Post not yet marked as solved
Looking at having editable text as the detail view within a master detail interface.
There are various examples out there that show how to build the NSViewRepresentable wrapper around NSTextView.
e.g. https://developer.apple.com/forums/thread/125920
However, when I try to embed the NSViewRepresentable within a NavigationSplitView the various examples (and my own attempt) don't work properly. There seems to be a race condition competing to update the internal bindings. I also see updateNSView being called multiple times when only one event, say selection change, is called once.
Using the SwiftUI TextEditor view actually works. (it is just so limited)
When the master selected item is changed the change isn't automatically propagated through to update the Coordinator. That's because there isn't a delegate for "master did change".
Take any of the TextViews on their own (not within a split view) and they work as you would expect.
The SwiftUI TextEditor does this without any obvious connection to the master.
So the first question is: has anybody solved this type of problem? I haven't yet found a link to the solution or a discussion on the internal trick to make this work.
In principle the view structure is:
NavigationSplitView {
// master list
List(selection : $selectedItem {
}
}
content: {
TextEditor(text: $selectedItem.text) // works
// or
CustomTextView(text: $selectedItem.text)
// all examples I've found so far fail to properly display changes to the text when edited
}
My current thought is that the internal Coordinator needs to know that there has been a selection change so you can synchronise the significant change in the contents of the text binding. Again TextEditor doesn't need to know that. makeNSView is only called once, so there isn't any regeneration of the NSTextView that you could rely on.
Have tried on both macOS and iOS and see the same results.
Post not yet marked as solved
Porting some Core Data code that was written several years ago. It has an entity called Transaction.
This pre-dates Transaction that appeared in Animation.
So Apple is now colliding with my naming.
Looks like light weight migration isn't going to do the trick and I need to do more work for migration to work.
Checking whether there is some magical use of namespace where I could separate my entity use of Transaction. Or it's full weight migration...
Post not yet marked as solved
I have an app that has lots of booking dates. I need a quick way to open the Mac Calendar on the date of the booking just so the user can cross check the dates for clashes. At this stage, I don't need to build UI into my app that shows the dates. What is already in Calendar is sufficient - don't reinvent the wheel.
A long time ago, calshow seemed to be the way to do this. But that seems to have withered away.
Opening a URL with ical:// opens calendar, but not at the date required since there seems to be no URL scheme defined.
I could query Event Kit, but that means building unnecessary UI at this time.
There's possibly a way to do this with Scripting Bridge and probably a way to do this with a call to an AppleScript.
Is there no simpler way to do this in 2023 on a Mac?
Post not yet marked as solved
fault: Illegal attempt to return an error without one in /Library/Caches/com.apple.xbs/Sources/Persistence/sqlcore/NSSQLCore.m
Has anybody seen this error message before? Totally unclear what is causing this. Fairly straightforward core data / CloudKit / SwiftUI app.
The app doesn't crash it just locks / freezes the screen on a SwiftUI app. A list view becomes unresponsive - it no longer scrolls.
https://stackoverflow.com/questions/75944617/icloud-app-hangs-crashes-if-user-signs-into-account-while-app-is-running it's more than just me....
Post not yet marked as solved
I have a Share Extension project that is working fine in Monterey but fails to appear in the Share Sheet for Ventura.
It is a simple text share.
Are there any obvious changes to the info.plist requirements in Ventura?
Debugging output isn't giving any obvious clues (there's a lot from the host application). Starting from scratch with a clean project and using the default (not-for-release) NSExtensionActivationRule TRUEPREDICATE works. Using Strict = 1 and DictionaryVersion = 2 works for Monterey but is causing a crash on Ventura, which suggests something that used to work isn't anymore.
Post not yet marked as solved
Tracking down some errors in ValueTransformers in an old project. It seems that String.self can't be returned as AnyClass since it is a value type.
So this works in Xcode 12.5:
func test() - AnyClass
{
// just for checking
type(of: NSString.self)
type(of: String.self)
type(of: NSNumber.self)
return NSString.self
}
But this doesn't:
func test2() - AnyClass
{
return String.self
}
Cannot convert return expression of type 'String.Type' to return type 'AnyClass' (aka 'AnyObject.Type')
So back to the ValueTransformer. This was the code that seemed to compile circa 2016. Now has a warning that it will fail.
override class func transformedValueClass() - AnyClass
{
return String.self as! AnyClass
}
String is a struct not a class.
And doing this produces an error - because String is a struct
override class func transformedValueClass() - AnyClass
{
return String.self
}
So is the correct approach to work with NSStrings in ValueTransformers? Simply cast the last return with:
return swiftNSString(utf8String:string)
Similarly, Bool is also a struct and has the same issues. But BOOL isn't available so it looks like NSNumber.
Post not yet marked as solved
Are there any known reasons why a single NSFilePresenter instance has its presentedItemDidChange function called twice when the contents of the file is rewritten just once?
Big Sur 11.2.3
I have extracted out the functionality into a reader and writer app and currently can't reproduce the issue in a simplified case.
But when it is put into a full app context, I can see that two separate threads are initiating the call to presentedItemDidChange(). Checking file size and date modified show that they should be identical files. Only writing a string into a file, so not changing the file in any other way. So it doesn't seem to be two changes being made to the file.
I only have one instance of the NSFilePresenter, it is referencing a file, not a directory.
Breakpointing at presentedItemDidChange shows that the framework is going through an identical call sequence. But it's happening in two different threads.
Not currently using any file coordination since there's only one file and one write operation. The meta data would suggest that it's not emptying the file, then writing it, causing two events 1) when the file size goes to zero and then 2) when the file is written and closed.
Checking the file presenter object, and there's only one instance and the same sender object is defined.
So it looks like the framework is triggering twice from two different threads. I don't have multiple processes or multiple file presenters. So unclear why two different threads are originating this.
Post not yet marked as solved
Seeing different behaviour when similar code is presented in a Mac app and either a Mac Playground or command line app.
The objective is create an array of range references into a string.
/* Define a string */
let source = "Hello"
/* Define an array that is a collection of ranges within the string. In this case use the whole range. */
let array = [source.startIndex..<source.endIndex, source.startIndex..<source.endIndex]
/* Iterate */
for r in array
{
...
}
This works in the Playground and Command Line versions but in a Mac app, the same code produces:
For-in loop requires 'Range<String.Index>?' to conform to 'Sequence'; did you mean to unwrap optional?
The Range<String.Index> items in the array are themselves not Sequences.
Unclear why essentially the same code loop is producing an error message when used in the Mac app but no error for the Playground or command line. Nothing defined is an optional.
Experimented with 12.1 and 12.2 - same results so far.
Has anybody seen anything similar?
Post not yet marked as solved
Is there an elegant way to produce macOS conforming label/text field alignment with SwiftUI?
Once upon a time the Human Interface Guidelines provided diagrams illustrating how Labels should be right aligned on macOS. Big Sur's System Preferences > General still presents this best practice with the colons right aligned (the design guidelines seem to no longer mention this) and the text fields left aligned.
Whilst we will use a combination of VStacks and HStacks to layout an interface in this manner, it isn't clear how you currently specify a modifier to align the contents of multiple HStacks so that each has all the text labels right aligned, all the Text Fields left aligned (and the same width or opt in to do so) and also maintain a constant and standard distance between every Label and TextField.
To add, one might think that in SwiftUI parlance that we would drop the colon (:) from the Text definition and that SwiftUI would automagically put that in for us. Also not put it in on iOS. Dropping the colon from the Text string would help accessibility - one less character to convey.
HorizontalAlignment didn't seem to offer this.
A naive form layout for macOS doesn't produce a HIG-happy visual design.
Post not yet marked as solved
I'm assuming that the Embed functionality that is part of Swift UI didn't make it into the Xcode 12 preview.
I don't see it in the Editor menu. I have no context menu that looks like the serving suggestion in the video.
Didn't see a reference in the release notes.
I'm assuming it's not just my fresh install.
purple.