feat: 新增 Android 移动端 head 与共享移动壳（组件面板）

LanMountainDesktop.Mobile.Android/LanMountainDesktop.Mobile.Android.csproj

@@ -0,0 +1,23 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <TargetFramework>net10.0-android</TargetFramework>
+    <SupportedOSPlatformVersion>24</SupportedOSPlatformVersion>
+    <OutputType>Exe</OutputType>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <ApplicationId>org.lanmountain.desktop</ApplicationId>
+    <ApplicationVersion>1</ApplicationVersion>
+    <ApplicationDisplayVersion>0.0.0-dev</ApplicationDisplayVersion>
+    <AndroidPackageFormat>apk</AndroidPackageFormat>
+    <AvaloniaUseCompiledBindingsByDefault>true</AvaloniaUseCompiledBindingsByDefault>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\LanMountainDesktop.Mobile\LanMountainDesktop.Mobile.csproj" />
+    <ProjectReference Include="..\LanMountainDesktop.Platform.Android\LanMountainDesktop.Platform.Android.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Avalonia.Android" />
+  </ItemGroup>
+</Project>

LanMountainDesktop.Mobile.Android/MainActivity.cs

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+using Android.App;
+using Android.Content.PM;
+using Avalonia.Android;
+
+namespace LanMountainDesktop.Mobile.Android;
+
+/// <summary>
+/// Android 入口 Activity。承载 MobileApp（单视图组件面板）。
+/// Avalonia 12 起 AppBuilder 定制移至 <see cref="MobileAndroidApplication"/>。
+/// </summary>
+[Activity(
+    Label = "阑山桌面",
+    Theme = "@style/MyTheme.NoActionBar",
+    Icon = "@drawable/icon",
+    MainLauncher = true,
+    ConfigurationChanges = ConfigChanges.Orientation | ConfigChanges.ScreenSize | ConfigChanges.UiMode)]
+public class MainActivity : AvaloniaMainActivity
+{
+}

LanMountainDesktop.Mobile.Android/MobileAndroidApplication.cs

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+using Android.App;
+using Android.Runtime;
+using Avalonia;
+using Avalonia.Android;
+using LanMountainDesktop.Mobile;
+
+namespace LanMountainDesktop.Mobile.Android;
+
+/// <summary>
+/// Android 应用级入口。Avalonia 12 中 AppBuilder 的创建/定制由
+/// AvaloniaAndroidApplication&lt;TApp&gt; 子类负责（而非 Activity）。
+/// </summary>
+[Application]
+public class MobileAndroidApplication : AvaloniaAndroidApplication<MobileApp>
+{
+    protected MobileAndroidApplication(nint javaReference, JniHandleOwnership transfer)
+        : base(javaReference, transfer)
+    {
+    }
+
+    protected override AppBuilder CustomizeAppBuilder(AppBuilder builder)
+    {
+        return base.CustomizeAppBuilder(builder)
+            .WithInterFont();
+    }
+}

LanMountainDesktop.Mobile.Android/Resources/values/styles.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+  <style name="MyTheme.NoActionBar" parent="@android:style/Theme.Material.Light.NoActionBar">
+    <item name="android:windowNoTitle">true</item>
+    <item name="android:windowActionBar">false</item>
+    <item name="android:colorPrimary">#3B82F6</item>
+  </style>
+</resources>