15. Sep 2020
Swift, iOS, ObjC and stuff
15. Sep 2020
13. Sep 2020
How to scroll a collection view with defined animation duration and animation curve.
8. Sep 2020
How to define colors in Xcode.
25. Aug 2020
In MVC your view code should not live within the view controller. Use a view subclass instead.
18. Aug 2020
How to build a punch out custom transition between view controllers.
11. Aug 2020
A developer menu can help to speed up development.
6. Jun 2020
At WWDC 2020 Apple added a list layout to UICollectionView. This post explains how to write a unit tests that asserts that the cell is populated correctly.
25. Apr 2020
Tabs in Xcode can be quite useful. Here is how I use them.
17. Apr 2020
Sometimes during the development of an iOS app, we need to figure out, how many pixels are between two views. macOS has accessibility featues build in that help with this task.
11. Apr 2020
Be careful when using CGAffineTransform with Auto Layout.
4. Apr 2020
Add a gpx file to your Xcode project to simulate timed location changes in the iOS simulator.
12. Feb 2020
How to build a timer that works on a background thread.
25. Jan 2020
Breakpoints can do many useful things. Here is how to use breakpoints to populate the app with demo data while debugging.
18. Jan 2020
How to add a breakpoint in Xcode that prints the currely visible view controller to the console.
25. Aug 2019
Did you know that you can use regular expressions in search and replace in Xcode?
9. Aug 2019
How to add support for dynamic type to regular UIButtos.
1. Aug 2019
10 years after it's first appearance in the App Store I finally submitted an update for my first app.
2. Apr 2019
It's quite easy to test if a view controller is presented on screen after some action. Here is how this works.
16. Mar 2019
Starting with unit tests is not hard. Here are some easy tests you can add to your project right now.
25. Dec 2018
UIStackViews are quite powerful. I wrote a Playground to play arround with it.
23. Sep 2018
SwiftConf was great as always. Here are my sketch notes.
17. Aug 2018
In this post you'll learn how to add a breakpoint in Xcode that adds a border to each subview in a view.
22. Jul 2018
Use snapshot tests to verify the correctness of your user interface.
18. May 2017
Sketch notes help be to stay focused during conference talks. Here are my sketch notes from UIKonf 2017.
20. Jun 2015
I don't like the Interface Builder and here is why.