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

Chapter 20: Getting Started with Cameras and Photo Libraries

In the previous chapter, you created the RatingsView class and added it to the Restaurant Detail and Review Form screens. You also enabled the user to submit a review using the Review Form screen, although the submitted review is only printed to the Debug area for now.

In this chapter, you will complete the implementation of the Photo Filter screen so you can get a photo from the camera or photo library, and apply a filter to it. You'll start by importing a .plist file containing the filters you want to use, then create a filter object class to store filter data, and create a data manager class to read the .plist file and populate an array of filter objects. Next, you'll create a protocol with a method to apply filters to images. After that, you'll create view controllers for the Photo Filter screen and the collection view in it, implement the UIImagePickerDelegate protocol, which allows you to get photos...