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android集成unity后动态导入 assetsBundle

news 2025/9/4 12:36:06

1、Unity 中创建空物体 BundleLoader 并挂载脚本

using System.Collections;
using System.Diagnostics;
using System.IO;
using UnityEngine;
using static System.Net.Mime.MediaTypeNames;public class LoadSphereBundle : MonoBehaviour
{void Start(){StartCoroutine(LoadSphere());// 测试 Android 或 Editor//#if UNITY_EDITOR//            string path = UnityEngine.Application.dataPath + "/AssetBundles/Android/spherebundle";//#else//        string path = UnityEngine.Application.persistentDataPath + "/spherebundle"; // Android 可读路径//#endif//        LoadSphereByPathBridge(path);}public IEnumerator LoadSphere(){// 正确的路径构建方式#if UNITY_EDITOR// 编辑器模式下的路径string path = UnityEngine.Application.dataPath + "/AssetBundles/Android/spherebundle";#else// 运行时模式下的路径（打包后）string path = UnityEngine.Application.streamingAssetsPath + "/spherebundle";#endifUnityEngine.Debug.Log("尝试从路径加载: " + path);// 加载 AssetBundleAssetBundle bundle = AssetBundle.LoadFromFile(path);if (bundle == null){UnityEngine.Debug.LogError("Failed to load spherebundle from: " + path);UnityEngine.Debug.Log("请确认文件是否存在且路径正确");yield break;}// 加载 prefabGameObject spherePrefab = bundle.LoadAsset<GameObject>("sphere");if (spherePrefab != null){Instantiate(spherePrefab, Vector3.zero, Quaternion.identity);UnityEngine.Debug.Log("成功加载并实例化 sphere prefab!");}else{UnityEngine.Debug.LogError("Failed to load prefab 'sphere' from bundle!");// 调试：列出bundle中所有资源UnityEngine.Debug.Log("Bundle中包含的资源:");foreach (string name in bundle.GetAllAssetNames()){UnityEngine.Debug.Log("- " + name);}}bundle.Unload(false);}// UnitySendMessage 调用入口public void LoadSphereByPathBridge(string path){UnityEngine.Debug.Log("LoadSphereByPathBridge,收到 UnitySendMessage 调用, 路径 = " + path);StartCoroutine(LoadSphereByPath(path));}public IEnumerator LoadSphereByPath(string path){UnityEngine.Debug.Log("尝试从路径加载: " + path);// 加载 AssetBundleAssetBundle bundle = AssetBundle.LoadFromFile(path);if (bundle == null){UnityEngine.Debug.LogError("Failed to load spherebundle from: " + path);UnityEngine.Debug.Log("请确认文件是否存在且路径正确");yield break;}// 加载 prefabGameObject spherePrefab = bundle.LoadAsset<GameObject>("sphere");if (spherePrefab != null){Instantiate(spherePrefab, Vector3.zero, Quaternion.identity);UnityEngine.Debug.Log("成功加载并实例化 sphere prefab!");}else{UnityEngine.Debug.LogError("Failed to load prefab 'sphere' from bundle!");// 调试：列出bundle中所有资源UnityEngine.Debug.Log("Bundle中包含的资源:");foreach (string name in bundle.GetAllAssetNames()){UnityEngine.Debug.Log("- " + name);}}bundle.Unload(false);}
}

2、android 中使用 UnitySendMessage 调用 LoadSphereByPathBridge方法加载 ab

(注意 assetsBundle 全部文件拷贝到 /storage/emulated/0/Android/data/com.example.dockwithtuanjie/files/ 目录下 )

package com.example.dockwithtuanjie// 在 app/src/main/java/你的包名/ 下创建 UnityFragment.kt   【step 1. 添加此文件】import android.os.Bundle
import android.util.Log
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.fragment.app.Fragment
import com.unity3d.player.UnityPlayerclass UnityFragment : Fragment() {// 移除 static，使用 lateinit 延迟初始化lateinit var mUnityPlayer: UnityPlayeroverride fun onCreate(savedInstanceState: Bundle?) {super.onCreate(savedInstanceState)// 初始化 UnityPlayer，使用 requireActivity() 作为 contextmUnityPlayer = UnityPlayer(requireActivity())}override fun onCreateView(inflater: LayoutInflater,container: ViewGroup?,savedInstanceState: Bundle?): View {val view = mUnityPlayer.view// 防止视图已有父布局的重要检查if (view.parent != null) {(view.parent as ViewGroup).removeView(view)}// 设置窗口焦点监听view.viewTreeObserver.addOnWindowFocusChangeListener { hasFocus ->mUnityPlayer.windowFocusChanged(hasFocus)}return view}override fun onResume() {super.onResume()mUnityPlayer.resume()}override fun onPause() {super.onPause()mUnityPlayer.pause()}override fun onDestroy() {super.onDestroy()mUnityPlayer.quit()}fun send(msg: String?) {Log.d("UnityFragment", "我是unityFragment, 收到调用--->>> : $msg")UnityPlayer.UnitySendMessage("AutoCubeRotator", "OnMsg", msg)val a = 0.5;UnityPlayer.UnitySendMessage("AutoCubeRotator", "OnMsgToTransform", a.toString() )//-------------------------------->>>>> 动态加载测试val bundlePath = context?.getExternalFilesDir(null)?.absolutePath + "/spherebundle"Log.d("UnityFragment", "我是unityFragment, 尝试加载bundle路径--->>> : $bundlePath")UnityPlayer.UnitySendMessage("BundleLoader", "LoadSphereByPathBridge", bundlePath)}
}