Share common resources across multiple applications?

[maonaoda]

We need App1 and App2 to seamlessly access and utilize resources from BaseApp, including:
common resources (Styles, Colors,)
Platform-specific resources (Android drawables, iOS assets)

Any proven approaches to share resources across multiple MAUI applications?
I tried using link but when compiling it always says that the file cannot be found

├── BaseApp/
│   ├── Resources/
│   │   ├── Fonts/OpenSans-Regular.ttf
│   │   ├── Styles/Colors.xaml
│   │   └── Styles/Styles.xaml  
│   └── Platforms/
│       ├── Android/Resources/* (drawables, layouts, etc.)
│       └── iOS/Resources/* (assets, storyboards, etc.)
└── Apps/
    ├── App1/  
    └── App2/

[stephenquan]

You will probably want to create a class library project. Instead of "BaseApp" perhaps name it as "MyLibrary". With the fonts, say, you can make it an embedded resource of your class library, e.g.

<ItemGroup>
    <EmbeddedResource Include="Fonts/OpenSans-Regular.ttf" />
</ItemGroup>

Then, in both App1 and App2 you will need to update their respective MauiProgram.cs so that it calls AddEmbededResourceFont so that it finds the font resource from the class library.

.ConfigureFonts(fonts =>
{
    //fonts.AddFont("OpenSans-Regular.ttf", "OpenSansRegular");
    var assembly = Assembly.GetAssembly(typeof(MyLibrary)); // Replace with a reliable way to access your class library's assembly
    fonts.AddEmbededResourceFont(assembly, "OpenSans-Regular.ttf", "OpenSansRegular");
});

You can take this one step further and offer a MauiAppBuilder extension method in your class library:

namespace MyLibrary;

public static partial class MyLibraryAppBuilderExtensions
{
    public static MauiAppBuilder UseMyLibrary(this MauiAppBuilder builder)
    {
        builder.ConfigureFonts(fonts =>
        {
            var assembly = Assembly.GetAssembly(typeof(MyLibraryAppBuilderExtensions));
            fonts.AddEmbededResourceFont(assembly, "OpenSans-Regular.ttf", "OpenSansRegular");
        }
        return builder;
    }
}

Then in App1 and App2 they only need to call UseMyLibrary's extension method, e.g.

	public static MauiApp CreateMauiApp()
	{
		var builder = MauiApp.CreateBuilder();
		builder
			.UseMauiApp<App>()
                        .UseMyLibrary()
                        /* ... */