Add Maui example

code/27_MAUI/MauiTerrible/MauiProgram.cs

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+using System.ComponentModel;
+using Microsoft.Maui;
+using Microsoft.Maui.Controls;
+
+// THIS CODE IS A MOTIVATION EXAMPLE FOR MVC OR MVVM PATTERNS. IT IS NOT
+// A RECOMMENDED PRACTICE TO USE THIS CODE IN PRODUCTION!
+// GUI CONTROLS SHOULD NOT BE DIRECTLY BOUND TO DATA MODELS!
+
+public class App : Application
+{
+    public App()
+    {
+        Student data = new Student("John");
+        data.ChangePropertyAfterDelay(5);
+
+        var entry = new Entry { Placeholder = "Enter a new name here!" };
+
+        var label = new Label { 
+            HorizontalTextAlignment = TextAlignment.Center,
+            Text = $"Current Name is {data.Name}" 
+        };
+
+        var button = new Button { Text = "Submit" };
+
+        button.Clicked += (sender, args) =>
+        {
+            data.Name = entry.Text;
+        };
+
+        data.NameHasChanged += () => label.Text = $"Current Name is {data.Name}";
+
+        MainPage = new ContentPage
+        {
+            Content = new StackLayout
+            {
+                VerticalOptions = LayoutOptions.Center,
+                Children = { entry, button, label }
+            }
+        };
+    }
+}
+
+public class Student
+{
+    public event Action NameHasChanged;
+    private string _name;
+    public string Name
+    {
+        get => _name;
+        set
+        {
+            if (_name != value)
+            {
+                _name = value;
+                NameHasChanged?.Invoke();
+            }
+        }
+    }
+
+    public Student(string name)
+    {
+        Name = name;
+    }
+
+    public async Task ChangePropertyAfterDelay(int delayInSeconds)
+    {
+        await Task.Delay(delayInSeconds * 1000);
+        Name = "Jane";
+        Console.WriteLine("Property updated to: " + Name);
+    }
+}
+
+public static class MauiProgram
+{
+    public static MauiApp CreateMauiApp()
+    {
+        var builder = MauiApp.CreateBuilder();
+        builder.UseMauiApp<App>();
+        return builder.Build();
+    }
+}

code/27_MAUI/MauiTerrible/MauiTerrible.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+	<PropertyGroup>
+		<TargetFrameworks>net8.0-android</TargetFrameworks>
+		<TargetFrameworks Condition="$([MSBuild]::IsOSPlatform('windows'))">$(TargetFrameworks);net8.0-windows10.0.19041.0</TargetFrameworks>
+		<!-- Uncomment to also build the tizen app. You will need to install tizen by following this: https://github.com/Samsung/Tizen.NET -->
+		<!-- <TargetFrameworks>$(TargetFrameworks);net8.0-tizen</TargetFrameworks> -->
+
+		<!-- Note for MacCatalyst:
+		The default runtime is maccatalyst-x64, except in Release config, in which case the default is maccatalyst-x64;maccatalyst-arm64.
+		When specifying both architectures, use the plural <RuntimeIdentifiers> instead of the singular <RuntimeIdentifier>.
+		The Mac App Store will NOT accept apps with ONLY maccatalyst-arm64 indicated;
+		either BOTH runtimes must be indicated or ONLY macatalyst-x64. -->
+		<!-- For example: <RuntimeIdentifiers>maccatalyst-x64;maccatalyst-arm64</RuntimeIdentifiers> -->
+
+		<OutputType>Exe</OutputType>
+		<RootNamespace>MauiTerrible</RootNamespace>
+		<UseMaui>true</UseMaui>
+		<SingleProject>true</SingleProject>
+		<ImplicitUsings>enable</ImplicitUsings>
+		<Nullable>enable</Nullable>
+
+		<!-- Display name -->
+		<ApplicationTitle>MauiTerrible</ApplicationTitle>
+
+		<!-- App Identifier -->
+		<ApplicationId>com.companyname.mauiterrible</ApplicationId>
+
+		<!-- Versions -->
+		<ApplicationDisplayVersion>1.0</ApplicationDisplayVersion>
+		<ApplicationVersion>1</ApplicationVersion>
+
+		<SupportedOSPlatformVersion Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) == 'ios'">11.0</SupportedOSPlatformVersion>
+		<SupportedOSPlatformVersion Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) == 'maccatalyst'">13.1</SupportedOSPlatformVersion>
+		<SupportedOSPlatformVersion Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) == 'android'">21.0</SupportedOSPlatformVersion>
+		<SupportedOSPlatformVersion Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) == 'windows'">10.0.17763.0</SupportedOSPlatformVersion>
+		<TargetPlatformMinVersion Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) == 'windows'">10.0.17763.0</TargetPlatformMinVersion>
+		<SupportedOSPlatformVersion Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) == 'tizen'">6.5</SupportedOSPlatformVersion>
+	</PropertyGroup>
+
+	<ItemGroup>
+		<!-- App Icon -->
+		<MauiIcon Include="Resources\AppIcon\appicon.svg" ForegroundFile="Resources\AppIcon\appiconfg.svg" Color="#512BD4" />
+
+		<!-- Splash Screen -->
+		<MauiSplashScreen Include="Resources\Splash\splash.svg" Color="#512BD4" BaseSize="128,128" />
+
+		<!-- Images -->
+		<MauiImage Include="Resources\Images\*" />
+		<MauiImage Update="Resources\Images\dotnet_bot.png" Resize="True" BaseSize="300,185" />
+
+		<!-- Custom Fonts -->
+		<MauiFont Include="Resources\Fonts\*" />
+
+		<!-- Raw Assets (also remove the "Resources\Raw" prefix) -->
+		<MauiAsset Include="Resources\Raw\**" LogicalName="%(RecursiveDir)%(Filename)%(Extension)" />
+	</ItemGroup>
+
+	<ItemGroup>
+		<PackageReference Include="Microsoft.Maui.Controls" Version="$(MauiVersion)" />
+		<PackageReference Include="Microsoft.Maui.Controls.Compatibility" Version="$(MauiVersion)" />
+		<PackageReference Include="Microsoft.Extensions.Logging.Debug" Version="8.0.0" />
+	</ItemGroup>
+
+</Project>

code/27_MAUI/MauiTerrible/MauiTerrible.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.5.002.0
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "MauiTerrible", "MauiTerrible.csproj", "{53BE0D7B-4987-4BCF-BEE9-4CD0EAF10824}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{53BE0D7B-4987-4BCF-BEE9-4CD0EAF10824}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{53BE0D7B-4987-4BCF-BEE9-4CD0EAF10824}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{53BE0D7B-4987-4BCF-BEE9-4CD0EAF10824}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{53BE0D7B-4987-4BCF-BEE9-4CD0EAF10824}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {C09A0AE8-4477-48BB-B526-29C9F708FA43}
+	EndGlobalSection
+EndGlobal

code/27_MAUI/MauiTerrible/Platforms/Android/AndroidManifest.xml

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+<?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: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>

code/27_MAUI/MauiTerrible/Platforms/Android/MainActivity.cs

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+using Android.App;
+using Android.Content.PM;
+using Android.OS;
+
+namespace MauiTerrible;
+
+[Activity(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
+{
+}

code/27_MAUI/MauiTerrible/Platforms/Android/MainApplication.cs

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

code/27_MAUI/MauiTerrible/Platforms/Android/Resources/values/colors.xml

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

code/27_MAUI/MauiTerrible/Platforms/MacCatalyst/AppDelegate.cs

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+using Foundation;
+
+namespace MauiTerrible;
+
+[Register("AppDelegate")]
+public class AppDelegate : MauiUIApplicationDelegate
+{
+	protected override MauiApp CreateMauiApp() => MauiProgram.CreateMauiApp();
+}

code/27_MAUI/MauiTerrible/Platforms/MacCatalyst/Entitlements.plist

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+<?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">
+    <!-- See https://aka.ms/maui-publish-app-store#add-entitlements for more information about adding entitlements.-->
+    <dict>
+        <!-- App Sandbox must be enabled to distribute a MacCatalyst app through the Mac App Store. -->
+        <key>com.apple.security.app-sandbox</key>
+        <true/>
+        <!-- When App Sandbox is enabled, this value is required to open outgoing network connections. -->
+        <key>com.apple.security.network.client</key>
+        <true/>
+    </dict>
+</plist>
+

code/27_MAUI/MauiTerrible/Platforms/MacCatalyst/Info.plist

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+<?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>
+    <!-- The Mac App Store requires you specify if the app uses encryption. -->
+    <!-- Please consult https://developer.apple.com/documentation/bundleresources/information_property_list/itsappusesnonexemptencryption -->
+    <!-- <key>ITSAppUsesNonExemptEncryption</key> -->
+    <!-- Please indicate <true/> or <false/> here. -->
+
+    <!-- Specify the category for your app here. -->
+    <!-- Please consult https://developer.apple.com/documentation/bundleresources/information_property_list/lsapplicationcategorytype -->
+    <!-- <key>LSApplicationCategoryType</key> -->
+    <!-- <string>public.app-category.YOUR-CATEGORY-HERE</string> -->
+	<key>UIDeviceFamily</key>
+	<array>
+		<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>

code/27_MAUI/MauiTerrible/Platforms/MacCatalyst/Program.cs

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+using ObjCRuntime;
+using UIKit;
+
+namespace MauiTerrible;
+
+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));
+	}
+}

code/27_MAUI/MauiTerrible/Platforms/Tizen/Main.cs

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+using System;
+using Microsoft.Maui;
+using Microsoft.Maui.Hosting;
+
+namespace MauiTerrible;
+
+class Program : MauiApplication
+{
+	protected override MauiApp CreateMauiApp() => MauiProgram.CreateMauiApp();
+
+	static void Main(string[] args)
+	{
+		var app = new Program();
+		app.Run(args);
+	}
+}

code/27_MAUI/MauiTerrible/Platforms/Tizen/tizen-manifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest package="maui-application-id-placeholder" version="0.0.0" api-version="8" xmlns="http://tizen.org/ns/packages">
+  <profile name="common" />
+  <ui-application appid="maui-application-id-placeholder" exec="MauiTerrible.dll" multiple="false" nodisplay="false" taskmanage="true" type="dotnet" launch_mode="single">
+    <label>maui-application-title-placeholder</label>
+    <icon>maui-appicon-placeholder</icon>
+    <metadata key="http://tizen.org/metadata/prefer_dotnet_aot" value="true" />
+  </ui-application>
+  <shortcut-list />
+  <privileges>
+    <privilege>http://tizen.org/privilege/internet</privilege>
+  </privileges> 
+  <dependencies />
+  <provides-appdefined-privileges />
+</manifest>

code/27_MAUI/MauiTerrible/Platforms/Windows/App.xaml

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+<maui:MauiWinUIApplication
+    x:Class="MauiTerrible.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:MauiTerrible.WinUI">
+
+</maui:MauiWinUIApplication>

code/27_MAUI/MauiTerrible/Platforms/Windows/App.xaml.cs

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+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 MauiTerrible.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();
+}
+