加入SingletonPatternExample3-抽象泛型单例基类

加入SingletonPatternExample3-抽象泛型单例基类

Author: QianMo

Assets/Creational Patterns/Singleton Pattern/Example3.meta

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+//-------------------------------------------------------------------------------------
+//	SingletonPatternExample3.cs
+//-------------------------------------------------------------------------------------
+
+using UnityEngine;
+using System.Collections;
+
+namespace SingletonPatternExample3
+{
+
+ public class SingletonPatternExample3 : MonoBehaviour
+ {
+ void Start()
+ {
+ //单例A
+ SingletonA.Instance.DoSomething();
+
+ //单例B
+ SingletonB.Instance.DoSomething();
+ }
+
+ }
+
+ /// <summary>
+ /// 单例类基类（抽象类、泛型，其他类只需继承此类即可成为单例类）
+ /// 继承该类的，即成为一个单例类
+ /// </summary>
+ public abstract class Singleton<T>
+ where T : class, new()
+ {
+ private static T _instance = null;
+
+ public static T Instance
+ {
+ get
+ {
+ if (_instance == null)
+ {
+ _instance = new T();
+ return _instance;
+ }
+ return _instance;
+ }
+ }
+
+ protected virtual void Awake()
+ {
+ _instance = this as T;
+ }
+ }
+
+
+ /// <summary>
+ /// 继承自Singleton<T>的单例
+ /// </summary>
+ public class SingletonA : Singleton<SingletonA>
+ {
+ public void DoSomething()
+ {
+ Debug.Log("SingletonA:DoSomething!");
+ }
+ }
+
+ /// <summary>
+ /// 继承自Singleton<T>的单例
+ /// </summary>
+ public class SingletonB : Singleton<SingletonB>
+ {
+ public void DoSomething()
+ {
+ Debug.Log("SingletonB:DoSomething!");
+ }
+ }
+
+
+}