Unity AssetBundle使用(支持安卓手机)

1、打包

打图集 

打预制体

 打图片

 打AB包 

所有打出来的包都存到 Assets/StreamingAssets 目录下

using UnityEditor;
public class CreateAssetBundles
{
    [MenuItem("Assets/Build AssetBundles")]
    static void BuildAllAssetBundles()
    {
        BuildPipeline.BuildAssetBundles("Assets/StreamingAssets", BuildAssetBundleOptions.ChunkBasedCompression, BuildTarget.Android);
    }
}

2、加载和读取

using System.Collections;
using System.Collections.Generic;
using System.IO;
using UnityEngine;
using UnityEngine.Networking;
using UnityEngine.U2D;
using UnityEngine.UI;

public class test1 : MonoBehaviour
{
    public Image pic;
    void Start()
    {
        //加载预制
        var myLoadedAssetBundle = AssetBundle.LoadFromFile(Path.Combine(Application.streamingAssetsPath, "texture"));
        if (myLoadedAssetBundle == null)
        {
            Debug.Log("Failed to load AssetBundle!");
            return;
        }
        var prefab = myLoadedAssetBundle.LoadAsset<GameObject>("Texture");
        Instantiate(prefab);

        //加载图片
        myLoadedAssetBundle = AssetBundle.LoadFromFile(Path.Combine(Application.streamingAssetsPath, "img"));
        if (myLoadedAssetBundle == null)
        {
            Debug.Log("Failed to load AssetBundle!");
            return;
        }
        var sprite = myLoadedAssetBundle.LoadAsset<Sprite>("1");
        pic.sprite = sprite;

        //加载图集
        myLoadedAssetBundle = AssetBundle.LoadFromFile(Path.Combine(Application.streamingAssetsPath, "imgs"));
        if (myLoadedAssetBundle == null)
        {
            Debug.Log("Failed to load AssetBundle!");
            return;
        }
        var spriteAtlas = myLoadedAssetBundle.LoadAsset<SpriteAtlas>("11");
        sprite = spriteAtlas.GetSprite("2");
        pic.sprite = sprite;
    }

    void Update()
    {
        
    }
}

预制体打包时图集里资源会不显示，需要创建一个常驻的监听类

Const.Bundle_SpriteAtlas 是图集打包的名字，预制体里的图集必须打包。

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using System.Linq;
using System.IO;
using UnityEngine.U2D;

public class SpriteAtlasLoader : MonoSingleton<SpriteAtlasLoader>
{
    protected override void Awake()
    {
        base.Awake();

        SpriteAtlasManager.atlasRegistered += AtlasRegistered;
        SpriteAtlasManager.atlasRequested += AtlasRequested;
    }

    void AtlasRegistered(SpriteAtlas spriteAtlas)
    {
        //Debug.LogFormat("AtlasRegistered tag={0}.", spriteAtlas.tag);
    }

    void AtlasRequested(string tag, System.Action<SpriteAtlas> callback)
    {
        float startTime = Time.realtimeSinceStartup;

        var assetName = string.Format("{0}.spriteatlas", tag);
        var bundle = AssetBundle.LoadFromFile(Path.Combine(Application.streamingAssetsPath, Const.Bundle_SpriteAtlas));
        var spriteAtlas = bundle.LoadAsset<SpriteAtlas>(assetName);
        //var spriteAtlas = (SpriteAtlas)BundleManager.Instance.LoadBundle(Const.SPRITE_ATLAS_BASE_PATH, assetName);
        //Debug.LogFormat("//AtlasRequested tag={0}, loading time={1:N8}", tag, (Time.realtimeSinceStartup - startTime));

        callback(spriteAtlas);
    }

}