First Steps in L27

code/27_MAUI/MauiMinimal/MauiMinimal.csproj

@@ -0,0 +1,65 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+	<PropertyGroup>
+		<TargetFrameworks>net8.0-android</TargetFrameworks>
+		<TargetFrameworks Condition="!$([MSBuild]::IsOSPlatform('linux'))"> net8.0-android;net8.0-ios;net8.0-maccatalyst</TargetFrameworks>
+		<!-- Uncomment to also build the tizen app. You will need to install tizen by following this: https://github.com/Samsung/Tizen.NET -->
+		<!-- <TargetFrameworks>$(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>MauiMinimal</RootNamespace>
+		<UseMaui>true</UseMaui>
+		<SingleProject>true</SingleProject>
+		<ImplicitUsings>enable</ImplicitUsings>
+		<Nullable>enable</Nullable>
+
+		<!-- Display name -->
+		<ApplicationTitle>MauiMinimal</ApplicationTitle>
+
+		<!-- App Identifier -->
+		<ApplicationId>com.companyname.mauiminimal</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/MauiMinimal/MauiMinimal.sln

@@ -0,0 +1,25 @@
+
+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}") = "MauiMinimal", "MauiMinimal.csproj", "{054DB7C1-26EE-4678-836A-B5FEE9E3A7E9}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{054DB7C1-26EE-4678-836A-B5FEE9E3A7E9}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{054DB7C1-26EE-4678-836A-B5FEE9E3A7E9}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{054DB7C1-26EE-4678-836A-B5FEE9E3A7E9}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{054DB7C1-26EE-4678-836A-B5FEE9E3A7E9}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {11306FCF-158B-41BC-9BFF-8C8685AD6637}
+	EndGlobalSection
+EndGlobal

code/27_MAUI/MauiMinimal/MauiProgram.cs

@@ -0,0 +1,38 @@
+using Microsoft.Maui;
+using Microsoft.Maui.Controls;
+
+public class App : Application
+{
+    public App()
+    {
+        //Hauptseite der App als C#-Code
+        MainPage = new ContentPage 
+        {
+            Content = new StackLayout
+            {
+                VerticalOptions = LayoutOptions.Center,
+                Children =
+                {
+                    new Label
+                    {
+                        HorizontalTextAlignment = TextAlignment.Center,
+                        Text = "Welcome to our new lecture on .NET MAUI!"
+                    }
+                }
+            }
+        };
+    }
+}
+
+public static class MauiProgram
+{
+    //gibt Instanz der MauiApp zurück
+    public static MauiApp CreateMauiApp()
+    {
+        //erstellt Builder-Objekt
+        var builder = MauiApp.CreateBuilder();
+        //konfiguriert Builder-Objekt: App als Haupteinstiegspunkt zu verwenden
+        builder .UseMauiApp<App>();
+        return builder.Build();
+    }
+}

code/27_MAUI/MauiMinimal/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">
+	<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/MauiMinimal/Platforms/Android/MainActivity.cs

@@ -0,0 +1,10 @@
+using Android.App;
+using Android.Content.PM;
+using Android.OS;
+
+namespace MauiMinimal;
+
+[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/MauiMinimal/Platforms/Android/MainApplication.cs

@@ -0,0 +1,15 @@
+using Android.App;
+using Android.Runtime;
+
+namespace MauiMinimal;
+
+[Application]
+public class MainApplication : MauiApplication
+{
+	public MainApplication(IntPtr handle, JniHandleOwnership ownership)
+		: base(handle, ownership)
+	{
+	}
+
+	protected override MauiApp CreateMauiApp() => MauiProgram.CreateMauiApp();
+}

code/27_MAUI/tkinter/main.py

@@ -0,0 +1,16 @@
+import tkinter as tk
+from tkinter import messagebox
+
+def say_hello():
+    messagebox.showinfo("Status",
+                        "Aus kleinem Anfang entspringen alle Dinge - Cicero")
+
+window = tk.Tk()
+window.title("Beispiel-GUI")
+window.geometry('520x300')
+
+hello_button = tk.Button(window, text="Ich bin keine einfache Anzeige ",
+                        command=say_hello)
+hello_button.pack(pady=20)
+
+window.mainloop()