Know how to safely run concurrent Swift code — When the first time I saw the WWDC presentation about actors, I was thrilled with what it is capable of and how it will change the way we write asynchronous code in the near future. …

Define your own layouts — Whenever I use a storyboard or XIB file to create a custom UICollectionViewor UITableView cell layout, I always wonder, wouldn’t it be great if I could use SwiftUI to define the layout? In this year’s WWDC (2022), Apple finally made that happen. In this article, we will explore what it…

No more using UIViewControllerRepresentable and PHPickerViewController — In this year’s WWDC, Apple brings in tons of improvements to SwiftUI, one particular that catches my attention is the PhotosPicker view. Yes, you are right! SwiftUI is finally getting its own native photo picker view in iOS 16. The PhotosPicker view supports all the common functionalities that PHPickerViewController has…

It’s never been easier! — Dynamic dispatch is one of the most important mechanisms in Object-Oriented Programming (OOP). It is the core mechanism that makes run-time polymorphism possible, enabling developers to write code that decides their execution path during run-time rather than compile-time. As easy as it seems to achieve dynamic dispatch in OOP, it…

No more confusion! — The some and any keywords are not new in Swift. The some keyword was introduced in Swift 5.1 whereas the any keyword was introduced in Swift 5.6. In Swift 5.7, Apple makes another great improvement on both of these keywords. …

Writing an image to the camera roll is fairly simple in iOS development, but when it comes to detecting when the image has been written to the camera roll, it is not as simple as we think. Surprisingly, Apple does not give us any closure-based APIs that we can leverage…

Gives your users a seamless transition experience between web views and native views — When working on a hybrid mobile app, it is extremely important to ensure that our users have a seamless transition experience between web views and native views. One very common technique we can use to provide this kind of experience is by hijacking the WKWebView navigation actions. In this article…

A lesser-known yet super powerful feature of WKWebView — Using a web view to display some frequently updated content such as FAQ is a very common tactic used by most iOS developers. By doing so, developers can easily update the web view content without going through the App Store review process. …

Error handling in task groups — If you have read my previous article, you should know by now how to create a task group, add child tasks to a task group, and gather results from all the child tasks. …