[WIP] turn NativeAOT sample into a .NET MAUI app

NuGet.config

@@ -21,6 +21,7 @@
     <!-- Added manually for dotnet/runtime 8.0.11 -->
     <add key="darc-pub-dotnet-emsdk-91b783e" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-dotnet-emsdk-91b783ed/nuget/v3/index.json" />
     <add key="darc-pub-dotnet-runtime-ef07c4f" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-dotnet-runtime-ef07c4f2/nuget/v3/index.json" />
+    <add key="maui-local" value="D:\src\maui\artifacts\packages\Release\Shipping" />
   </packageSources>
   <disabledPackageSources />
 </configuration>

samples/NativeAOT/App.xaml

@@ -0,0 +1,14 @@
+<?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:NativeAOT"
+             x:Class="NativeAOT.App">
+    <Application.Resources>
+        <ResourceDictionary>
+            <ResourceDictionary.MergedDictionaries>
+                <ResourceDictionary Source="Resources/Styles/Colors.xaml" />
+                <ResourceDictionary Source="Resources/Styles/Styles.xaml" />
+            </ResourceDictionary.MergedDictionaries>
+        </ResourceDictionary>
+    </Application.Resources>
+</Application>

samples/NativeAOT/App.xaml.cs

@@ -0,0 +1,14 @@
+namespace NativeAOT;
+
+public partial class App : Application
+{
+	public App()
+	{
+		InitializeComponent();
+	}
+
+	protected override Window CreateWindow(IActivationState? activationState)
+	{
+		return new Window(new AppShell());
+	}
+}

samples/NativeAOT/AppShell.xaml

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

samples/NativeAOT/AppShell.xaml.cs

@@ -0,0 +1,9 @@
+namespace NativeAOT;
+
+public partial class AppShell : Shell
+{
+	public AppShell()
+	{
+		InitializeComponent();
+	}
+}

samples/NativeAOT/MainPage.xaml

@@ -0,0 +1,36 @@
+<?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="NativeAOT.MainPage">
+
+    <ScrollView>
+        <VerticalStackLayout
+            Padding="30,0"
+            Spacing="25">
+            <Image
+                Source="dotnet_bot.png"
+                HeightRequest="185"
+                Aspect="AspectFit"
+                SemanticProperties.Description="dot net bot in a hovercraft number nine" />
+
+            <Label
+                Text="Hello, World!"
+                Style="{StaticResource Headline}"
+                SemanticProperties.HeadingLevel="Level1" />
+
+            <Label
+                Text="Welcome to &#10;.NET MAUI on NativeAOT!"
+                Style="{StaticResource SubHeadline}"
+                SemanticProperties.HeadingLevel="Level2"
+                SemanticProperties.Description="Welcome to dot net maui on native AOT" />
+
+            <Button
+                x:Name="CounterBtn"
+                Text="Click me" 
+                SemanticProperties.Hint="Counts the number of times you click"
+                Clicked="OnCounterClicked"
+                HorizontalOptions="Fill" />
+        </VerticalStackLayout>
+    </ScrollView>
+
+</ContentPage>

samples/NativeAOT/MainPage.xaml.cs

@@ -0,0 +1,23 @@
+namespace NativeAOT;
+
+public partial class MainPage : ContentPage
+{
+	int count = 0;
+
+	public MainPage()
+	{
+		InitializeComponent();
+	}
+
+	private void OnCounterClicked(object? sender, EventArgs e)
+	{
+		count++;
+
+		if (count == 1)
+			CounterBtn.Text = $"Clicked {count} time";
+		else
+			CounterBtn.Text = $"Clicked {count} times";
+
+		SemanticScreenReader.Announce(CounterBtn.Text);
+	}
+}

samples/NativeAOT/MauiProgram.cs

@@ -0,0 +1,24 @@
+using Microsoft.Extensions.Logging;
+
+namespace NativeAOT;
+
+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");
+			});
+
+#if DEBUG
+		builder.Logging.AddDebug();
+#endif
+
+		return builder.Build();
+	}
+}

samples/NativeAOT/NativeAOT.csproj

@@ -1,10 +1,13 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <TargetFramework>$(DotNetAndroidTargetFramework)</TargetFramework>
-    <SupportedOSPlatformVersion>21</SupportedOSPlatformVersion>
+    <SupportedOSPlatformVersion>23</SupportedOSPlatformVersion>
     <OutputType>Exe</OutputType>
     <Nullable>enable</Nullable>
+    <UseMaui>true</UseMaui>
+    <SingleProject>true</SingleProject>
     <ImplicitUsings>enable</ImplicitUsings>
+    <ApplicationTitle>NativeAOT</ApplicationTitle>
     <ApplicationId>net.dot.hellonativeaot</ApplicationId>
     <ApplicationVersion>1</ApplicationVersion>
     <ApplicationDisplayVersion>1.0</ApplicationDisplayVersion>
@@ -14,15 +17,36 @@
     <!-- Current required properties for NativeAOT -->
     <PublishAot>true</PublishAot>
     <PublishAotUsingRuntimePack>true</PublishAotUsingRuntimePack>
+    <!-- Sizoscope: https://github.com/MichalStrehovsky/sizoscope -->
+    <IlcGenerateMstatFile>true</IlcGenerateMstatFile>
+    <IlcGenerateDgmlFile>true</IlcGenerateDgmlFile>
+    <!-- Verify we get a specific MAUI version -->
+    <MauiVersion>10.0.0-ci.net10.25074.1</MauiVersion>
+    <!-- local packages folder -->
+    <RestorePackagesPath>$(MSBuildThisFileDirectory)..\..\packages</RestorePackagesPath>
+    <RestoreAdditionalProjectSources>D:\src\android-libraries\output</RestoreAdditionalProjectSources>
   </PropertyGroup>
 
   <!-- Settings for CI -->
   <PropertyGroup Condition=" '$(RunningOnCI)' == 'true' ">
     <!-- x86_64 emulator -->
     <RuntimeIdentifier>android-x64</RuntimeIdentifier>
     <_NuGetFolderOnCI>..\..\bin\Build$(Configuration)\nuget-unsigned</_NuGetFolderOnCI>
-    <RestoreAdditionalProjectSources Condition="Exists('$(_NuGetFolderOnCI)')">$(_NuGetFolderOnCI)</RestoreAdditionalProjectSources>
+    <RestoreAdditionalProjectSources Condition="Exists('$(_NuGetFolderOnCI)')">$(RestoreAdditionalProjectSources);$(_NuGetFolderOnCI)</RestoreAdditionalProjectSources>
     <_FastDeploymentDiagnosticLogging>true</_FastDeploymentDiagnosticLogging>
   </PropertyGroup>
 
+  <ItemGroup>
+    <MauiIcon Include="Resources\AppIcon\appicon.svg" ForegroundFile="Resources\AppIcon\appiconfg.svg" Color="#512BD4" />
+    <MauiSplashScreen Include="Resources\Splash\splash.svg" Color="#512BD4" BaseSize="128,128" />
+    <MauiImage Include="Resources\Images\*" />
+    <MauiImage Update="Resources\Images\dotnet_bot.png" Resize="True" BaseSize="300,185" />
+    <MauiFont Include="Resources\Fonts\*" />
+    <MauiAsset Include="Resources\Raw\**" LogicalName="%(RecursiveDir)%(Filename)%(Extension)" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Maui.Controls" Version="$(MauiVersion)" />
+    <PackageReference Include="Microsoft.Extensions.Logging.Debug" Version="10.0.0-alpha.1.25071.14" />
+  </ItemGroup>
 </Project>

samples/NativeAOT/AndroidManifest.xml → samples/NativeAOT/Platforms/Android/AndroidManifest.xml

@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android">
-  <application android:allowBackup="true" android:icon="@mipmap/appicon" android:label="@string/app_name" android:roundIcon="@mipmap/appicon_round" android:supportsRtl="true">
+  <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" />
   <uses-permission android:name="android.permission.INTERNET" />
 </manifest>

samples/NativeAOT/Platforms/Android/MainActivity.cs

@@ -0,0 +1,19 @@
+using Android.App;
+using Android.Content.PM;
+using Android.OS;
+using Android.Runtime;
+using Android.Util;
+
+namespace NativeAOT;
+
+// Name required for typemap in NativeAotTypeManager
+[Activity (Name = "my.MainActivity", Theme = "@style/Maui.SplashTheme", MainLauncher = true, LaunchMode = LaunchMode.SingleTop, ConfigurationChanges = ConfigChanges.ScreenSize | ConfigChanges.Orientation | ConfigChanges.UiMode | ConfigChanges.ScreenLayout | ConfigChanges.SmallestScreenSize | ConfigChanges.Density)]
+public class MainActivity : MauiAppCompatActivity
+{
+	protected override void OnCreate (Bundle? savedInstanceState)
+	{
+		Log.Debug ("NativeAOT", "MainActivity.OnCreate()");
+
+		base.OnCreate (savedInstanceState);
+	}
+}

samples/NativeAOT/Platforms/Android/MainApplication.cs

@@ -0,0 +1,28 @@
+using Android.App;
+using Android.Runtime;
+using Android.Util;
+
+namespace NativeAOT;
+
+/// <summary>
+/// NOTE: This class is not required, but used for testing Android.App.Application subclasses.
+/// Name required for typemap in NativeAotTypeManager
+/// </summary>
+[Application (Name = "my.MainApplication")]
+public class MainApplication : MauiApplication
+{
+	public MainApplication (IntPtr handle, JniHandleOwnership transfer)
+		: base (handle, transfer)
+	{
+		Log.Debug ("NativeAOT", $"Application..ctor({handle.ToString ("x2")}, {transfer})");
+	}
+
+	public override void OnCreate ()
+	{
+		Log.Debug ("NativeAOT", "Application.OnCreate()");
+
+		base.OnCreate ();
+	}
+
+	protected override MauiApp CreateMauiApp() => MauiProgram.CreateMauiApp();
+}

samples/NativeAOT/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>

samples/NativeAOT/Resources/Raw/AboutAssets.txt

@@ -0,0 +1,15 @@
+Any raw assets you want to be deployed with your application can be placed in
+this directory (and child directories). Deployment of the asset to your application
+is automatically handled by the following `MauiAsset` Build Action within your `.csproj`.
+
+	<MauiAsset Include="Resources\Raw\**" LogicalName="%(RecursiveDir)%(Filename)%(Extension)" />
+
+These files will be deployed with your package and will be accessible using Essentials:
+
+	async Task LoadMauiAsset()
+	{
+		using var stream = await FileSystem.OpenAppPackageFileAsync("AboutAssets.txt");
+		using var reader = new StreamReader(stream);
+
+		var contents = reader.ReadToEnd();
+	}