misc:

extract App.axaml;
Android demo display label.

demo/Semi.Avalonia.Demo/App.axaml

@@ -0,0 +1,10 @@
+<Application
+    x:Class="Semi.Avalonia.Demo.App"
+    xmlns="https://github.com/avaloniaui"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
+    <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/App.axaml.cs

@@ -0,0 +1,29 @@
+using Avalonia;
+using Avalonia.Controls.ApplicationLifetimes;
+using Avalonia.Markup.Xaml;
+using Semi.Avalonia.Demo.Views;
+
+namespace Semi.Avalonia.Demo;
+
+public partial class App : Application
+{
+    public override void Initialize()
+    {
+        AvaloniaXamlLoader.Load(this);
+    }
+
+    public override void OnFrameworkInitializationCompleted()
+    {
+        switch (ApplicationLifetime)
+        {
+            case IClassicDesktopStyleApplicationLifetime desktop:
+                desktop.MainWindow = new MainWindow();
+                break;
+            case ISingleViewApplicationLifetime singleView:
+                singleView.MainView = new MainView();
+                break;
+        }
+
+        base.OnFrameworkInitializationCompleted();
+    }
+}