摘要：
1，首先//定义宏，判断ios7#define IOS7 [[[UIDevice currentDevice]systemVersion] floatValue] >= 7.0//添加代码if (IOS7){ self.edgesForExtendedLayout = UIRectEdgeNone; //视图控制器，四条边不指定 self.extendedLayoutIncludesOpaqueBars = NO; //不透明的操作栏 self.modalPresentationCapturesStatusBarAp... 阅读全文