加载AssetBundle方法

先介绍一种常用的加载AssetBundle方法

using UnityEngine;
using System.Collections;
using System.IO;
public class LoadUnity3d : MonoBehaviour
{      // Use this for initialization
    void Start()
    {
        StartCoroutine(LoadScene());
    }
    // Update is called once per frame
    void Update()    
　　 {   　　 }
    IEnumerator LoadScene()     {
        //文件路径，也就是我们打包的那个
        WWW www = new WWW("file:///" + Application.dataPath + "/Bundles/My Prefab.unity3d");
        yield return www;
        Instantiate(www.assetBundle.mainAsset);
    }
}

第二种，将www文件读成字节进行同步加载

 using UnityEngine;
 using System.Collections; public class ExampleClass : MonoBehaviour
 {
     /// <summary>
     /// 返回字节数组
     /// </summary>
     /// <param name="binary"></param>
     /// <returns></returns>
     byte[] MyDecription(byte[] binary)
     {
         byte[] decrypted;
         return decrypted;
     }
     IEnumerator Start()
     {
         WWW www = new WWW("http://myserver/myBundle.unity3d");  //带有后缀的文件路径，可以是网络也可以是本地
         yield return www;
         byte[] decryptedBytes = MyDecription(www.bytes);    //返回字节数组
         AssetBundle assetBundle = AssetBundle.LoadFromMemory(decryptedBytes);   //从内存中同步加载资源资源包
         yield return assetBundle;
         if (assetBundle != null)            //如果资源包不为空
         {
             Instantiate(assetBundle.LoadAsset<GameObject>("myBundle");   //根据名字从资源包中加载对应资源
         }
     }
 }

第三种 异步

 using UnityEngine;
 using System.Collections; public class ExampleClass : MonoBehaviour
 {
     /// <summary>
     /// 返回字节数组
     /// </summary>
     /// <param name="binary"></param>
     /// <returns></returns>
     byte[] MyDecription(byte[] binary)
     {
         byte[] decrypted;
         return decrypted;
     }
     IEnumerator Start()
     {
         WWW www = new WWW("http://myserver/myBundle.unity3d");  //带有后缀的文件路径，可以是网络也可以是本地
         yield return www;
         byte[] decryptedBytes = MyDecription(www.bytes);    //返回字节数组
         AssetBundleCreateRequest bundle = AssetBundle.LoadFromMemoryAsync(decryptedBytes);//从内存中异步加载资源资源包
         yield return bundle;
         if (bundle != null && bundle.assetBundle != null)
         {
             Instantiate(bundle.assetBundle.LoadAsset<GameObject>("myBundle"));//根据名字从资源包中加载对应资源
         }
     }
 }

下面贴上项目中使用的方法 和异步加载很像，只是有些简单的实现进行了封装

   private IEnumerator LoadBundle(ModelGouJian _model)
     {
         string filePath = string.Format("{0}/_lesson/ModelFbx/{1}/{2}.unity3d", PublicJs.Datapath, _model.JieDianID, _model.ModelFbx);
         byte[] decryptedData = FileHelp.Instance.GetFileTextByteEsc(filePath);      //返回字节数组
         AssetBundleCreateRequest bundle = AssetBundle.LoadFromMemoryAsync(decryptedData);   //从内存中加载资源包
         yield return bundle;
         if (bundle != null && bundle.assetBundle != null)
         {
             _model.ModelObj = Instantiate(bundle.assetBundle.LoadAsset<GameObject>(_model.ModelFbx));  //根据资源名加载资源包中资源。
             _model.ModelObj.name = _model.ModelFbx;
             _model.ModelObj.transform.localPosition = new Vector3(, , );
             if (_model.ModelObj.name != gouJianData.CurSelectGouJian.ModelFbx) { _model.ModelObj.SetActive(false); }
             bundle.assetBundle.Unload(false);
             bundle = null;
         }
         else
         {
             LogHelp.Write("模型下载错误：{0}", filePath);
         }
         yield return new WaitForSeconds(0.5f);
         iNum++;
         //判断模型是否下载完成
         if (IsLoadModel == true && iNum == iCount)
         {
             IsLoadModel = false;
             this.LoadModelEnd();
         }
     }

对加载AssetBundle做一小结，以后补充。

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2016年12月22日