苹果开发商"http:// developer.apple.com/library/ios/#festated articles/View unloadingand Unloading/View Loadingand Unloading.html#/apple_ref/doc/uid/TP400007457-CH10-SW37" rel="nofollow" > reference 。它们的意思是“这样做会引发默认的浏览装入行为?
When overriding the loadView method to create your views programmatically, you should not call super. Doing so initiates the default view-loading behavior and usually just wastes CPU cycles. Your own implementation of the loadView method should do all the work that is needed to create a root view and subviews for your view controller. For more information on the view loading process, see “Understanding How Views Are Loaded and Unloaded.”