Book Image

An iOS Developer's Guide to SwiftUI

By : Michele Fadda
Book Image

An iOS Developer's Guide to SwiftUI

By: Michele Fadda

Overview of this book

– SwiftUI transforms Apple Platform app development with intuitive Swift code for seamless UI design. – Explore SwiftUI's declarative programming: define what the app should look like and do, while the OS handles the heavy lifting. – Hands-on approach covers SwiftUI fundamentals and often-omitted parts in introductory guides. – Progress from creating views and modifiers to intricate, responsive UIs and advanced techniques for complex apps. – Focus on new features in asynchronous programming and architecture patterns for efficient, modern app design. – Learn UIKit and SwiftUI integration, plus how to run tests for SwiftUI applications. – Gain confidence to harness SwiftUI's full potential for building professional-grade apps across Apple devices.
Table of Contents (25 chapters)
Free Chapter
1
Part 1: Simple Views
5
Part 2: Scrollable Views
8
Part 3: SwiftUI Navigation
11
Part 4: Graphics and Animation
14
Part 5: App Architecture
17
Part 6: Beyond Basics

Creating custom tab bars

Sometimes, you must implement your take on a tab bar because what you want cannot be created with the standard one; for example, you want something that resembles a tab bar but has custom graphical requirements and is in a different position on the screen. In this section, you will also learn that going for a custom approach requires much more work than the “standard Apple way” of doing things, besides having other drawbacks.

For our customized tab bar, we want it to have round corners, to be drawn in a frame, with a shadow, and to show the title in a different bright color, say in red and in bold, when a tab is selected. We also want it to sit at the top of the user screen rather than at the bottom.

To begin, it is essential to establish the necessary information for presenting a tab, which includes an image representing the non-selected state, an image representing the selected state, and a title. For the sake of simplicity, we will limit...