@peterfriese

Calling asynchronous Firebase APIs from Swift

Feb 2, 2022 · 9 min read · Most of Firebase’s APIs are asynchronous. This might be confusing at first: you’re making a call, for example to fetch some data from Firestore, but you don’t get a result back. Why does this happen, what does “asynchronous API” mean, and how do you ...

Networking with Combine and SwiftUI

Jan 17, 2022 · 11 min read · Not keeping the UI up to date across the different parts of an app can result in an infuriatingly bad user experience, and I am sure we all have at least one or two apps in mind that are notorious for this kind of behaviour. Writing apps that keep t...

Using async/await in SwiftUI

Feb 10, 2021 · 22 min read · A lot of the code we write has to deal with asynchronous behaviour. Fetching data from the disk, sending a request to a remote API, or downloading an image - all these operations take time, even on your super-fast, low-latency working-from-home netwo...

Firebase Authentication: Migrating User Data

Nov 9, 2020 · 16 min read · This article is part of a series of articles that explores building a real-world application using SwiftUI, Firebase, and a couple of other technologies. Here is an overview of the series and what we're building: In part 1 of the series, we focussed...

Firebase and the new SwiftUI 2 Application Life Cycle

Oct 19, 2020 · 6 min read · For the longest time, iOS developers have used UIApplicationDelegate to handle application startup and other lifecycle events in their apps. At WWDC 2020, Apple made some significant changes to how apps participate in the application lifecycle. In t...