Defining dynamic colors in Swift
Various techniques that let us define fully dynamic colors that adapt to the user’s selected color scheme, using either SwiftUI or UIKit.
Swift
Creating custom collections in Swift
When creating collections of objects or values in Swift, we usually use data structures provided by the standard library - such as Array, Dictionary and Set. While those three cover most use cases, sometimes creating a custom wrapper collection can enable us to make our code more predictable and less prone to errors.
Understanding and Extending Swift 4’s Codable
The Codable protocols (Decodable and Encodable) were introduced to the Swift standard library with Swift 4.
Swift Codable: Decoding / Encoding With Context
The Codable protocols are one of the coolest recent additions to Swift. Even though it works similarly to its community counterparts like Unbox, Codable has the advantage of being powered by the compiler. One of my favorite features in Unbox was to give a context to the decoding operation. Let's take a look at how we can achieve the same with Codable and how I use to power a type-erased Decodable type.
Converting closure-based code into async/await in Swift
Learn about checked continuations and converting closure and delegate-based code into async/await in Swift.
Redis and Vapor With Server-Side Swift: Getting Started
Learn how to use the in-memory data store, Redis, and Vapor to cache objects by saving them in JSON, then configuring them to expire after a set time.
Adding Core Data to a Swift Package
Last year, when Swift Package Manager added support for Xcode and iOS projects was announced, I was overjoyed. A short time later, I realized that package resources weren’t supported and many of my hope and dreams for using it were immediately dashed.
Repository pattern using Core Data and Swift
Core Data has great support for UIKit but often it is a good idea to create an abstraction layer between the business layer and the storage layer.
Displaying a Bottom Sheet in iOS 15 Using UISheetPresentationController
With the release of SwiftUI, some people have asked if UIKit is going to be dead. It’s far from dead. In iOS 15, Apple’s engineers continues to pour new features into UIKit. One of the highlights is UISheetPresentationController. This new class lets you easily create a expandable bottom sheet with just a few lines of code. If you have no ideas about what a bottom sheet is, open the built-in Maps app to take a look. It displays a bottom sheet for users to perform search and access their saved locations. The sheet is resizable. You can drag the bottom […]
5 Steps to Better SwiftUI Views
Learn to make your SwiftUI views smaller, simpler, and more reusable.
How to Implement MVVM with Combine in SwiftUI
In this article we are going to learn how to implement the powerful MVVM design pattern in SwiftUI applications that are leveraging the Combine framework. The combination of these 3 concepts will be the standard
Dependency Injection in SwiftUI
This post shows two ways of achieving dependency injection in SwiftUI: using @EnvironmentObject or a View Model Factory.
A Simple Implementation of Remote Configuration For SwiftUI
Implementing the Remote Configuration feature and integrating it with the latest Swift development environment; the pros and cons of adding dependencies.
Introducing SwiftUI TabView and Working with Tab Bar Customization
The tab bar interface appears in some of the most popular mobile apps such as Facebook, Instagram, and Twitter. A tab bar appears at the bottom of an app screen and let users quickly switch between different functions of an app. In UIKit, you use the UITabBarController to create the tab bar interface. For the SwiftUI framework, it provides a UI component called TabView for developers to display tabs in the apps. In this tutorial, we will show you how to create a tab bar interface using TabView, handle the tab selection, and customize the appearance of the tab bar. […]
Understanding Data Flow in SwiftUI
In this tutorial, you’ll learn how data flow in SwiftUI helps maintain a single source of truth for the data in your app.