1.#pragma mark - life cycle
viewDidLoad
viewWillAppear
2.#pragma mark - delegate
#pragma mark collectionViewDelegate
#pragma mark tableviewDelegate
.......
3.#pragma mark - Event Response
4.#pragma mark - Private methods
5.#pragma mark - Getter and setter
原文：http://www.cnblogs.com/yyj900165/p/4952412.html