unity 资源加载

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

public class LoadResources : MonoBehaviour {


    private void Start()
    {
        //   StartCoroutine("LoadAbAsync", "AssetBundles/test");
        // LoadAB("AssetBundles/test");

        // StartCoroutine("ServerLoading", @"file:/G:UnitySotfware\test\AssetBundles");

        GetAbManifest();
    }

    //加载方法，异步加载
    IEnumerator   LoadAbAsync(string AbPath)
    {

        if (File.Exists(AbPath))
        {

            //第一种加载AB的方式 ,从内存中加载 LoadFromMemory      
            AssetBundleCreateRequest request = AssetBundle.LoadFromMemoryAsync(File.ReadAllBytes(AbPath));
            yield return request;
            AssetBundle ab = request.assetBundle;
     
            GameObject cube = ab.LoadAsset<GameObject>("Cube");   //参数写的是物体名字

            Instantiate(cube);

        }else
        {
            Debug.LogWarning("没有文件");
        }       
        
    }


    // 第二种同步加载
    public void LoadAB(string AbPath)
    {
        if (File.Exists(AbPath))
        {
            AssetBundle ab = AssetBundle.LoadFromMemory(File.ReadAllBytes(AbPath));
            GameObject cube = ab.LoadAsset<GameObject>("Cube");
            Instantiate(cube);

        }else
        {
            Debug.LogWarning("没有文件");
        }


    }


    //服务器或本地加载   本地：@"file:/G:UnitySotfware\test\AssetBundles\"   服务器： @"http://localhost/AssetBundles/test"
    IEnumerator ServerLoading(string AbPath)
    {
        while (Caching.ready == false)
        {
            yield return null;
        }
      
        WWW www = WWW.LoadFromCacheOrDownload("G:UnitySotfware\\test\\AssetBundles", 1);    
        yield return www;
        //是否报错
        if (string.IsNullOrEmpty(www.error) == false)
        {
            Debug.Log(www.error); yield break;
        }
        AssetBundle ab = www.assetBundle;

      
        GameObject Cube = ab.LoadAsset<GameObject>("Cube");
        Instantiate(Cube);
    }

    public void GetAbManifest()
    {
        AssetBundle Ab = AssetBundle.LoadFromFile("AssetBundles/AssetBundles");

        AssetBundleManifest manifest = Ab.LoadAsset<AssetBundleManifest>("AssetBundleManifest");

        //得到全部资源包
       //foreach (string  name in manifest.GetAllAssetBundles())
       // {
       //     Debug.Log(name);
       // }

        //得到资源所依赖的资源包并加载
        string[] strs = manifest.GetAllDependencies("test");
        foreach (string name in strs)
        {
            print(name);
            AssetBundle.LoadFromFile("AssetBundles/" + name);
        }

    }


}