GDSlideViewController. 每次滑动到当前页才进行网络请求、绘制等操作。在界面实现代理方法，gd_viewdidload ，在这个方法里实现UI绘制等操作，传的子view 可以使 view 可以使controller

Problem

The full read on this project is a sign-in away — what it solves, who it serves, and where it sits in the market.

Audience

The full read on this project is a sign-in away — what it solves, who it serves, and where it sits in the market.

Market

The full read on this project is a sign-in away — what it solves, who it serves, and where it sits in the market.

Pricing

The full read on this project is a sign-in away — what it solves, who it serves, and where it sits in the market.