iOS dev bit: iphone screen fit

Recently started to do iOS development, encountered some minor problems and workarounds, recorded.

Today is the iphone screen adapter

IPhone5 out after the iphone on the screen has 2 sizes: 3.5-inch and 4-inch, Xcode 5 of the IB designer interface is 4-inch, put the button to the bottom, the simulator selected as 3.5-inch button can not see, found the solution:

Http://stackoverflow.com/questions/18248789/xcode-autosizing-preview-window-missing

Note that the text content is said to be uncheck "Use AutoLayout", do not look on the picture is on the hook.