Unity Singleton 单例类(Unity3D开发)

一、添加单例模板类

 using UnityEngine;

 public class Singleton<T> : MonoBehaviour where T : MonoBehaviour
 {
     private static T _instance;

     private static object _lock = new object ();

     public static T Instance
     {
         get {
             if (applicationIsQuitting) {
                 return null;
             }

             lock (_lock) {
                 if (_instance == null) {
                     _instance = (T)FindObjectOfType (typeof(T));

                     if (FindObjectsOfType (typeof(T)).Length > ) {
                         return _instance;
                     }

                     if (_instance == null) {
                         GameObject singleton = new GameObject ();
                         _instance = singleton.AddComponent<T> ();
                         singleton.name = "(singleton) " + typeof(T).ToString ();

                         DontDestroyOnLoad (singleton);
                     }
                 }

                 return _instance;
             }
         }
     }

     private static bool applicationIsQuitting = false;

     public void OnDestroy ()
     {
         applicationIsQuitting = true;
     }
 }

这是一个单例模板类，使用就很简单了。

二、定义自己的单例类

 using UnityEngine;
 using System.Collections;

 public class InstanceTest : Singleton<InstanceTest>
 {
     internal string mName = "InstanceTest";
 }

三、调用使用

 Debug.Log(InstanceTest.Instance.mName);

打印

以上根据某社区的文章练习代码，Unity版本5.4.4，使用正常

参考文章：Cocos2Der-CSDN http://blog.csdn.net/cocos2der/article/details/47335197