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Debugging NSView layouts
I’ve been trying to tame the AutoLayout beast recently, and wanted to be able to see where my various views where ending up. I started to write a NSView subclass that dumped out a printable grid in the...
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Debugging your Xcode plugin
Today I discovered how to use Xcode to debug itself, and therefore also, my plugins! In some of my other articles I talked about how to build and deploy your Xcode plugin by pressing ⌘-B, restarting...
View ArticleBinding NSMutableArray to NSArrayController
This post describes how to use KVC to bind the contents of a mutable array into an NSArrayController so that adding and removing elements from the underlying array will trigger corresponding behaviour...
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The effect of DPI on images in Xcode’s asset catalogs
I was adding some images to the asset catalog in Xcode today, and noticed that it was behaving really weirdly in that some images would render at the correct size, and others would be blown-up and look...
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Difference between the various Apple certificate names
Perhaps it is just me, but I can never remember the differences between the various names that Apple uses for its development/distribution certifications – particularly the Mac ones. It also doesn’t...
View ArticleManipulating dates, times and timezones in Swift
I’ve recently created a small Swift library that helps manipulate dates and times in Swift. The ideas behind DateTimeKit are quite heavily influenced by the JodaTime library. DateTimeKit removes the...
View ArticleiTunesConnect – Invalid Binary
So, I went to submit an update to my app today and it successfully archives OK in Xcode, validates and uploads to iTunesConnect. However, when I log into iTunesConnect to submit for review, my binary...
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ServeUp App – Mocking responses for mobile apps
Almost every mobile app developer has to fetch (or update) data from a remote server via remote APIs. The mobile app under development is tightly coupled to a) the existence of these remote APIs, b)...
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Animating a jumping pin
Animating a Jumping Pin I recently read a fantastic article on how to animate a really slick dribble animation using Android’s AnimatedVectorDrawable. This inspired me to see how it might look when...
View ArticleDecoding Reference Types in Swift 4
Decoding Reference Types in Swift 4 Apple’s Swift 4 recently introduced some amazing new features to support archiving/unarchiving as part of Foundation. This post explores some techniques for...
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