摘要： NextAbout iOS Collection Views关于iOS Collection ViewsA collection view is a way to present an ordered set of data items using a flexible and changeable layout. The most common use for collection views is to present items in a grid-like arrangement, but collection views in iOS are capable of more than 阅读全文

摘要： WindowsEvery iOS application needs at least one window—an instance of theUIWindowclass—and some may include more than one window. A window object has several responsibilities:每个iOS应用程序需要至少一个窗口---UIWindow类的一个实例---有些可能有不止一个窗口。窗口对象的任务是：It contains your application’s visible content.它包含了应用程序的可见内容。It pla 阅读全文