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(0, 0, 0);
            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