Building Our User Interface
That white box in the Simulator is our app. It’s not much, but then again, we haven’t done anything yet. Let’s start building our app for real. Press Stop in Xcode to stop the simulated app, and then take a look at the project in Xcode.
If the File Navigator isn’t already showing on the left side of the project window, bring it up with ⌘1. The File Navigator uses a tree-style hierarchy with a blue Xcode document at the top, representing the project itself as the root. Under this are files and folders. The folder icons are groups that collect related files, such as the views and logic classes for one part of the app; groups don’t usually represent actual directories on the filesystem. We can expand all the groups ...
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