本篇文章由:http://www.sollyu.com/cocos2d-x-2-0-4-ios7-cannot-be-full-screen-problem/
▼ 症状如下图
打开你工程的.plist配置文件,然后添加View controller-based status bar appearance并且值为NO
.plist
View controller-based status bar appearance
NO
▼ 如图
▼ 再次运行程序,完美解决