标签：ios 状态栏
if ([self respondsToSelector:@selector(setNeedsStatusBarAppearanceUpdate)]) {}
或者设置plist文件全局
设置key：Status bar is initially hidden YES
设置key：View controller-based status bar appearance NO
标签：ios 状态栏
原文地址：http://blog.csdn.net/sunyuanyang625/article/details/24702745
