Book Image

iOS 15 Programming for Beginners - Sixth Edition

By : Ahmad Sahar, Craig Clayton
5 (1)
Book Image

iOS 15 Programming for Beginners - Sixth Edition

5 (1)
By: Ahmad Sahar, Craig Clayton

Overview of this book

With almost 2 million apps on the App Store, iOS mobile apps continue to be incredibly popular. Anyone can reach millions of customers around the world by publishing their apps on the App Store. iOS 15 Programming for Beginners is a comprehensive introduction for those who are new to iOS. It covers the entire process of learning the Swift language, writing your own app, and publishing it on the App Store. Complete with hands-on tutorials, projects, and self-assessment questions, this easy-to-follow guide will help you get well-versed with the Swift language to build your apps and introduce exciting new technologies that you can incorporate into your apps. You'll learn how to publish iOS apps and work with Mac Catalyst, SharePlay, SwiftUI, Swift concurrency, and much more. By the end of this iOS development book, you'll have the knowledge and skills to write and publish interesting apps, and more importantly, to use the online resources available to enhance your app development journey.
Table of Contents (32 chapters)
1
Part 1: Swift
10
Part 2: Design
15
Part 3: Code
25
Part 4: Features

Getting permission to use the camera or photo library

As mentioned earlier, Apple stipulates that your app must inform the user if it wishes to access the camera or photo library. If you don't do this, your app will be rejected and will not be allowed on the App Store.

You'll modify the Info.plist file in your project to make your app display messages when it tries to access the camera or photo library. Follow these steps:

  1. Click the Info.plist file in the Project navigator to display a list of keys. Move your mouse pointer over any existing key and click the + button:

Figure 20.12: Editor area showing contents of Info.plist

  1. A field should appear, allowing you to enter an additional key:

Figure 20.13: Editor area showing field used to enter keys

  1. Enter the following keys:
    NSPhotoLibraryUsageDescription
    NSCameraUsageDescription
  2. For each key's value, enter a string that explains to the user...