Way back when I dabbled around with ObjC (that was in 2002!) I created a small app that shows images from disk. About a year ago I upgraded this app to 64bit and ARC. This went well after a bit of fla

Sometimes I get the following message logged when by app quits: *** _NSDocumentBasicAsyncOperation 0x600003e25a00 went isFinished=YES without being started by the queue it is in It seems to be somethi

Anybody else have problems with developing iOS keyboard extensions not working? I've barely added any code except a Next Keyboard button, figured out how to attach Xcode to the keyboard target after l

Hi all, I run a software company in the UK and we're looking to hire some full-time Mac software developers to join our growing team in Edinburgh, Scotland on a permanent basis. We'll be advertising f

I have a weird situation where I show an open panel via beginSheetModalForWindow:completionHandler:. The problem is that it works OK with Mojave (and before, I assume), but it doesn't work in Catalina

Can anyone explain this? I’m getting the following warning in my build: But when I look at the file info for that .xib file: And the deployment target in the target as a whole: Am I missing something?

I’m modernising some old code that does drag and drop the old, simple and perfectly functional (but deprecated) way. The new way seems twice as complicated to me, but hey-ho. Anyway, I’m creating NSDr

I have an iOS app (iOS 12.4+) which did work on iOS 12.4 … iOS 13.2 when build with Xcode 11.1. Now I have upgraded to Xcode 11.2 and the app no longer works on iOS 13.2 devices. When I do: BGTaskSche

I have an app I’d like to notarize for distribution outside the app store. To do this, it requires the hardened runtime entitlement. I have added that in the project settings. When I try and submit th

I have an app that can launch apps and scripts. A script might target any app, so I can't use com.apple.security.temporary-exception.apple-events and add an app identifier for every possible app in th

I have written a small Cocoa program that works in High Sierra but stopped working in Mojave. The program loads a graphics file from disk and displays it full screen. At the bottom it should write the

A friend of mine has a problem: When he installs an app (via Xcode) on his iPhone it works fine (probably the app will expire after one year). But when he installs the same app on his iPad, the app wi

One thing I find when working with scroll views is that making the contained view flipped is usually helpful. If you return YES from an override to -isFlipped, scroll views default to a position with

I have a UITableView that has x number of simple rows (name and image), then one row at the end that also has a name and image, but also uses a disclosure indicator accessory, which opens a new scene

Xcode 11, targeted at 13 or 12.x (no difference to this issue). I need to accumulate accelerometer data from Core Motion over long periods of time (I’m aware of the 12-hour / 3-day limits). The class

I’d stick with the button, because its clickability shouldn’t be in doubt. The text field, if it’s just a label, is not generally assumed to be clickable, and if you show it as editable, that sends th

Is anyone out there using Devmate as a means of handling licensing in their Mac apps? If so, you’ll know it’s deprecated as of December, and so far Fastspring, who bought out Devmate, appear not to ha

Hi All, In a definition like this: func NSLocationInRange(_ loc: Int, _ range: NSRange) -> Bool What does the “_” by itself mean? I can’t seem to find anywhere in the documentation where this is menti

The subject more or less says it. I tried using code similar to how I do it with instance methods, to no avail. I'm now wondering if it's actually possible. (It's a read-only property, if that makes a

Hi all, I have realised I’m having some subtle problems with images not being saved quite how I need them to be, and the problem seems to be caused by colorspace issues. Up until now I’ve kind of igno