nib文件的默认搜索规则

　　if you do not specify a nib name, and do not override the

loadView

method in your custom subclass, the view controller searches for a nib file using other means. Specifically, it looks for a nib file with an appropriate name (without the

.nib

extension)

If the view controller class name ends with the word ‘Controller’, as in

MyViewController

, it looks for a nib file whose name matches the class name without the word ‘€œController’, as in

MyView.nib

.

It looks for a nib file whose name matches the name of the view controller class. For example, if the class name is

MyViewController

, it looks for a

MyViewController.nib

file.