Q42 Engineering - iOS

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iOS

We regularly write handy how to's for iOS developers as well as articles on programming challenges that we have encountered in our app projects. Do you also love figuring out features like Apple's location permissions, the new Combine framework or the use of Server Driven UI for iOS apps? Then do check out our job vacancies (in Dutch) at werkenbij.q42.nl.

A man and woman with mobile phones in their hands pointing at a floating tompouce cake.

Transitioning to SwiftUI with Server Driven UI in the HEMA app

How SwiftUI became the catalyst for efficiency and developer happiness

Illustration of a woman with a mobile phone in her hand, that sends a flying letter to a mailbox.

Faster feature implementation with Server Driven UI

Why this new architecture is so successful in further developing the iOS app for Dutch postal company PostNL

Blind person with mobile phone that plays music notes that correspond a graph in front of him.

Using SwiftUI in a production app

The three main challenges we encountered while building an iOS app that makes math graphs audible to blind students

Illustration of a researcher (right) trying to put the words of a patient (left) into a statistical graph.

Supercharged app development using SwiftUI

How we used SwiftUI to build an app for behavioral research

Creating an App Clip for Hue lights

Creating an App Clip for Hue lights

Our learnings from building a small stand-alone iOS app for guests to control your smart lighting system

Why “Always use UTC” is bad advice

Why “Always use UTC” is bad advice

How to choose the correct representation for storing Dates and Times.

Discovering Server Driven UI

Discovering Server Driven UI

Our story about how Server Driven UI has contributed to the success of classical music streaming service Primephonic.

Getting started with multi-window on iPadOS

Getting started with multi-window on iPadOS

A short step-by-step guide on how to convert an existing single window iPad app into a multi-window app.

Optionals in SwiftUI

Optionals in SwiftUI

How to use optional values in Apple's new SwiftUI framework.

Supporting “Sign in with Apple” in your UIKit app

Supporting “Sign in with Apple” in your UIKit app

How to implement iOS 13's new privacy sign-in tool to quickly onboard new users.

Apple's new Combine framework

Apple's new Combine framework

Apple's take on Reactive Programming: check this first introduction if you want to know more about this fundamental building block.

Adapting to the new 'allow just once' location permission in iOS 13

Adapting to the new 'allow just once' location permission in iOS 13

At the WWDC19 keynote Apple announced two changes in the way location permissions will work in iOS 13. Avoid losing users over these permission optimizations by understanding these changes.