Book Image

iOS 16 Programming for Beginners - Seventh Edition

By : Ahmad Sahar, Craig Clayton
Book Image

iOS 16 Programming for Beginners - Seventh Edition

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, which means that competent iOS developers are in high demand. iOS 16 Programming for Beginners, Seventh Edition, is a comprehensive introduction for those who are new to iOS, covering the entire process of learning the Swift language, writing your own app, and publishing it on the App Store. This book follows a hands-on approach. With step-by-step tutorials to real-life examples and easy-to-understand explanations of complicated topics, each chapter will help you learn and practice the Swift language to build your apps and introduce exciting new technologies to incorporate into your apps. You'll learn how to publish iOS apps and work with new iOS 16 features such as Mac Catalyst, SwiftUI, Lock Screen widgets, WeatherKit, 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 (34 chapters)
1
Part I: Swift
11
Part II: Design
16
Part III: Code
26
Part IV: Features
32
Other Books You May Enjoy
33
Index

Adding a widget target to your app

To add a widget to the LetsEat project, you’ll use the Widget Extension template. This template contains all the code necessary to display a widget on the home screen, set up the initial view for that widget, and launch the app when the widget is tapped. Follow these steps:

  1. Choose File | New | Target to open the template selector.
  2. iOS should already be selected. In the Application Extension section, click Widget Extension and click Next:

Figure 25.1: Template Chooser window

  1. Name the extension LetsEatWidget and make sure the Include Configuration Intent check box is unticked. This is because this widget will not be user configurable. Click Finish.
  2. Click Activate in the dialog box that appears. This will create a scheme for your widget that you can use to run it in the iOS simulator:

Figure 25.2: Activate Scheme dialog box

  1. Verify that LetsEatWidgetExtension scheme and...