摘要： Mac App StoreThe information you’ve read so far focused on how to create an app in Xcode. However, there are other things you must do to publish an app on the Mac App Store.到目前为止你学习的都是关于如何在Xcode里创建一个应用程序。然而，还有一些其它的事情你必须完成才能把一个应用程序发布到Mac 应用商店。After you test and refine your code, you need to turn your 阅读全文

摘要： Collection View BasicsCollection View 基础To present its content onscreen, a collection view cooperates with many different objects. Some objects are custom and must be provided by your app. For example, your app must provide a data source object that tells the collection view how many items there are 阅读全文

摘要： ViewsBecause view objects are the main way your application interacts with the user, they have many responsibilities. Here are just a few:因为视图对象是应用程序跟用户交互的主要方式，所以它们有很多责任。以下是其中一小部分：Layout and subview management布局和子视图管理A view defines its own default resizing behaviors in relation to its parent view.一个 阅读全文