Articles about iOS development in Swift or Objective-C
One of the new features of Xcode 11 is the ability to see a live preview of a SwiftUI view in what is called the Canvas. This is really convenient while working with a UI as you can modify the code and have an immediate feedback about the result.Wouldn’t it be cool to have a
One of the things I like about iOS development is that the latest version of the operating system has usually a very good adoption rate, but iOS 13 doesn’t support a pretty popular model like iPhone 6 and sometimes your customers need to use older devices, I still have to support iOS 9 so devices
Sometimes you need to share code between iOS and Android, or you have business logic for a customer already written in JavaScript because it is used on the web.If you need to run JavaScript code on your app loading a page into a WkWebView is one of your options and you can read my previous
As you probably know UIWebView has been deprecated in iOS 13, I’ve use it in my projects for years and it was really convenient to display HTML pages inside an app but even to interact with Javascript, for example to perform operations on JSON files sharing the same login with Android and even with the
Back in July I wrote a post about Navigation in SwiftUI trying to explain the difference between NavigationLink and DynamicNavigationDestinationLink. The latter has been deprecated, so the article is now useless, you can still find it here http://www.gfrigerio.com/navigation-in-swiftui-deprecated/I updated the repository on GitHub to remove the deprecated code and provide a few examples of various
Almost every iOS app needs to display images, you can have them in your app’s bundle or you load them from an external URL, and that’s what this article is all about.As usual you can find the source code on GitHub at this link Building the UI In the example I’m presenting a list of
WWDC 2019 was really packed with new stuff for iOS and the new data sources for TableViews and CollectionViews didn’t get the same attention as SwiftUI but are a really nice addition for people still working with UIKit. I’m going to focus my post on UITableViewDiffableDataSource but there is a similar API for CollectionViews and
If you are a registered developer Apple sent you an email reminding you to update your app to implement Dark Mode. There is a WWDC session dedicated to that, this post is a quick introduction to the topic with an example on how to implement a theme manager in your app. I think it is
One of the topics I wanted to explore about SwiftUI was how to integrate CoreData in it, and I want to describe two approaches you can follow: a direct one using property wrappers and another one by having a class hide the existence of Core Data to the user.I usually prefer the latter, as it
If you came across this blog post and you’re happy because you didn’t think it was possible to use NSAttributedString in SwiftUI I have a bad news: it isn’t supported yet. Text in SwiftUI accept a String and there isn’t the equivalent of attributedText you can find in UILabel. So what is this article about?
Progress bars and activity indicators is something we tend to use a lot in iOS applications and it is nice to customise them instead of using all the time the standard UIActivityIndicatorView.I think SwiftUI makes it really easy to build this kind of views and I implemented 4 of them in my sample GitHub project
UPDATE: DynamicNavigationDestinationLink has been deprecated so most of this article is useless. I wrote a new one and updated the GitHub repository In this post I want to explain the difference between NavigationLink and DynamicNavigationDestinationLink in SwiftUI with a quick example and point out the differences between them.You can find the sample code on GitHub
SwiftUI was one of my favourite announcements during WWDC 2019 alongside Combine. At the time I’m writing this post, mid July, beta 4 has just been released and although it isn’t yet stable I think SwiftUI is starting to get interesting. I think it will be hard to drop iOS 12 support soon, but SwiftUI
I want to share my experience building and distributing apps with xcodebuild hoping to help some iOS developer struggling with automating build and distribution via command line. There are two ways to distribute a test version of your app for iOS: TestFlight and Ad Hoc.The former allows you to submit a build to App Store
Here’s a quick guide to implement Push notifications on iOS. Every now and then I need to implement push notification and I always forget how to create the certificate and convert it to use with python, so this guide will be helpful to the future myself and hopefully to some fellow developers 😉Actually, creating the