Unity -- AssetBundle(本地资源加载和加载依赖关系)

1.本地资源加载

1).建立Editor文件夹

2).建立StreamingAssets文件夹和其Windows的子文件夹

将下方第一个脚本放入Editor 里面

脚本一  资源打包AssetBundle的所有标签资源

using UnityEngine;
using UnityEditor;

public class Tools
{
    [MenuItem("Tools/buildAB")] //编辑器扩展
    public static void Building()
    {
        Debug.LogError("111");
        string _adPath = Application.streamingAssetsPath + "\Windows";//路径
        BuildPipeline.BuildAssetBundles(_adPath, BuildAssetBundleOptions.None, BuildTarget.StandaloneLinux64);
        //自动检测有AssetBundle标签的预制体,并进行资源压缩.  //固定格式
    }

}

资源加载

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

public class Load2 : MonoBehaviour {

    // Use this for initialization
    void Start ()
    {
        //本地必须加入 file:// 这样子www才能进行访问
        string _abpath ="file://" +Application.streamingAssetsPath + "/Windows/sp";

        StartCoroutine("Creat",_abpath);
    }
    // Update is called once per frame
    void Update ()
    {
    }
    IEnumerator Creat(string path)
    {
        using (WWW lo=new WWW(path))
        {
            yield return lo;
            if (lo != null)
            {
                AssetBundle ab = lo.assetBundle;
                if (ab != null)
                {
                    GameObject obj = ab.LoadAsset<GameObject>("Cube");
                    Instantiate(obj);
                }
            }
            else {
                Debug.LogError("加载失败");
            }
        }
    }

2.加载依赖关系

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class LoadManCtr : MonoBehaviour {
    // Use this for initialization
    public string ABName;
    string _abPath;
    string _manpath;
    private List<AssetBundle> ManListAB;
    void Start ()
    {
        ManListAB = new List<AssetBundle>();
        _abPath = Application.streamingAssetsPath + "/Windows/";
        _manpath = Application.streamingAssetsPath + "/Windows/Windows";
        //查找依赖关系
        #region 加载依赖
        AssetBundle _manAB = AssetBundle.LoadFromFile(_manpath);
        //固定格式
        AssetBundleManifest manifest = _manAB.LoadAsset<AssetBundleManifest>("AssetBundleManifest");
        string[] dependencies = manifest.GetAllDependencies(ABName);
        Debug.LogError(dependencies.Length);
        //加载依赖
        if (dependencies.Length != 0)
        {
            foreach (string s in dependencies)
            {
                Debug.Log(s);
                //挨个加载依赖关系
                ManListAB.Add(LoadABByName(s)); //存在内存中
            }
        }
        #endregion
        //依赖加载完毕  圆柱 立方体
        AssetBundle _ab = AssetBundle.LoadFromFile(_abPath + ABName);
        GameObject copyObj = _ab.LoadAsset<GameObject>("Capsule");
        Instantiate(copyObj);
        //释放ab依赖的内存
        foreach (var v in ManListAB)
        {
            v.Unload(false);
        }
        _ab.Unload(false);//不从场景里面删除
        //true 场景删除
        AssetBundle _ab01 = AssetBundle.LoadFromFile(_abPath + ABName);//_ab.Unload(false); 没有这句话会重复加载
        GameObject copyObj01 = _ab01.LoadAsset<GameObject>("Capsule");
        Instantiate(copyObj01,Vector3.one,Quaternion.identity);
    }
    // Update is called once per frame
    void Update ()
    {
    }
    private AssetBundle LoadABByName(string name)
    {
        return AssetBundle.LoadFromFile(_abPath + name);
    }
}