unity 消息中心

using System.Collections.Generic;
using System;

public class MessageCenter
{
    private static MessageCenter instance;

    public static MessageCenter Instance
    {
        get { if (instance == null) instance = new MessageCenter();return instance; }
        
    }

    Action<object> action;

    private static Dictionary<string, List<Action<object>>> dic = new Dictionary<string, List<Action<object>>>();

    /// <summary>
    /// 增加监听
    /// </summary>
    /// <param name="str"></param>
    /// <param name="action"></param>
    public static void AddListener(string str,Action<object> action)
    {
        if(dic.ContainsKey(str))
        {
            dic[str].Add(action);
        }
        else
        {
            List<Action<object>> list = new List<Action<object>>();
            list.Add(action);
            dic.Add(str, list);
        }
    }

    /// <summary>
    /// 移除一个监听
    /// </summary>
    /// <param name="str"></param>
    public static void RemoveListener(string str)
    {
        if(!dic.ContainsKey(str))
        {
            return;
        }
        for(int i=0;i<dic[str].Count;i++)
        {
            dic[str].Clear();
        }
    }

    /// <summary>
    /// 发送消息
    /// </summary>
    /// <param name="str"></param>
    /// <param name="obj"></param>
    public static void SendMessage(string str,object obj)
    {
        if(dic.ContainsKey(str))
        {
            for(int i=0;i<dic[str].Count;i++)
            {
                dic[str][i](obj);
            }
        }
    }

    /// <summary>
    /// 清空监听
    /// </summary>
    public static void Clear()
    {
        dic.Clear();
    }
}