参考：
目录结构参考Ext经典目录，此处不在截图。
1，打开Ext的动态加载机制，在app.js首部加入如下代码：
Ext.Loader.setConfig({ enabled: true}); 2，确保已经定义Controller类，比如定义一个叫Menu的Controller。方法如下
$touch app/controller/Menu.js && vi app/controller/Menu.js
Menu.js:
Ext.define('Appname.controller.Menu', { extend: 'Ext.app.Controller', // leave it as it is models: ['Event','User'], // this assumes App.model.* prefix stores: ['Options','Permissions'], // this assumes App.store.* prefix views: ['menu.Bar','SmartButton'],// this assumes App.view.* prefix requires: [ 'App.whatever.other.class', // auto-load this class as a dependency 'WidgetsLibrary.*', // auto-load all classes in WidgetsLibrary ], init: function(){} // [...] 3. 动态加载。方法如下：
Ext.require( 'App.controller.Menu', // this auto-loads all dependencies function(){ // ... as soon as this class // and all its dependencies have loaded... var controller = Ext.create('App.controller.Menu'); // create an instance controller.init(); // launch init() method }); 如果需要判断，是否已经加载Menu。可使用
if(Ext.ClassManager.isCreated('App.controller.Menu')){ // ... controller has already been loaded and init ... }else{ // we need to auto-load that controller using Ext.require()} 更多内容： api:
程序结构：