Previously, building the user interface for iOS was very simply because there was only one iPhone size. The time has passed, now we have an array of iPhone sizes with the different screen sizes …

If you are like me and have a year or less of experience developing iOS apps, there might be some concepts that you use in code without realizing what they are or why you’ve used them—I’m talking about design patterns. These patterns allow our app’s codebase…

This week I want to start a series of posts about building interactive view components that Apple heavily uses in its apps but doesn’t include them into the SDK. Let’s begin with the bottom sheet. I think everybody used Apple Maps, Shortcut or Apple Music…

Combine asynchronous operations with generics and write chained asynchronous tasks while keeping code separated and easy to test.

Deeplink functionality is something a lot of apps need but it’s not always easy to get started with adding deeplinks for your app. This article should help you get started.

I recently released an app written 100% in SwiftUI and in doing so, uncovered some patterns that are difficult to express. In this post, I…

Recently, I've been learning more about Metal - I'm still working through the basics, but I've written a couple of posts and tweets about it, and I'm about halfway through Metal By Example. Up until now I've mostly been coding sample projects, but I recently…

Explorations in building a Mac app in Swift.

In part 1 of this series, I created a Mac app using SwiftUI. The app uses a Master-Detail design to list entries in an outline on the left and show details about the selected entry in the detail view on the right.
Now it is time to explore some more of the…

In part 1 of this series, I created a Mac app using SwiftUI. The app uses a Master-Detail design to list entries in an outline on the left and show details about the selected entry in the detail view on the right. In part 2 I explored using menus, adding…

This week, let’s take a look at how we can improve the internal consistency within each of our core data models, and how doing so can let us establish a much stronger foundation for our codebase as a whole.

Learn how to use opaque return types and the some keyword in Swift 5. Understand the difference between opaque return types, generics and protocols.

Learn how to unit test UIViewController and UIView in Swift 5 with Xcode and XCTest. We'll cover: benefits of unit testing view controllers; what we should be unit testing; how to design a view controller for testability; and sharpen our knowledge by writing…

Last week we started a series of posts about developing interactive components using SwiftUI, where we talked about building the bottom sheet. We need to understand the power of @ViewBuilder before moving to the next post about building another interactive…

This article is for implementation on the iOS side , if you are looking for the backend implementation part, check out this book!In WWDC 2019, Apple has announced a new privacy-focused mechanism for user to sign in on third party app, named "Sign in with…

Learn how and when you should split your app up into multiple specialized, reusable modules.

Fixing crashes and bugs takes time. Speed up this process by being better prepared with tips on diagnostics reports, feedback and useful insights.