Unity中EventManager事件管理器实现方式详解
发表于2018-05-18
上一篇给大家介绍了可以使用EventManager消息管理类处理各种事件，本篇就要和大家介绍下Unity事件管理器的两种实现方式了，第一种采用Unity事件系统API来实现，另一种可以使用C#的事件机制实现。对于这两种实现方式的详细分析如下：
第一种：采用Unity事件系统API来实现
这里的实现采用的是Unity官方教程的实现方式，采用的是单例模式。
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Events;
public class EventManager
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private Dictionary<string, UnityEvent> eventDictionary=new Dictionary<string, UnityEvent>();
private static EventManager eventManager = new EventManager();
private EventManager()
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public static EventManager GetInstance
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get
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return eventManager;
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public void StartListening(string eventName, UnityAction listener)
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UnityEvent thisEvent = null;
if (eventManager.eventDictionary.TryGetValue(eventName, out thisEvent))
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thisEvent.AddListener(listener);
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else
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thisEvent = new UnityEvent();
thisEvent.AddListener(listener);
eventManager.eventDictionary.Add(eventName, thisEvent);
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public void StopListening(string eventName, UnityAction listener)
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if (eventManager == null) return;
UnityEvent thisEvent = null;
if (eventManager.eventDictionary.TryGetValue(eventName, out thisEvent))
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thisEvent.RemoveListener(listener);
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public void TriggerEvent(string eventName)
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UnityEvent thisEvent = null;
if (eventManager.eventDictionary.TryGetValue(eventName, out thisEvent))
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thisEvent.Invoke();
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事件注册：
using UnityEngine;
using UnityEngine.Events;
using System.Collections;
public class EventTest : MonoBehaviour
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private UnityAction someListener;
void Awake()
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someListener = new UnityAction(SomeFunction);
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void OnEnable()
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EventManager.GetInstance.StartListening("test", someListener);
EventManager.GetInstance.StartListening("Spawn", SomeOtherFunction);
EventManager.GetInstance.StartListening("Destroy", SomeThirdFunction);
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void OnDisable()
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EventManager.GetInstance.StopListening("test", someListener);
EventManager.GetInstance.StopListening("Spawn", SomeOtherFunction);
EventManager.GetInstance.StopListening("Destroy", SomeThirdFunction);
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void SomeFunction()
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Debug.Log("Some Function was called!");
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void SomeOtherFunction()
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Debug.Log("Some Other Function was called!");
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void SomeThirdFunction()
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Debug.Log("Some Third Function was called!");
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事件触发：
using UnityEngine;
using System.Collections;
public class EventTriggerTest : MonoBehaviour
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void Update()
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if (Input.GetKeyDown("q"))
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EventManager.GetInstance.TriggerEvent("test");
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if (Input.GetKeyDown("o"))
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EventManager.GetInstance.TriggerEvent("Spawn");
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if (Input.GetKeyDown("p"))
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EventManager.GetInstance.TriggerEvent("Destroy");
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if (Input.GetKeyDown("x"))
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EventManager.GetInstance.TriggerEvent("Junk");
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第二种：通过C#事件机制实现
首先定义事件参数和事件
using System;
using System.Collections.Generic;
public class EventArg: EventArgs
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public string ArgName;
public Event_CallBack CallBack;
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public delegate void Event_CallBack(object _data = null);
然后定义事件管理器
using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Events;
public class EventManager
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//private Dictionary<string, UnityEvent> eventDictionary = new Dictionary<string, UnityEvent>();
/// <summary>
/// 事件缓存
/// </summary>
private List<EventArg> callbackList = new List<EventArg>();
private static EventManager eventManager = new EventManager();
private EventManager()
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public static EventManager GetInstance
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get
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return eventManager;
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/// <summary>
/// 添加事件监听
/// </summary>
/// <param name="eventName"></param>
/// <param name="listener"></param>
public void StartListening(string eventName, Event_CallBack listener)
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EventArg eventarg = callbackList.Find(a => a.ArgName == eventName);;
if (eventarg==null)
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eventarg = new EventArg();
eventarg.ArgName = eventName;
eventarg.CallBack = listener;
callbackList.Add(eventarg);
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else
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eventarg.CallBack += listener;
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/// <summary>
/// 移除事件监听
/// </summary>
/// <param name="eventName"></param>
/// <param name="listener"></param>
public void StopListening(string eventName, Event_CallBack listener)
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EventArg eventarg = callbackList.Find(a => a.ArgName == eventName); ;
if (eventarg != null)
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eventarg.CallBack -= listener;//移除监听
if (eventarg.CallBack == null)//该类型是否还有回调，如果没有，移除
callbackList.Remove(eventarg);
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/// <summary>
/// 触发事件
/// </summary>
/// <param name="eventName"></param>
public void TriggerEvent(string eventName,object sender)
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EventArg eventarg = callbackList.Find(a => a.ArgName == eventName); ;
if (eventarg == null)
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else
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eventarg.CallBack(sender);//传入参数，执行回调
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然后订阅事件
using UnityEngine;
using UnityEngine.Events;
using System.Collections;
using System;
public class EventTest : MonoBehaviour
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private Event_CallBack someListener;
void Awake()
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someListener = new Event_CallBack(SomeFunction);
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void OnEnable()
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EventManager.GetInstance.StartListening("test", someListener);
EventManager.GetInstance.StartListening("Spawn", SomeOtherFunction);
EventManager.GetInstance.StartListening("Destroy", SomeThirdFunction);
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void OnDisable()
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EventManager.GetInstance.StopListening("test", someListener);
EventManager.GetInstance.StopListening("Spawn", SomeOtherFunction);
EventManager.GetInstance.StopListening("Destroy", SomeThirdFunction);
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void SomeFunction(object sender)
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Debug.Log("Some Function was called!");
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void SomeOtherFunction(object sender)
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Debug.Log("Some Other Function was called!");
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void SomeThirdFunction(object sender)
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Debug.Log("Some Third Function was called!");
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最后触发事件
using UnityEngine;
using System.Collections;
public class EventTriggerTest : MonoBehaviour
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void Update()
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if (Input.GetKeyDown("q"))
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EventManager.GetInstance.TriggerEvent("test",this);
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if (Input.GetKeyDown("o"))
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EventManager.GetInstance.TriggerEvent("Spawn",this);
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if (Input.GetKeyDown("p"))
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EventManager.GetInstance.TriggerEvent("Destroy",this);
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if (Input.GetKeyDown("x"))
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EventManager.GetInstance.TriggerEvent("Junk",this);
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