add uno user dialogs

Author: aritchie

Acr.UserDialogs.sln

@@ -19,6 +19,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Sample", "sample\Sample\Sam
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Acr.UserDialogs.Maui", "src\Acr.UserDialogs.Maui\Acr.UserDialogs.Maui.csproj", "{D45ECD34-ED85-4F09-914F-0D2A566C39C3}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Acr.UserDialogs.Uno", "src\Acr.UserDialogs.Uno\Acr.UserDialogs.Uno.csproj", "{511F6DE1-61E3-4C22-9E54-6260D44009B4}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Ad-Hoc|Any CPU = Ad-Hoc|Any CPU

src/Acr.UserDialogs.Uno/Acr.UserDialogs.Uno.csproj

@@ -0,0 +1,15 @@
+<Project Sdk="Uno.Sdk/5.6.20">
+    <PropertyGroup>
+        <TargetFrameworks>net8.0-ios;net8.0-maccatalyst;net8.0-android</TargetFrameworks>
+        <UnoSingleProject>true</UnoSingleProject>
+        <OutputType>Library</OutputType>
+        <ImplicitUsings>enable</ImplicitUsings>
+        <Nullable>enable</Nullable>
+        <UnoFeatures>Hosting</UnoFeatures>
+        <RootNamespace>Acr.UserDialogs</RootNamespace>
+    </PropertyGroup>
+  
+    <ItemGroup>
+        <ProjectReference Include="..\Acr.UserDialogs\Acr.UserDialogs.csproj"/>
+    </ItemGroup>
+</Project>

src/Acr.UserDialogs.Uno/AppBuilderExtensions.cs

@@ -0,0 +1,22 @@
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
+
+namespace Acr.UserDialogs;
+
+
+public static class AppBuilderExtensions
+{
+    public static IApplicationBuilder AddUserDialogs(this IApplicationBuilder builder)
+        => builder.Configure((host, _) => host.AddUserDialogs());
+
+    public static IHostBuilder AddUserDialogs(this IHostBuilder builder)
+        => builder.ConfigureServices(services =>
+        {
+            services.AddSingleton(UserDialogs.Instance);
+            #if __ANDROID__
+            // hope for the best casting for now
+            UserDialogs.Init(() => (Android.App.Activity)ContextHelper.Current);
+            #endif
+        });
+}
+