Unity AssetBundle的幾個加載方式

 

 

string path = @"AssetBundles/scene/cubewall.ab";
string cacheDownloadPath = @"file://D:\UnityWorkSpace\FifthMonthWork_Groups\AssetBundle_Demo\AssetBundles\scene\cubewall.ab";
string tempWebAddress = @"http://localhost/AssetBundles/scene/wall.ab";

//第一種加載AB的方式，異步進行加載從二進制文件中
IEnumerator LoadAB()
{
　　AssetBundleCreateRequest request = AssetBundle.LoadFromMemoryAsync(File.ReadAllBytes(path));
　　yield return request;
　　AssetBundle ab = request.assetBundle;
　　GameObject wallPrefab = ab.LoadAsset<GameObject>("CubeWall");
　　Instantiate(wallPrefab);
}

//第二種進行資源加載，同步加載
　　Instantiate(AssetBundle.LoadFromMemory(File.ReadAllBytes(path)).LoadAsset<GameObject>("CubeWall"));

 

//第三種加載AB的方式，LoadFromFile【從文件進行加載】
　　AssetBundle ab = AssetBundle.LoadFromFile("AssetBundles/scene/wall.ab");
　　GameObject wallPrefab = ab.LoadAsset<GameObject>("Wall");
　　Instantiate(wallPrefab);

 

//第四種加載AB的方式，LoadFromFileAsync【從文件進行異步加載】
IEnumerator LoadFileAsync()
{
　　AssetBundleCreateRequest request = AssetBundle.LoadFromFileAsync(path);
　　yield return request;

　　AssetBundle ab = request.assetBundle;
　　Instantiate(ab.LoadAsset<GameObject>("CubeWall"));
}

 

//第五種加載AB的方式，WWW.LoadFromCacheOrDownload - 從緩存中加載和下載

IEnumerator LoadCacheOrDownloadFromFile(string path)
{
　　while (Caching.ready == false)
　　yield return null;

　　WWW www = WWW.LoadFromCacheOrDownload(path, 1);
　　yield return www;

　　if( !string.IsNullOrEmpty(www.error) )
　　{
　　　　Debug.Log(www.error);
　　　　yield break;
　　}
　　AssetBundle ab = www.assetBundle;
　　GameObject wallPrefab = ab.LoadAsset<GameObject>("CubeWall");
　　Instantiate(wallPrefab);
}

 

//第六種加載AB的方式，UnityWebRequest，網頁請求進行加載【第一種方法】
IEnumerator UseUnityWebRequest(string path)
{
//1、使用UnityWebRequest.GetAssetBundle(路徑)【服務器 / 本地都可以】 去獲取到網頁請求
　　UnityWebRequest request = UnityWebRequest.GetAssetBundle(path);
//2、等待這個請求進行發送完
　　yield return request.SendWebRequest();
//3、發送完請求之后，就要從DownloadHandlerAssetBundle進行獲取一個request，得到出來的是一個AssetBundle類對象
　　AssetBundle ab = DownloadHandlerAssetBundle.GetContent(request);
//4、用獲取到的AssetBundle對象去加載資源泛型是GameObject
　　GameObject obj = ab.LoadAsset<GameObject>("Wall");
//5、實例化出這個GameObject對象
　　Instantiate(obj);
}

 

//第六種加載AB的方式，UnityWebRequest，網頁請求進行加載【第二種方法】
IEnumerator UseUnityWebRequest2(string path)
{
　　UnityWebRequest request = UnityWebRequest.GetAssetBundle(path);

　　yield return request.SendWebRequest();

　　AssetBundle ab = (request.downloadHandler as DownloadHandlerAssetBundle).assetBundle;

　　GameObject obj = ab.LoadAsset<GameObject>("Wall");

　　Instantiate(obj);
}

讀取Manifest文件，獲取它們的依賴關系並且加載出來

AssetBundle manifestAB = AssetBundle.LoadFromFile("AssetBundles/AssetBundles");
AssetBundleManifest manifest = manifestAB.LoadAsset<AssetBundleManifest>("AssetBundleManifest");
string[] strArr = manifest.GetAllDependencies("scene/cubewall.ab");
foreach (var item in strArr)
{
　　AssetBundle.LoadFromFile("AssetBundles/" + item);
}

【待繼續往后寫】