问题
The Interface Builder in Xcode 5.1.1 displays Top Layout Guide and Bottom Layout Guides for View Controllers but apparently not for Table View Controllers.
Is this indeed (always) the case and what is the reason why?
回答1:
Because the layout guides are irrelevant in table view controllers. If you need to add other views to a table view controller, you shouldn't be using a table view controller, but a regular view controller with a UITableView and any other views you'd like.
来源：https://stackoverflow.com/questions/24085152/xcode-5-not-displaying-top-bottom-layout-guides-for-tableviewcontrollers