No class named AppDelegate is loaded.'

环境：phonegap+sencha touch开发ios应用

前几天项目都还好好的，今天就突然无法运行，报错'Unable to instantiate the UIApplication delegate instance. No class named AppDelegate is loaded.'

在网上 http://stackoverflow.com/questions/10778000/ios-unable-to-instantiate-the-uiapplication-delegate-instance找到答案



在Compile Sources的下方加号处添加缺少的文件