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, so let’s start building it. 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 the folder icon in the Navigator area (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 ...

Get iOS 10 SDK Development, 1st Edition now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.