广播与监听-白红宇

广播与监听

阅读量：5750 次

发布时间：2019-06-18

本文共 7470 字，大约阅读时间需要 24 分钟。

脚本1：CallBack：用于定义委托类,由于系统自动的Action类只能输入4个参数，故自定义委托类CallBack，可以输入5个参数

public delegate void CallBack();public delegate void CallBack
     
      (T arg1);public delegate void CallBack
      
       (T arg1, X arg2);public delegate void CallBack
       
        (T arg1, X arg2, Y arg3);public delegate void CallBack
        
         (T arg1, X arg2, Y arg3, Z arg4);public delegate void CallBack
         
          (T arg1, X arg2, Y arg3, Z arg4, W arg5);

脚本2：EventType:事件码

public enum EventType{    ShowText,}

脚本3：BtmClick：挂载在Button组件上

using UnityEngine;using UnityEngine.UI;public class BtmClick : MonoBehaviour{    private void Awake()    {        GetComponent

脚本4：ShowText：挂载在Text组件上

using UnityEngine;using UnityEngine.UI;public class ShowText : MonoBehaviour{    private void Awake()    {        gameObject.SetActive(false);        EventCenter.AddListener
     
      (EventType.ShowText, Show);    }    private void OnDestroy()    {        EventCenter.RemoveListener
      
       (EventType.ShowText, Show);    }    private void Show(string str1,string str2,int str3,int str4,int str5)    {        gameObject.SetActive(true);        GetComponent
       
        ().text = str1+ str2 + str3 + str4 + str5;    }}

脚本5：EventCenter

using System;using System.Collections;using System.Collections.Generic;using UnityEngine;/// /// 1.定义一个静态字典变量/// 2.定义公共静态监听方法/// 如果字典的键值为空，则为字典添加键值/// 判断添加的委托类型和存在的委托类型是否是否一致，不一致则抛出异常/// public class EventCenter{    private static Dictionary
       
         m_EventTable = new Dictionary
        
         ();    private static void OnListenerAdding(EventType eventType,Delegate callBack)    {        if (!m_EventTable.ContainsKey(eventType))        {            m_EventTable.Add(eventType, null);        }        Delegate d = m_EventTable[eventType];        if (d != null && d.GetType() != callBack.GetType())        {            throw new Exception(string.Format("尝试为事件{0}添加不同类型的委托，当前事件所对应的委托是{1}，要添加额委托类型为{2}", eventType, d.GetType(), callBack.GetType()));        }    }     private static void OnListenerRemoving(EventType eventType,Delegate callBack)    {        if (m_EventTable.ContainsKey(eventType))        {            Delegate d = m_EventTable[eventType];            if (d == null)            {                throw new Exception(string.Format("移除监听错误：事件{0}没有对应的委托", eventType));            }            else if (d.GetType() != callBack.GetType())            {                throw new Exception(string.Format("移除监听错误：尝试为事件{0}移除不同的委托，当前委托类型为{1}，要移除的委托类型为{2}", eventType, d.GetType(), callBack.GetType()));            }        }        else        {            throw new Exception(string.Format("移除监听错误：没有事件码{0}", eventType));        }    }    private static void OnListenerRemoved(EventType eventType)    {        if (m_EventTable[eventType] == null)        {            m_EventTable.Remove(eventType);        }    }        public static void AddListener(EventType eventType,CallBack callBack)    {        OnListenerAdding(eventType,callBack);        m_EventTable[eventType] = (CallBack)m_EventTable[eventType] + callBack;    }    public static void AddListener
         
          (EventType eventType, CallBack
          
            callBack) { OnListenerAdding(eventType, callBack); m_EventTable[eventType] = (CallBack
           
            )m_EventTable[eventType] + callBack; } public static void AddListener
            
             (EventType eventType, CallBack
             
               callBack) { OnListenerAdding(eventType, callBack); m_EventTable[eventType] = (CallBack
              
               )m_EventTable[eventType] + callBack; } public static void AddListener
               
                (EventType eventType, CallBack
                
                  callBack) { OnListenerAdding(eventType, callBack); m_EventTable[eventType] = (CallBack
                 
                  )m_EventTable[eventType] + callBack; } public static void AddListener
                  
                   (EventType eventType, CallBack
                   
                     callBack) { OnListenerAdding(eventType, callBack); m_EventTable[eventType] = (CallBack
                    
                     )m_EventTable[eventType] + callBack; } public static void AddListener
                     
                      (EventType eventType, CallBack
                      
                        callBack) { OnListenerAdding(eventType, callBack); m_EventTable[eventType] = (CallBack
                       
                        )m_EventTable[eventType] + callBack; } public static void RemoveListener(EventType eventType, CallBack callBack) { OnListenerRemoving(eventType,callBack); m_EventTable[eventType] = (CallBack)m_EventTable[eventType] - callBack; OnListenerRemoved(eventType); } public static void RemoveListener
                        
                         (EventType eventType, CallBack
                         
                           callBack) { OnListenerRemoving(eventType, callBack); m_EventTable[eventType] = (CallBack
                          
                           )m_EventTable[eventType] - callBack; OnListenerRemoved(eventType); } public static void RemoveListener
                           
                            (EventType eventType, CallBack
                            
                              callBack) { OnListenerRemoving(eventType, callBack); m_EventTable[eventType] = (CallBack
                             
                              )m_EventTable[eventType] - callBack; OnListenerRemoved(eventType); } public static void RemoveListener
                              
                               (EventType eventType, CallBack
                               
                                 callBack) { OnListenerRemoving(eventType, callBack); m_EventTable[eventType] = (CallBack
                                
                                 )m_EventTable[eventType] - callBack; OnListenerRemoved(eventType); } public static void RemoveListener
                                 
                                  (EventType eventType, CallBack
                                  
                                    callBack) { OnListenerRemoving(eventType, callBack); m_EventTable[eventType] = (CallBack
                                   
                                    )m_EventTable[eventType] - callBack; OnListenerRemoved(eventType); } public static void RemoveListener
                                    
                                     (EventType eventType, CallBack
                                     
                                       callBack) { OnListenerRemoving(eventType, callBack); m_EventTable[eventType] = (CallBack
                                      
                                       )m_EventTable[eventType] - callBack; OnListenerRemoved(eventType); } public static void Broadcast(EventType eventType) { Delegate d; if(m_EventTable.TryGetValue(eventType,out d)) { CallBack callBack = d as CallBack; if (callBack != null) { callBack(); } else { throw new Exception(string.Format("广播事件错误：事件{0}对应委托具有不同的类型", eventType)); } } } public static void Broadcast
                                       
                                        (EventType eventType,T arg) { Delegate d; if (m_EventTable.TryGetValue(eventType, out d)) { CallBack
                                        
                                          callBack = d as CallBack
                                         
                                          ; if (callBack != null) { callBack(arg); } else { throw new Exception(string.Format("广播事件错误：事件{0}对应委托具有不同的类型", eventType)); } } } public static void Broadcast
                                          
                                           (EventType eventType, T arg1,X arg2) { Delegate d; if (m_EventTable.TryGetValue(eventType, out d)) { CallBack
                                           
                                             callBack = d as CallBack
                                            
                                             ; if (callBack != null) { callBack(arg1,arg2); } else { throw new Exception(string.Format("广播事件错误：事件{0}对应委托具有不同的类型", eventType)); } } } public static void Broadcast
                                             
                                              (EventType eventType, T arg1, X arg2,Y arg3) { Delegate d; if (m_EventTable.TryGetValue(eventType, out d)) { CallBack
                                              
                                                callBack = d as CallBack
                                               
                                                ; if (callBack != null) { callBack(arg1, arg2,arg3); } else { throw new Exception(string.Format("广播事件错误：事件{0}对应委托具有不同的类型", eventType)); } } } public static void Broadcast
                                                
                                                 (EventType eventType, T arg1, X arg2, Y arg3,Z arg4) { Delegate d; if (m_EventTable.TryGetValue(eventType, out d)) { CallBack
                                                 
                                                   callBack = d as CallBack
                                                  
                                                   ; if (callBack != null) { callBack(arg1, arg2, arg3,arg4); } else { throw new Exception(string.Format("广播事件错误：事件{0}对应委托具有不同的类型", eventType)); } } } public static void Broadcast
                                                   
                                                    (EventType eventType, T arg1, X arg2, Y arg3, Z arg4,W arg5) { Delegate d; if (m_EventTable.TryGetValue(eventType, out d)) { CallBack
                                                    
                                                      callBack = d as CallBack
                                                     
                                                      ; if (callBack != null) { callBack(arg1, arg2, arg3, arg4,arg5); } else { throw new Exception(string.Format("广播事件错误：事件{0}对应委托具有不同的类型", eventType)); } } }}