Unity AssetBundle的使用两种方法

资源大湿 · 发表于 2020-3-16 18:42

1、所有打包参数在代码里设置，完全代码控制；
第一种：

在代码中指定bundle包名，指定包含在该bundle里的所有资源路径
新建TestBundle.cs注意此脚本放在Editor文件夹下，
using UnityEngine;
using UnityEditor;
using System.IO;
[InitializeOnLoad]
public static class TestBundle
{
[MenuItem("AssetsBundle/Build Bundle -- 代码中设置参数")]
static void BuildAB()
{
      string path = Application.streamingAssetsPath + "/AssetsBundles/";

      if (Directory.Exists(path))
         Directory.Delete(path, true);
      Directory.CreateDirectory(path);

      AssetBundleBuild[] buildMap = new AssetBundleBuild[2];

      //指定bundle包名
      buildMap[0].assetBundleName = "prefab_bundle";

      string[] assets = new string[2];
      assets[0] = "Assets/AssetsBundleObj/Cube.prefab"; // 必须是完整的文件名（包括后缀）
      assets[1] = "Assets/AssetsBundleObj/Sphere.prefab";
      //指定bundle包含的资源路径数组
      buildMap[0].assetNames = assets;

      buildMap[1].assetBundleName = "scene_bundle";
      string[] scenes = new string[1];
      scenes[0] = "Assets/_Scenes/Scene.unity";
      buildMap[1].assetNames = scenes;

      BuildPipeline.BuildAssetBundles(path, buildMap, BuildAssetBundleOptions.DeterministicAssetBundle, BuildTarget.StandaloneWindows);
}
}

代码中设置参数

2、在编辑器中设置打包参数，代码简便
新建一个prefab，如下配置，一个名字，一个后缀

新建TestBundle.cs注意此脚本放在Editor文件夹下，代码如下：
using UnityEngine;
using UnityEditor;
using System.IO;

[InitializeOnLoad]
public static class TestBundle
{

[MenuItem("AssetsBundle/Build Bundle -- 编辑器中设置参数")]
static void BuildAB2()
{
      string path = Application.streamingAssetsPath + "/AssetsBundles/";

      if (Directory.Exists(path))
         Directory.Delete(path, true);
      Directory.CreateDirectory(path);

      BuildPipeline.BuildAssetBundles(path, BuildAssetBundleOptions.DeterministicAssetBundle, BuildTarget.StandaloneOSX);
}
} 再新建一个脚本AssetBundleTest.cs 代码如下， using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class AssetBundleTest : MonoBehaviour
{
public GameObject obj;
// Start is called before the first frame update
void Start()
{

}

// Update is called once per frame
void Update()
{

}
void OnGUI()
{
      if (GUILayout.Button("加载预制体Cube"))
      {
         StartCoroutine(LoadObj("cube_ab", "cube.prefab"));//有没有.prefab后缀都正常加载
      }
      if (GUILayout.Button("加载预制体Sphere"))
      {
         StartCoroutine(LoadObj("prefab_bundle", "sphere"));
      }
}
/// <summary>
/// 加载预制体
/// </summary>
/// <param name="name"></param>
/// <returns></returns>
IEnumerator LoadObj(string bundle_name, string name)
{
      string path = "file://" + Application.streamingAssetsPath + "/AssetsBundles/" + bundle_name;
      //Debug.LogError(string.Format("obj  {0}", path));
      WWW www = new WWW(path);
      yield return www;
      if (www.error == null)
      {
         AssetBundle bundle = www.assetBundle;
         //这里LoadAsset第二个参数有没有都能正常运行，这个类型到底什么用途还有待研究
            obj = Instantiate(bundle.LoadAsset(name, typeof(GameObject))) as GameObject;
         obj.transform.parent = transform;
         // 上一次加载完之后，下一次加载之前，必须卸载AssetBundle，不然再次加载报错：
         // The AssetBundle 'Memory' can't be loaded because another AssetBundle with the same files is already loaded
         bundle.Unload(false);
      }else
      {
         Debug.LogError(www.error);
      }
}

}
工具栏中会出现

点击生成bundle目录，会看到AssetBundle文件夹在StreamingAssets目录中，
将AssetBundleTest.js绑定到场景中运行，点击  “加载预制体Cube”  cube就会出现在场景中了。

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[基础] Unity AssetBundle的使用两种方法

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