如何将活动类型传递给Xamarin.Android中的方法？

using System;
using Android.App;
using Android.Content;

public class ActivityHelper
{
    public static void PerformAction<T>() where T : Activity
    {
        Type activityType = typeof(T);
        string activityName = activityType.Name;

        // 根据活动类型执行不同的逻辑
        switch (activityName)
        {
            case "MainActivity":
                // 执行MainActivity特定的逻辑
                Console.WriteLine("Performing action for MainActivity");
                break;
            case "SecondActivity":
                // 执行SecondActivity特定的逻辑
                Console.WriteLine("Performing action for SecondActivity");
                break;
            default:
                Console.WriteLine("Unknown activity type");
                break;
        }
    }
}

[Activity(Label = "MainActivity", MainLauncher = true)]
public class MainActivity : Activity
{
    protected override void OnCreate(Bundle savedInstanceState)
    {
        base.OnCreate(savedInstanceState);
        SetContentView(Resource.Layout.Main);

        // 调用方法并传递当前活动类型
        ActivityHelper.PerformAction<MainActivity>();
    }
}

public static class ActivityHelper
{
    private static readonly Dictionary<string, Action> activityActions = new Dictionary<string, Action>
    {
        { "MainActivity", () => Console.WriteLine("Performing action for MainActivity") },
        { "SecondActivity", () => Console.WriteLine("Performing action for SecondActivity") }
    };

    public static void PerformAction<T>() where T : Activity
    {
        Type activityType = typeof(T);
        string activityName = activityType.Name;

        if (activityActions.TryGetValue(activityName, out Action action))
        {
            action();
        }
        else
        {
            Console.WriteLine("Unknown activity type");
        }
    }
}