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iOS 15 Programming for Beginners

iOS 15 Programming for Beginners

By : Ahmad Sahar, Craig Clayton
4.7 (10)
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iOS 15 Programming for Beginners

iOS 15 Programming for Beginners

4.7 (10)
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)
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1
Part 1: Swift
10
Part 2: Design
15
Part 3: Code
25
Part 4: Features

Creating classes for the Photo Filter screen

So far, you have imported FilterData.plist into your app, created the FilterItem and FilterDataManager classes, and created the ImageFiltering protocol. In this section, you'll set up the classes for the Photo Filter screen, which allows you to manage this screen and the collection view inside it.

Remember that you added the PhotoFilter storyboard file to your project in Chapter 16, Getting Started with MapKit. It contains a scene that consists of a large image view that will hold the user-selected photo and a collection view that will display filter previews. The following screenshot shows what this will look like when you have completed the implementation:

Figure 20.2: iOS Simulator showing the completed Photo Filter screen

This screen works as follows. When you tap on the Add Photo button in the Restaurant Detail screen and select a photo, the Photo Filter screen will appear, showing the selected photo...

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