If you're working on an app that requires access to a user's location, even when your user has sent your app to the background, you might have noticed that when you ask the user for the appropriate permission, iOS 13 shows a different permissions dialog than you might expect. In iOS 12 and below, when you ask for so-called always permissions, the user can choose to allow this, allow location access only in the foreground or they can decide to now allow location access at all. In iOS 13, the user can choose to allow access once, while in use...

If you use Core Data in your apps, you might be aware that the larger and more complicated your set up becomes, the harder it is to debug. It's at this point where you might start to get frustrated with Core Data and its black-box kind of implementation. You might think that you simply have to trust that Core Data will do the ideal thing for your app. Furthermore, you might have a set up with multiple managed object contexts, each confined to its own thread. And when your app crashes sometimes, you think it's related to Core Data in...

December has always been a month of sharing for me. Sharing food and experiences with family, celebrating the end of what has (hopefully) been a wonderful year, reflecting and setting goals for the new year. And this year, I have decided to share something really special with the iOS community. In December I will publish a new blog post every day until Christmas eve. That's 24 blog posts in total. And since I want this whole endeavor to be about the community itself, I need your input. Send me messages on Twitter to let me know what you want to...