如何在Prism模块中注册特定于平台的实现？

您无需在该模块中注册平台详细信息。您可以在特定于平台的实际项目中注册特定于平台的内容。您的模块只需要引用该接口即可，仅此而已。您可以使用IPlatformInitializer来执行此操作。在此处查看示例：

Android：https：//github.com/PrismLibrary/Prism/blob/master/Sandbox/Xamarin/HelloWorld/HelloWorld/HelloWorld.Droid/MainActivity.cs#L28

[Activity(Label = "HelloWorld", Icon = "@drawable/icon", MainLauncher = true, ConfigurationChanges = ConfigChanges.ScreenSize | ConfigChanges.Orientation)]
public class MainActivity : global::Xamarin.Forms.Platform.Android.FormsAppCompatActivity
{
    protected override void OnCreate(Bundle bundle)
    {
        TabLayoutResource = Resource.Layout.tabs;
        ToolbarResource = Resource.Layout.toolbar;

        base.OnCreate(bundle);

        global::Xamarin.Forms.Forms.Init(this, bundle);
        LoadApplication(new App(new AndroidInitializer()));
    }
}

public class AndroidInitializer : IPlatformInitializer
{
    public void RegisterTypes(IUnityContainer container)
    {

    }
}

XF项目：https : //github.com/PrismLibrary/Prism/blob/master/Sandbox/Xamarin/HelloWorld/HelloWorld/HelloWorld/App.cs#L15

public class App : PrismApplication
{
    public App(IPlatformInitializer initializer = null) : base(initializer) { }
    ...
}