iOS 10 Programming Fundamentals with Swift by Matt Neuburg

Author:Matt Neuburg
Language: eng
Format: epub, pdf
Publisher: O'Reilly Media
Published: 2016-10-10T04:00:00+00:00

PkgInfo

A tiny text file reading APPL????, signifying the type and creator codes for this app. The PkgInfo file is something of a dinosaur; it isn’t really necessary for the functioning of an iOS app and is generated automatically. You’ll never need to touch it.

In real life, an app bundle may contain more files, but the difference will be mostly one of degree, not kind. For example, our project might have additional .storyboard or .xib files, additional frameworks, or additional resources such as sound files. All of these would make their way into the app bundle. In addition, an app bundle built to run on a device will contain some security-related files.

You are now in a position to appreciate, in a general sense, how the components of a project are treated and assembled into an app, and what responsibilities accrue to you, the programmer, in order to ensure that the app is built correctly. The rest of this section outlines what goes into the building of an app from a project, as well as how the constituents of that app are used at launch time to get the app up and running.

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