using Android.Content.PM;
+using Android.OS;
+
+namespace InAppBillingMauiTest
+{
+    [Activity(Theme = "@style/Maui.SplashTheme", MainLauncher = true, ConfigurationChanges = ConfigChanges.ScreenSize | ConfigChanges.Orientation | ConfigChanges.UiMode | ConfigChanges.ScreenLayout | ConfigChanges.SmallestScreenSize | ConfigChanges.Density)]
+    public class MainActivity : MauiAppCompatActivity
+    {
+    }
+}

src/InAppBillingTests/InAppBillingMauiTest/Platforms/Android/MainApplication.cs

@@ -0,0 +1,16 @@
+using Android.App;
+using Android.Runtime;
+
+namespace InAppBillingMauiTest
+{
+    [Application]
+    public class MainApplication : MauiApplication
+    {
+        public MainApplication(IntPtr handle, JniHandleOwnership ownership)
+            : base(handle, ownership)
+        {
+        }
+
+        protected override MauiApp CreateMauiApp() => MauiProgram.CreateMauiApp();
+    }
+}

src/InAppBillingTests/InAppBillingMauiTest/Platforms/Android/Resources/values/colors.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="colorPrimary">#512BD4</color>
+    <color name="colorPrimaryDark">#2B0B98</color>
+    <color name="colorAccent">#2B0B98</color>
+</resources>

src/InAppBillingTests/InAppBillingMauiTest/Platforms/MacCatalyst/AppDelegate.cs

@@ -0,0 +1,10 @@
+using Foundation;
+
+namespace InAppBillingMauiTest
+{
+    [Register("AppDelegate")]
+    public class AppDelegate : MauiUIApplicationDelegate
+    {
+        protected override MauiApp CreateMauiApp() => MauiProgram.CreateMauiApp();
+    }
+}

src/InAppBillingTests/InAppBillingMauiTest/Platforms/MacCatalyst/Info.plist

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>UIDeviceFamily</key>
+	<array>
+		<integer>1</integer>
+		<integer>2</integer>
+	</array>
+	<key>UIRequiredDeviceCapabilities</key>
+	<array>
+		<string>arm64</string>
+	</array>
+	<key>UISupportedInterfaceOrientations</key>
+	<array>
+		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+	</array>
+	<key>UISupportedInterfaceOrientations~ipad</key>
+	<array>
+		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationPortraitUpsideDown</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+	</array>
+	<key>XSAppIconAssets</key>
+	<string>Assets.xcassets/appicon.appiconset</string>
+</dict>
+</plist>

src/InAppBillingTests/InAppBillingMauiTest/Platforms/MacCatalyst/Program.cs

@@ -0,0 +1,16 @@
+using ObjCRuntime;
+using UIKit;
+
+namespace InAppBillingMauiTest
+{
+    public class Program
+    {
+        // This is the main entry point of the application.
+        static void Main(string[] args)
+        {
+            // if you want to use a different Application Delegate class from "AppDelegate"
+            // you can specify it here.
+            UIApplication.Main(args, null, typeof(AppDelegate));
+        }
+    }
+}

src/InAppBillingTests/InAppBillingMauiTest/Platforms/Windows/App.xaml

@@ -0,0 +1,8 @@
+<maui:MauiWinUIApplication
+    x:Class="InAppBillingMauiTest.WinUI.App"
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:maui="using:Microsoft.Maui"
+    xmlns:local="using:InAppBillingMauiTest.WinUI">
+
+</maui:MauiWinUIApplication>

src/InAppBillingTests/InAppBillingMauiTest/Platforms/Windows/App.xaml.cs

@@ -0,0 +1,24 @@
+using Microsoft.UI.Xaml;
+
+// To learn more about WinUI, the WinUI project structure,
+// and more about our project templates, see: http://aka.ms/winui-project-info.
+
+namespace InAppBillingMauiTest.WinUI
+{
+    /// <summary>
+    /// Provides application-specific behavior to supplement the default Application class.
+    /// </summary>
+    public partial class App : MauiWinUIApplication
+    {
+        /// <summary>
+        /// Initializes the singleton application object.  This is the first line of authored code
+        /// executed, and as such is the logical equivalent of main() or WinMain().
+        /// </summary>
+        public App()
+        {
+            this.InitializeComponent();
+        }
+
+        protected override MauiApp CreateMauiApp() => MauiProgram.CreateMauiApp();
+    }
+}

src/InAppBillingTests/InAppBillingMauiTest/Platforms/Windows/Package.appxmanifest

@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Package
+  xmlns="http://schemas.microsoft.com/appx/manifest/foundation/windows10"
+  xmlns:uap="http://schemas.microsoft.com/appx/manifest/uap/windows10"
+  xmlns:rescap="http://schemas.microsoft.com/appx/manifest/foundation/windows10/restrictedcapabilities"
+  IgnorableNamespaces="uap rescap">
+
+  <Identity Publisher="CN=User Name" />
+
+  <Properties>
+    <PublisherDisplayName>User Name</PublisherDisplayName>
+  </Properties>
+
+  <Dependencies>
+    <TargetDeviceFamily Name="Windows.Universal" MinVersion="10.0.17763.0" MaxVersionTested="10.0.19041.0" />
+    <TargetDeviceFamily Name="Windows.Desktop" MinVersion="10.0.17763.0" MaxVersionTested="10.0.19041.0" />
+  </Dependencies>
+
+  <Resources>
+    <Resource Language="x-generate" />
+  </Resources>
+
+  <Applications>
+    <Application Id="App" Executable="$targetnametoken$.exe" EntryPoint="$targetentrypoint$">
+      <uap:VisualElements />
+    </Application>
+  </Applications>
+
+  <Capabilities>
+    <rescap:Capability Name="runFullTrust" />
+  </Capabilities>
+
+</Package>

src/InAppBillingTests/InAppBillingMauiTest/Platforms/Windows/app.manifest

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<assembly manifestVersion="1.0" xmlns="urn:schemas-microsoft-com:asm.v1">
+  <assemblyIdentity version="1.0.0.0" name="InAppBillingMauiTest.WinUI.app"/>
+
+  <application xmlns="urn:schemas-microsoft-com:asm.v3">
+    <windowsSettings>
+      <!-- The combination of below two tags have the following effect:
+           1) Per-Monitor for >= Windows 10 Anniversary Update
+           2) System < Windows 10 Anniversary Update
+      -->
+      <dpiAware xmlns="http://schemas.microsoft.com/SMI/2005/WindowsSettings">true/PM</dpiAware>
+      <dpiAwareness xmlns="http://schemas.microsoft.com/SMI/2016/WindowsSettings">PerMonitorV2, PerMonitor</dpiAwareness>
+    </windowsSettings>
+  </application>
+</assembly>