using UnityEngine;using System.Collections;using System;public class eventTest : MonoBehaviour {    private event Action
     
       onClick;    private uint i = 0;    // Use this for initialization    void Start ()     {        onClick += OnClick;        onClick += OnClick;        onClick += OnClick;        onClick += OnClick;        onClick += OnClick;        onClick += OnClick;        onClick += OnClick2;    }        // Update is called once per frame    void Update ()    {        if (Input.GetMouseButtonUp(0))        {            Delegate[] list = onClick.GetInvocationList();            Debug.Log("存在在" + Array.IndexOf(list, (Action
      
       )OnClick2));                       //for (int i = 0; i < list.Length; i++ )            //{            //    if(list[i].Equals((Action
       
        )OnClick))            //    {            //    }            //}        }    }    private void OnClick(uint i)    {        Debug.Log(i);        i++;    }    private void OnClick2(uint i)    {    }}
       
      
     

不存在输出为-1，存在输出为大于0的index