Migrating a code base from one framework to another can be a time expensive, risky, time consuming task. Particularly, when it involves touching multiple key areas of the app or is highly integrated in the codebase such an asynchronous framework such as Combine, PromiseKit, or RxSwift. Note this article applies…

Introduction We are going to explore a way you can construct datasource’s for your view using result builds in a very simple manor. This leads to a very testable design, that requires minimal code. Let’s get started. In this example we are going to use a UICollectionView that uses a NSDiffableDataSourceSnapshot…

How seasmless is it for Flutter to talk to Native iOS and Android code? Intro This blog investigates how Flutter communicates with native code and explores the complexities, challenges, and risks involved. …

Using NSLayoutConstraint subclasses — With a scrollable view — whether that’s a UITableView, UIScrollView, or even a UIView — when the keyboard appears, it takes up space and typically means you have to adjust your view to be dynamically responsive depending on the keyboard’s visibility. The most common way of handling this is using…

The interactive pop gesture is a core interaction that makes navigating back to the previous screen so much easier. And the bigger the device gets, the more value it delivers. Apple claims this is the default behaviour that comes out of the box, which is true for a standard app…

Evaluating statements, finding memory addresses, and more — In case you aren’t already familiar, LLDB is the debugger tool used in LLVM. If you have ever done iOS or Mac development, you will know it as the debugging tool in the console. When I first started iOS development, my tech lead demonstrated how to po an object. In…

You may have seen this warning on a recent submission of your app to iTunes Connect and have wondered what it meant. ITMS-90809: Deprecated API Usage — Apple will stop accepting submissions of apps that use UIWebView APIs . See https://developer.apple.com/documentation/uikit/uiwebview for more information. What it’s saying is that your…

Index out of range, no more — How many times have you had to deal with the hassles of manually tracking IndexPaths for a UITableView? Or, how many times have you had to debug this before? Invalid update: invalid number of rows in section... What if there was a way to take the hassle out of managing…

The foundation for displaying text onscreen for iOS applications — Localizable strings are the foundation for displaying text onscreen for iOS applications. These are typically stored in .strings files that are switched out depending on the user’s locale. Let’s take a look at how you would typically go about it. You would have a .strings file for each language you…