misc: try to fix android app.

demo/Semi.Avalonia.Demo.Android/App.axaml

@@ -0,0 +1,11 @@
+<Application
+    x:Class="Semi.Avalonia.Demo.Android.App"
+    xmlns="https://github.com/avaloniaui"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:local="using:Semi.Avalonia.Demo.Android">
+    <Application.Styles>
+        <StyleInclude Source="avares://Semi.Avalonia/Themes/Index.axaml" />
+        <StyleInclude Source="avares://Semi.Avalonia.DataGrid/Index.axaml" />
+        <StyleInclude Source="avares://Semi.Avalonia.ColorPicker/Index.axaml" />
+    </Application.Styles>
+</Application>

demo/Semi.Avalonia.Demo.Android/App.axaml.cs

@@ -0,0 +1,27 @@
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Controls.ApplicationLifetimes;
+using Avalonia.Markup.Xaml;
+using Semi.Avalonia.Demo.Views;
+
+namespace Semi.Avalonia.Demo.Android;
+
+public partial class App : Application
+{
+    public App()
+    {
+        AvaloniaXamlLoader.Load(this);
+    }
+
+    public override void OnFrameworkInitializationCompleted()
+    {
+        if (ApplicationLifetime is ISingleViewApplicationLifetime single)
+        {
+            single.MainView = new MainView()
+            {
+
+            };
+        }
+        base.OnFrameworkInitializationCompleted();
+    }
+}

demo/Semi.Avalonia.Demo.Android/MainActivity.cs

@@ -2,10 +2,11 @@ using Android.App;
 using Android.Content.PM;
 using Avalonia.Android;
 
-namespace Semi.Avalonia.Demo;
+namespace Semi.Avalonia.Demo.Android;
 
-[Activity(Label = "Semi.Avalonia.Demo.Android", Icon = "@drawable/Icon",
+[Activity(Label = "Semi.Avalonia.Demo.Android", Icon = "@drawable/Icon", Theme = "@style/MyTheme.NoActionBar",
     LaunchMode = LaunchMode.SingleTop, ConfigurationChanges = ConfigChanges.Orientation | ConfigChanges.ScreenSize)]
 public class MainActivity : AvaloniaMainActivity
 {
+    
 }

demo/Semi.Avalonia.Demo.Android/Resources/values/styles.xml

@@ -4,7 +4,7 @@
   <style name="MyTheme">
   </style>
 
-  <style name="MyTheme.NoActionBar">
+  <style name="MyTheme.NoActionBar" parent="@style/Theme.AppCompat.NoActionBar">
     <item name="android:windowActionBar">false</item>
     <item name="android:windowNoTitle">true</item>
   </style>

demo/Semi.Avalonia.Demo.Android/Semi.Avalonia.Demo.Android.csproj

@@ -9,7 +9,7 @@
         <AndroidPackageFormat>apk</AndroidPackageFormat>
         <AndroidEnableProfiledAot>False</AndroidEnableProfiledAot>
         <EmbedAssembliesIntoApk>true</EmbedAssembliesIntoApk>
-        <RootNamespace>Semi.Avalonia.Demo</RootNamespace>
+        <RootNamespace>Semi.Avalonia.Demo.Android</RootNamespace>
     </PropertyGroup>
 
     <ItemGroup>
@@ -19,4 +19,5 @@
     <ItemGroup>
       <ProjectReference Include="..\Semi.Avalonia.Demo\Semi.Avalonia.Demo.csproj" />
     </ItemGroup>
+    
 </Project>

demo/Semi.Avalonia.Demo.Android/SplashActivity.cs

@@ -0,0 +1,22 @@
+using Android.App;
+using Android.Content;
+using Avalonia;
+using Avalonia.Android;
+using Application = Android.App.Application;
+
+namespace Semi.Avalonia.Demo.Android;
+
+[Activity(Theme = "@style/MyTheme.Splash", MainLauncher = true, NoHistory = true)]
+public class SplashActivity: AvaloniaSplashActivity<App>
+{
+    protected override AppBuilder CustomizeAppBuilder(AppBuilder builder)
+    {
+        return base.CustomizeAppBuilder(builder);
+    }
+
+    protected override void OnResume()
+    {
+        base.OnResume();
+        StartActivity(new Intent(Application.Context, typeof(MainActivity)));
+    }
+}

demo/Semi.Avalonia.Demo.Android/Views/MainView.axaml

@@ -0,0 +1,11 @@
+<UserControl
+    x:Class="Semi.Avalonia.Demo.Android.Views.MainView"
+    xmlns="https://github.com/avaloniaui"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+    d:DesignHeight="450"
+    d:DesignWidth="800"
+    mc:Ignorable="d">
+    Welcome to Avalonia!
+</UserControl>

demo/Semi.Avalonia.Demo.Android/Views/MainView.axaml.cs

@@ -0,0 +1,18 @@
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Markup.Xaml;
+
+namespace Semi.Avalonia.Demo.Android.Views;
+
+public partial class MainView : UserControl
+{
+    public MainView()
+    {
+        InitializeComponent();
+    }
+
+    private void InitializeComponent()
+    {
+        AvaloniaXamlLoader.Load(this);
+    }
+}