Published inDev Genius·Oct 17Writing good unit testsWe write tests to prove that our code is correct now and in the future. If we want to do some refactoring some day then we can rely on “good” unit tests continuing to pass to give us confidence we’ve not caused issues. If the tests aren’t “good” then they…Unit Testing8 min readUnit Testing8 min read
Apr 30Using ProvisioningProfile and Firebase to monitor profile expiries remotelyPreviously I wrote about my Swift Package ProvisioningProfile, which extracts when your (iOS/watchOS/tvOS/macOS) app’s provisioning profile is going to expire. If you’ve got a load of your own apps on your device(s) (or other people’s devices) but they’re not on the App Store or TestFlight then you‘ll have experienced the…IOS6 min readIOS6 min read
Published inDev Genius·Feb 16, 2022Moving views around in SwiftUIIn the earlier days of SwiftUI I was putting together a card game (for funsies) and had most of it working quite nicely but couldn’t figure out how to animate the cards from the deck to a player’s hand. iOS 14 was in beta at this point and I found…IOS7 min readIOS7 min read
Dec 11, 2021Goodbye MFMailComposeViewController?For many years I’ve used MFMailComposeViewController in my iOS apps to help the user send feedback emails to me. It’s a nice way of keeping the user in my app and just popping up an email composition sheet to let them say whatever they want to say quickly and easily. …IOS2 min readIOS2 min read
Aug 12, 2021Easy UIAlertController presentationSomething that can often be troublesome in iOS (or tvOS) development is presenting alerts at random times while other things might be happening in your UI. In iOS 8, Apple deprecated UIAlertView, which didn’t require a specific UIViewController to be presented from, as is required in the UIAlertController that replaced…Swift2 min readSwift2 min read
Jun 24, 2021Xcode: Monitoring your public API — Part 2In Part 1 we looked at how we could generate the public API of our Objective-C/Swift frameworks in the Swift language. But what if we want to see how our public API looks in ObjC? Most people have moved on from ObjC so it may not be such a big…IOS3 min readIOS3 min read
Jun 9, 2021Xcode: Monitoring your public API — Part 1If you’ve ever worked on an SDK/framework/library you’ll hopefully have done your best to keep a stable public API for the developers who use it. …IOS5 min readIOS5 min read
Dec 20, 2020Knowing when your iOS app’s provisioning profile is going to expireAs iOS devs I’m sure we’ve all come across the problem of the development version of our app suddenly failing to launch for our testers. For an app that’s actively in development it may not be a hugely common issue as your latest build will always have your latest certificate…IOS3 min readIOS3 min read
Jun 25, 2020AVPlayer & SwiftUI Part 5: VideoPlayer is here!Note: video playback on the simulator seems to not show the video, just play the audio, so use a real device if necessary! This blog is related to the SwiftUI video player that’s been progressing over part 1, part 2, part 3 and part 4. But don’t worry! You don’t…Swift2 min readSwift2 min read
Mar 10, 2020AVPlayer & SwiftUI Part 4: Better Player ObservingUpdate: Check out part 5 for SwiftUI’s own VideoPlayer view in iOS 14! Note: video playback on the simulator seems to not show the video, just play the audio, so use a real device if necessary! This blog is related to the SwiftUI video player that’s been progressing over part…Swiftui3 min readSwiftui3 min read
