在Unity的开发中，单例模式是最经常使用的设计模式之一，在每个模块开发中，如果都单独去实现单例模式，会很繁琐，所以实现一个Singleton类，每个需要实现单例模式的模块只需要集成自该类，即可。
/*
* Name: SingletonManager.cs
* Function: N/A
*
* Ver 变更日期 负责人 变更内容
* ──────────────────────────────────────────────────────────────────────
* V1.0.0 $time$ http://blog.csdn.net/husheng0
*
* Copyright (c). All rights reserved.
*
* 单例类
*
*/
using UnityEngine;
using System.Collections;
/// <summary>
/// 单例管理类的实现，不继承Monobehaviour
/// </summary>
/// <typeparam name="T"></typeparam>
public class SingletonManager<T> where T : class,new()
{
protected static T instance = null;
public static T Instance
{
get
{
if (null == instance)
{
instance = new T(); //调用构造函数
}
return instance;
}
}
/// <summary>
/// SingletonManager构造函数
/// </summary>
protected SingletonManager()
{
if (null != instance)
Debug.Log("This " + (typeof(T)).ToString()
+ " Singleton Instance is not null！");
Init();
}
public virtual void Init() { }
}
/*
* Name: MonoSingletonManager.cs
* Function: N/A
*
* Ver 变更日期 负责人 变更内容
* ──────────────────────────────────────────────────────────────────────
* V1.0.0 $time$ http://blog.csdn.net/husheng0
*
* Copyright (c). All rights reserved.
*
* 单例类
*
*/
using UnityEngine;
using System.Collections;
/// <summary>
/// 单例管理类的实现，继承Monobehaviour
/// 该类会在Hierarchy下创建"___MonoSingleton"并把所有的集成MonoSingletonManager的脚本添加到"___MonoSingleton"上
/// </summary>
/// <typeparam name="T"></typeparam>
public class MonoSingletonManager<T> : MonoBehaviour where T : MonoSingletonManager<T>
{
private static T instance = null;
public static T Instance
{
get
{
if (null == instance)
{
GameObject go = GameObject.Find("___MonoSingleton");
if (null == go)
{
go = new GameObject("___MonoSingleton");
DontDestroyOnLoad(go);
}
instance = go.AddComponent<T>();
}
return instance;
}
}
/// <summary>
/// Raises the application quit event.
/// </summary>
private void OnApplicationQuit()
{
instance = null;
}
}