1.launch.js代碼：
// launch: update filesvar __failCount = 0;var AssetsManager = cc.Scene.extend({ _am: null, _progress: null, _percent: 0, _percentByFile: 0, run: function () { // windows may not need update var not_update; if (cc.sys.os == sys.OS_WINDOWS) { not_update = 1; } if (not_update || !cc.sys.isNative) { this.loadGame(); return; } var layer = new cc.Layer(); this.addChild(layer); this._progress = new cc.LabelTTF.create(下載進度：0%, Arial, 12); this._progress.x = cc.winSize.width / 2; this._progress.y = cc.winSize.height / 2 + 50; layer.addChild(this._progress); // android: /data/data/com.huanle.magic/files/ var storagePath = (jsb.fileUtils ? jsb.fileUtils.getWritablePath() : ./);// storagePath表示本地的儲存目錄，更新的檔案將下載到此目錄下，程式載入指令碼和資源時，也將優先從此目錄查詢 this._am = new jsb.AssetsManager(res/project.manifest, storagePath); this._am.retain(); if (!this._am.getLocalManifest().isLoaded()) { cc.log(Fail to update assets, step skipped.); this.loadGame(); } else { var that = this; var listener = new jsb.EventListenerAssetsManager(this._am, function (event) { switch (event.getEventCode()) { case jsb.EventAssetsManager.ERROR_NO_LOCAL_MANIFEST: cc.log(No local manifest file found, skip assets update.); that.loadGame(); break; case jsb.EventAssetsManager.UPDATE_PROGRESSION: that._percent = event.getPercent(); that._percentByFile = event.getPercentByFile(); cc.log(that._percent + %); var msg = event.getMessage(); if (msg) { cc.log(msg); } break; case jsb.EventAssetsManager.ERROR_DOWNLOAD_MANIFEST: case jsb.EventAssetsManager.ERROR_PARSE_MANIFEST: cc.log(Fail to download manifest file, update skipped.); that.loadGame(); break; case jsb.EventAssetsManager.ALREADY_UP_TO_DATE: case jsb.EventAssetsManager.UPDATE_FINISHED: cc.log(Update finished.); that.loadGame(); break; case jsb.EventAssetsManager.UPDATE_FAILED: cc.log(Update failed. + event.getMessage()); __failCount++; if (__failCount < 5) { that._am.downloadFailedAssets(); } else { cc.log(Reach maximum fail count, exit update process); __failCount = 0; that.loadGame(); } break; case jsb.EventAssetsManager.ERROR_UPDATING: cc.log(Asset update error: + event.getAssetId() + , + event.getMessage()); that.loadGame(); break; case jsb.EventAssetsManager.ERROR_DECOMPRESS: cc.log(event.getMessage()); that.loadGame(); break; default: break; } }); cc.eventManager.addListener(listener, 1); this._am.update(); cc.director.runScene(this); } this.schedule(this.updateProgress, 0.5); }, loadGame: function () { cc.loader.loadJs([src/game.js], function (err) { if (err) { cc.log(error: + err); } else { // run game logic game.run(); } }); }, updateProgress: function (dt) { this._progress.string = 下載進度： + this._percent + %; }, onExit: function () { this._am.release(); this._super(); }});
更新完後會載入src/game.js，然後game.run跑遊戲的主邏輯，所有邏輯從那裡開始就可以了。
2.設定檔
在用戶端的res目錄下添加project.manifest：
{ packageUrl : http://192.168.1.103/bw, remoteManifestUrl : http://192.168.1.103/bw/project.manifest, remoteVersionUrl : http://192.168.1.103/bw/version.manifest, version : 1.0.0, groupVersions : { 1 : 1.0.0 } }
服務端可用everything搭建http做測試：
project.manifest：
{ packageUrl : http://192.168.1.103/bw, remoteManifestUrl : http://192.168.1.103/bw/project.manifest, remoteVersionUrl : http://192.168.1.103/bw/version.manifest, version : 1.0.5, groupVersions : { 1 : 1.0.5 }, engineVersion : 3.0 rc0, assets : { src/app.zip : {md5 : 6809C100A369FD8A79A97208B0278A2B, compressed : true, group : 1 } }, searchPaths : [ src/] }
version.manifest：
{packageUrl : http://192.168.1.103/bw,remoteManifestUrl : http://192.168.1.103/bw/project.manifest,remoteVersionUrl : http://192.168.1.103/bw/version.manifest,version : 1.0.5,groupVersions: {1 : 1.0.5},engineVersion : 3.0 rc0}
做增量包的話要用groupVersions，可以參見www.bkjia.com
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