一共分为两个类，SubPool与ObjectPool，SubPool类为总对象池包含ObjectPool的子池子，ObjectPool包含需要入池的对象。

调用方法：

• 入池：ObjectPool.Instance.Spawn()
• 出池：ObjectPool.Instance.UnSpawn()
• 全部出池：ObjectPool.Instance.UnSpawnAll()
• 销毁池子：ObjectPool.Instance.DisPool();

SubPool类(继承至单例父类)

using UnityEngine;
using System.Collections;
using System.Collections.Generic;

public class SubPool
{
    List<GameObject> Pool=new List<GameObject>();

    /// <summary>
    /// 入池
    /// </summary>
    public GameObject Spawn(string obj)
    {
            foreach (GameObject item in Pool)
            {
                if (!item.activeSelf)
                {
                    item.SetActive(true);
                    item.SendMessage("Spawn",SendMessageOptions.DontRequireReceiver);
                    return item;
                }
            }
        GameObject go = CreateObj(obj);
        Pool.Add(go);
       go.SendMessage("Spawn",SendMessageOptions.DontRequireReceiver);
        return go;
    }

/// <summary>
/// 出池
/// </summary>
/// <param name="go"></param>
 public void UnSpawn(GameObject go=null,string goname="")
    {
        if (go!=null)
        {
            go.SetActive(false);
        }
        else
        {
            for (int i = 0; i < Pool.Count; i++)
            {
                if (Pool[i].activeSelf)
                {
                    Pool[i].SetActive(false);
                    return;
                }
            }
        }
    }

/// <summary>
/// 全部出池
/// </summary>
public void UnSpawnAll()
    {
        foreach (GameObject item in Pool)
        {
            item.SetActive(false);
        }
    }

    /// <summary>
    /// 创建对象
    /// </summary>
    GameObject CreateObj(string obj)
    {
        GameObject go = GameObject.Instantiate(Resources.Load("Prefabs/Others/"+obj) as GameObject);
        go.transform.SetParent(GameObject.Find("Pool").transform, false);
        go.name = go.name.Replace("(Clone)", "");
        return go;
    }
}

ObjectPool类

using UnityEngine;
using System.Collections;
using System.Collections.Generic;
using Framework;

public class ObjectPool:Manager<ObjectPool>
{
    ObjectPool()
    {
    }

    Dictionary<string,SubPool> pools= new Dictionary<string, SubPool>();
    
    /// <summary>
    /// 入池
    /// </summary>
    /// <param name="obj">创建的对象名</param>
    public GameObject Spawn(string obj)
    {
            if (pools.ContainsKey(obj))
            {
                return pools[obj].Spawn(obj);
            }
            else
            {
                SubPool sp = new SubPool();
               var go = sp.Spawn(obj);
                pools.Add(obj, sp);
                return go;
            }
        return null;
    }

    /// <summary>
    /// 出池
    /// </summary>
    /// <param name="go">需要出池对象</param>
    public void UnSpawn(GameObject go=null,string goName="")
    {
        if (!go)
        {
            if (pools.ContainsKey(goName))
            {
                pools[goName].UnSpawn(null,goName);
            }
        }
        else
        {
            if (pools.ContainsKey(go.name))
            {
                pools[go.name].UnSpawn(go);
            }
        }

    }

    /// <summary>
    /// 全部出池
    /// </summary>
    /// <param name="pool">出池的名称</param>
    public void UnSpawnAll(string pool)
    {
        if (pools.ContainsKey(pool))
        {
            pools[pool].UnSpawnAll();
        }
    }

    /// <summary>
    /// 销毁池子
    /// </summary>
    /// <param name="pool">销毁池的名称</param>
    public void DisPool(string pool)
    {
        if (pools.ContainsKey(pool))
        {
            pools.Remove(pool);
        }
    }


}