Book Image

SwiftUI Cookbook

By : Giordano Scalzo, Edgar Nzokwe
Book Image

SwiftUI Cookbook

By: Giordano Scalzo, Edgar Nzokwe

Overview of this book

SwiftUI is an innovative and simple way to build beautiful user interfaces (UIs) for all Apple platforms, right from iOS and macOS through to watchOS and tvOS, using the Swift programming language. In this recipe-based book, you’ll work with SwiftUI and explore a range of essential techniques and concepts that will help you through the development process. The recipes cover the foundations of SwiftUI as well as the new SwiftUI 2.0 features introduced in iOS 14. Other recipes will help you to make some of the new SwiftUI 2.0 components backward-compatible with iOS 13, such as the Map View or the Sign in with Apple View. The cookbook begins by explaining how to use basic SwiftUI components. Then, you’ll learn the core concepts of UI development such as Views, Controls, Lists, and ScrollViews using practical implementation in Swift. By learning drawings, built-in shapes, and adding animations and transitions, you’ll discover how to add useful features to the SwiftUI. When you’re ready, you’ll understand how to integrate SwiftUI with exciting new components in the Apple development ecosystem, such as Combine for managing events and Core Data for managing app data. Finally, you’ll write iOS, macOS, and watchOS apps while sharing the same SwiftUI codebase. By the end of this SwiftUI book, you'll have discovered a range of simple, direct solutions to common problems found in building SwiftUI apps.
Table of Contents (15 chapters)

How to implement a swipeable stack of cards in SwiftUI

Every now and then, an app solves a common problem in such an elegant and peculiar way that it becomes a sort of de facto way to do it in other apps as well.

I am referring to a pattern such as pull to refresh, which started in the Twitter app and then became part of iOS itself.

A few years ago, Tinder introduced the pattern of swipeable cards to solve the problem of indicating in a list of cards which cards we like and which we dislike.

From then on, countless apps have applied the same visual pattern, not just in the dating sector but in every sector that needed a way to make a match between different users, including anything from business purposes, such as coupling mentors and mentees, to indicating which clothes we like for a fashion e-commerce app.

In this recipe, we are going to implement a barebones version of Tinder's swipeable stack of cards.

Getting ready

This recipe doesn't need any external...