以下翻译是本人通过谷歌工具进行翻译,并进行修正后的结果,希望能对大家有所帮助.如果您发现翻译的不正确不合适的地方,希望您能够发表评论指正,谢谢.转载请注明出处. Concurrency and Application Design 并发和程序设计 In the early days of computing, the maximum amount of work per unit of time that a computer could perform was determined by th…

View and Window Architecture 视图和窗口架构 Views and windows present your application’s user interface and handle the interactions with that interface. UIKit and other system frameworks provide a number of views that you can use as-is with little or no mod…

Custom Layouts: A Worked Example Creating a custom collection view layout is simple with straightforward requirements, but the implementation details of the process may vary. Your layout must produce layout attributes objects for every view your coll…

Resource Management in View Controllers View controllers are an essential part of managing your app’s resources. View controllers allow you to break your app up into multiple parts and instantiate only the parts that are needed. But more than that, a…

View Controller Basics Apps running on iOS–based devices have a limited amount of screen space for displaying content and therefore must be creative in how they present information to the user. Apps that have lots of information to display must there…

About View Controllers View controllers are a vital link between an app’s data and its visual appearance. Whenever an iOS app displays a user interface, the displayed content is managed by a view controller or a group of view controllers coordinating…

Navigating a Data Hierarchy with Table Views 导航数据表视图层次 A common use of table views—and one to which they’re ideally suited—is to navigate hierarchies of data. A table view at a top level of the hierarchy lists categories of data at the most general l…

About Table Views in iOS Apps Table views are versatile user interface objects frequently found in iOS apps. A table view presents data in a scrollable list of multiple rows that may be divided into sections. 表格视图是通用用户界面对象,常常能在iOS应用程序里看到. 表格视图在一个多行的一…

  Animations Animations provide fluid visual transitions between different states of your user interface. In iOS, animations are used extensively to reposition views, change their size, remove them from view hierarchies, and hide them. You might use…

  Designing Your Data Source and Delegate 设计你的数据源和委托 Every collection view must have a data source object providing it with content to display. The data source object is an object that your app provides. It could be an object from your app’s data mod…