Create app UI

SOS.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.0.31611.283
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "SOS", "SOS\SOS.csproj", "{79D6B6E9-9743-40E9-9BF6-E61AEC40AB02}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{79D6B6E9-9743-40E9-9BF6-E61AEC40AB02}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{79D6B6E9-9743-40E9-9BF6-E61AEC40AB02}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{79D6B6E9-9743-40E9-9BF6-E61AEC40AB02}.Debug|Any CPU.Deploy.0 = Debug|Any CPU
+		{79D6B6E9-9743-40E9-9BF6-E61AEC40AB02}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{79D6B6E9-9743-40E9-9BF6-E61AEC40AB02}.Release|Any CPU.Build.0 = Release|Any CPU
+		{79D6B6E9-9743-40E9-9BF6-E61AEC40AB02}.Release|Any CPU.Deploy.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {61F7FB11-1E47-470C-91E2-47F8143E1572}
+	EndGlobalSection
+EndGlobal

SOS/App.xaml

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+<?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:SOS"
+             x:Class="SOS.App">
+    <Application.Resources>
+        <ResourceDictionary>
+            <ResourceDictionary.MergedDictionaries>
+                <ResourceDictionary Source="Resources/Styles/Colors.xaml" />
+                <ResourceDictionary Source="Resources/Styles/Styles.xaml" />
+            </ResourceDictionary.MergedDictionaries>
+        </ResourceDictionary>
+    </Application.Resources>
+</Application>

SOS/App.xaml.cs

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+namespace SOS;
+
+public partial class App : Application
+{
+	public App()
+	{
+		InitializeComponent();
+
+		MainPage = new AppShell();
+	}
+}

SOS/AppShell.xaml

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+<?xml version="1.0" encoding="UTF-8" ?>
+<Shell
+    x:Class="SOS.AppShell"
+    xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
+    xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+    xmlns:local="clr-namespace:SOS"
+    FlyoutIcon="menu.png">
+
+    <FlyoutItem Title="SOS" Icon="sos.png">
+        <ShellContent
+            ContentTemplate="{DataTemplate local:MainPage}" />
+    </FlyoutItem>
+
+    <FlyoutItem Title="Settings" Icon="settings.png">
+        <ShellContent
+            ContentTemplate="{DataTemplate local:SettingsPage}" />
+    </FlyoutItem>
+
+</Shell>

SOS/AppShell.xaml.cs

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+namespace SOS;
+
+public partial class AppShell : Shell
+{
+	public AppShell()
+	{
+		InitializeComponent();
+	}
+}

SOS/MainPage.xaml

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+<?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="SOS.MainPage"
+             Title="SOS">
+
+    <ScrollView>
+        <VerticalStackLayout
+            Spacing="25"
+            Padding="50" >
+
+            <Button Text="SOS"
+                x:Name="SOSButton"
+                WidthRequest="300"
+                HeightRequest="300"
+                BackgroundColor="Red"
+                TextColor="White"
+                HorizontalOptions="Center"
+                VerticalOptions="Center"
+                CornerRadius="150"
+                Clicked="SOSButtonClicked" />
+
+        </VerticalStackLayout>
+    </ScrollView>
+
+</ContentPage>

SOS/MainPage.xaml.cs

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+namespace SOS;
+
+public partial class MainPage : ContentPage
+{
+	public MainPage()
+	{
+		InitializeComponent();
+	}
+
+    private async void SOSButtonClicked(object sender, EventArgs e)
+    {
+        SOSButton.BackgroundColor = Colors.Crimson;
+        await DisplayAlert("Alert", "Button Works", "Ok");
+        SOSButton.BackgroundColor = Colors.Red;
+    }
+}

SOS/MauiProgram.cs

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+namespace SOS;
+
+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();
+	}
+}

SOS/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>

SOS/Platforms/Android/MainActivity.cs

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

SOS/Platforms/Android/MainApplication.cs

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

SOS/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>

SOS/Platforms/MacCatalyst/AppDelegate.cs

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

SOS/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>
+	<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>

SOS/Platforms/MacCatalyst/Program.cs

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

SOS/Platforms/Tizen/Main.cs

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

SOS/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="7" xmlns="http://tizen.org/ns/packages">
+  <profile name="common" />
+  <ui-application appid="maui-application-id-placeholder" exec="SOS.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>

SOS/Platforms/Windows/App.xaml

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

SOS/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 SOS.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();
+}
+

SOS/Platforms/Windows/Package.appxmanifest

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+<?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:mp="http://schemas.microsoft.com/appx/2014/phone/manifest"
+  xmlns:rescap="http://schemas.microsoft.com/appx/manifest/foundation/windows10/restrictedcapabilities"
+  IgnorableNamespaces="uap rescap">
+
+  <Identity Name="maui-package-name-placeholder" Publisher="CN=User Name" Version="0.0.0.0" />
+
+  <mp:PhoneIdentity PhoneProductId="080478EE-9707-4BFE-8445-A7B74CF4147E" PhonePublisherId="00000000-0000-0000-0000-000000000000"/>
+
+  <Properties>
+    <DisplayName>$placeholder$</DisplayName>
+    <PublisherDisplayName>User Name</PublisherDisplayName>
+    <Logo>$placeholder$.png</Logo>
+  </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
+        DisplayName="$placeholder$"
+        Description="$placeholder$"
+        Square150x150Logo="$placeholder$.png"
+        Square44x44Logo="$placeholder$.png"
+        BackgroundColor="transparent">
+        <uap:DefaultTile Square71x71Logo="$placeholder$.png" Wide310x150Logo="$placeholder$.png" Square310x310Logo="$placeholder$.png" />
+        <uap:SplashScreen Image="$placeholder$.png" />
+      </uap:VisualElements>
+    </Application>
+  </Applications>
+
+  <Capabilities>
+    <rescap:Capability Name="runFullTrust" />
+  </Capabilities>
+
+</Package>

SOS/Platforms/Windows/app.manifest

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+<?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="SOS.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>

SOS/Platforms/iOS/AppDelegate.cs

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