Book Image

iOS 14 Programming for Beginners - Fifth Edition

By : Ahmad Sahar
Book Image

iOS 14 Programming for Beginners - Fifth Edition

By: Ahmad Sahar

Overview of this book

If you're looking to work and experiment with powerful iOS 14 features such as widgets and App Clips to create your own apps, this iOS programming guide is for you. The book offers a comprehensive introduction for experienced programmers who are new to iOS, taking you through the entire process of learning the Swift language, writing your own apps, and publishing them on the App Store. Fully updated to cover the new iOS 14 features, along with Xcode 12 and Swift 5.3, this fifth edition of iOS 14 Programming for Beginners starts with an introduction to the Swift programming language and shows you how to accomplish common programming tasks with it. You'll then start building the user interface (UI) of a complete real-world app using the storyboards feature in the latest version of Xcode and implement the code for views, view controllers, data managers, and other aspects of mobile apps. The book will also help you apply iOS 14 features to existing apps and introduce you to SwiftUI, a new way to build apps for all Apple devices. Finally, you’ll set up testers for your app and understand what you need to do to publish your app on the App Store. By the end of this book, you'll not only be well versed in writing and publishing applications, but you’ll also be able to apply your iOS development skills to enhance existing apps.
Table of Contents (31 chapters)
1
Section 1: Swift
10
Section 2:Design
15
Section 3:Code
24
Section 4:Features

Fixing user interface issues

One of the things that you will find is that an iOS app is never really done. You'll always find ways to improve and refine your app. Build and run your app, and compare it with the design shown in the app tour. You will notice upon closer inspection that your app's screens have minor differences when compared to the screens shown in the app tour, and require changes. Let's start with the Explore screen for your app:

Figure 22.1 – iOS simulator showing the Explore screen

The changes required for the Explore screen are as follows. Refer to the numbers in the preceding figure to see the parts that need to be changed:

  • The gray navigation bar (1) is not present on the app tour and will have to be removed.
  • The collection view cells (2) have sharp edges. You'll implement rounded corners for the cells to match the cells shown in the app tour.
  • The tab bar is gray and the tab bar buttons are blue...