IOS UITableView Pictures Lazy Loading Demo

1, https://developer.apple.com/library/ios/samplecode/LazyTableImages/Introduction/Intro.html

This is Apple's official demo, using the itunes app list as an example to tell the idea of lazy load on the picture.

The main idea is that when UITableView is in a stopped state, it finds the cell in the current view and starts downloading the icon, which is loaded onto the page when the download is complete.

2, can directly use the third party to load the network picture library, Sdwebimage,https://github.com/rs/sdwebimage