float ver =[[[UIDevice currentDevice] systemVersion] floatValue];
if(ver>=7.0)
{
self.edgesForExtendedLayout =UIRectEdgeNone;
self.automaticallyAdjustsScrollViewInsets = NO;
}
适配iOS7uinavigationbar遮挡tableView的问题
原文：http://my.oschina.net/u/1781028/blog/406711