在UitableView单元格中异步获取图像，这些单元格作为后台进程加载：s

I am building an iphone app, now this app has a tabviewcontroller and one of the tabs has a navigation view controller in it. Inside the navigation view controller I have 2 UIview controllers and in one I am loading a UITableView. The data for the cells is loaded up from a database and it takes some time, to avoid this I am doing a I am building an iphone app, now this app has a