平台判断辅助工具类：PlatformHelper.ts

assets/Scripts/Sub/GameEntry.ts

@@ -1,6 +1,7 @@
 import { _decorator, assetManager, Component, game, macro, sys } from "cc";
 import { SDKManager } from "../Main/Channel/SDKManager";
 import PlayerDataManager from "../Main/Manager/PlayerDataManager";
+import { PlatformHelper } from "../Main/Channel/PlatformHelper";
 
 const { ccclass, property } = _decorator;
 
@@ -14,7 +15,7 @@ export class GameEntry extends Component {
 
         assetManager.downloader.maxConcurrency = 20;
         assetManager.downloader.maxRequestsPerFrame = 10;
-        if (sys.platform == sys.Platform.WECHAT_GAME) {
+        if (PlatformHelper.isWechat()) {
             assetManager.cacheManager.cacheEnabled = true;
             macro.CLEANUP_IMAGE_CACHE = true;
             // DynamicAtlasManager.instance.enabled = false;   //关闭动态图集