第二種打包方式

Unity提供的BuildAssetBundles API還有一個過載形式，看下面↓↓

public static AssetBundleManifest BuildAssetBundles(string outputPath, AssetBundleBuild[] builds, BuildAssetBundleOptions assetBundleOptions, BuildTarget targetPlatform);

這個過載函式多了一個引數，這個引數是一個AssetBundleBuild陣列，下面我們來說說AssetBundleBuild是何方妖孽↓↓

AssetBundleBuild是一個結構體，有四個屬性，說明如下↓↓

一般情況下，只要設定AssetBundleBuild結構體中的assetBundleName屬性和assetNames屬性就可以了，如果你願意給打在AssetBundle包中的檔案重新命名的話，就設定一下addressableNames屬性，不想重新命名的檔案就給一個空字串，這樣預設就會使用assetNames了。要是還想設定自定義的字尾名，可以試試AssetBundleVariant。

有了AssetBundleBuild這樣一個結構體陣列做引數，這就意味著我們可以讓打包的過程更簡單了。不用在Inspector面板中給每一個需要打包的檔案設定AssetBundle名稱，我們可以直接在編輯器中滑鼠點選需要打包的檔案，然後一鍵打包。當然，這也就意味著我們不能隨意的控制每個AssetBundle包的名字了，有利有弊吧。

在這裡講一講打包的方式吧，我們可以把許多檔案打進一個AssetBundle包，也可以將每個檔案單獨打一個AssetBundle包，具體怎麼打就要看需求了。

下面是打包的程式碼↓↓

[MenuItem("AssetBundles/Buil (All)")]
private static void _packageBuddlesInOne() {
	string _packagePath = UnityEditor.EditorUtility.OpenFolderPanel ("Select Package Path", "F:/", "");
	if (_packagePath.Length <= 0 || !Directory.Exists (_packagePath))
		return;
	buildMap[0].assetBundleName = "myBnndle";
	//將選中物件一起打包
	AssertBundleAssetBundleBuild[] buildMap = new AssetBundleBuild[1];
	GameObject[] objs = Selection.gameObjects; //獲取當前選中的所有物件
	string[] itemAssets = new string[objs.Length];
	for (int i = 0; i < objs.Length; i++) {
		itemAssets [i] = AssetDatabase.GetAssetPath (objs [i]); //獲取物件在工程目錄下的相對路徑
	}
	buildMap [0].assetNames = itemAssets;
	AssetBundleManifest manifest = BuildPipeline.BuildAssetBundles (_packagePath, buildMap, BuildAssetBundleOptions.None, BuildTarget.StandaloneWindows64);
	AssetDatabase.Refresh (); //重新整理
	if (manifest == null)
		Debug.LogError("Package AssetBundles Faild.");
	else
		Debug.Log("Package AssetBundles Success.");
}
 

我們也可以將每個物件都打進不同的AssetBundle包，看程式碼↓↓

[MenuItem("AssetBundle/Build (Selected)")]
private static void _packageBuddleSelected() {
	string _packagePath = UnityEditor.EditorUtility.OpenFolderPanel ("Select Package Path", "F:/", "");
	if (_packagePath.Length <= 0 || !Directory.Exists (_packagePath))
		return;
	AssetBundleBuild[] buildMap = new AssetBundleBuild[objs.Length];
	GameObject[] objs = Selection.gameObjects;
	for (int i = 0; i < objs.Length; i++) {
		string[] itemAsset = new string[] { AssetDatabase.GetAssetPath (objs[i]) };
		buildMap[i].assetBundleName = objs[i].name;
		buildMap [i].assetNames = itemAsset;
	}
	AssetBundleManifest manifest = BuildPipeline.BuildAssetBundles (_packagePath, buildMap, BuildAssetBundleOptions.None, BuildTarget.StandaloneWindows64);
	AssetDatabase.Refresh ();
	if(menifest == null)
		Debug.LogError("Error:Package Failed");
	else
		Debug.Log("Package Success.");
}

按↑圖操作，就可以打包選中的檔案了。