NSFileCoordinator examples?

Targets macOS
1

Does anyone have an example of using NSFileCoordinator to access files under iCloud regimen?
Increasingly, simply trying to open or examine a file , when iCloud has been at it, can cause blocking.
Apple says use FileCoordinator to do it asynchronously, which I confess sounds hideous, but I need to give it a try

(Apple will not allow files to be excluded from iCloud, and the low-key workaround/speedup is to turn off Internet access for a while. This is not great/acceptable)

2

We got that wrapped in MBS Xojo Plugins: NSFileCoordinatorMBS class.

You basically make an instance, then call one of the methods and wait for the corresponding event to tell you that the file is available for read/write. This may take a while since iCloud may need to download it.

3

We got that wrapped

Thanks Christian, I did just find the classes. This is encouraging.

However, after many read-throughs, I cannot understand any of the documentation.
:slight_smile:

I’ll see if I can apply 'make an instance, then call one of the methods and wait ’

Edit: I cannot.

5

I can try later.

6

So, I made an example and used addHandler. You don’t need that as you could use a subclass instead to catch the event.

Sub Pressed() Handles Pressed
  dim ofd as new OpenFileDialog
  
  dim f as FolderItem = ofd.ShowModal(Self)
  
  if f = nil then return 
  
  fp = new NSFilePresenterMBS
  fc = new NSFileCoordinatorMBS(fp)
  
  AddHandler fc.coordinateReadingItemAtURL, AddressOf coordinateReadingItemAtURL
  
   // don't ask other apps to save change
  dim error as NSErrorMBS
  dim flags as integer = NSFileCoordinatorMBS.NSFileCoordinatorReadingWithoutChanges
  fc.coordinateReadingItemAtURL(f, flags, error)
  
  if error <> nil then
    MessageBox error.localizedDescription
  end if
  
End Sub

this picks a file and then makes a request.

And later you get the an event to read the file.

I made an example for you:

NSFileCoordinator Test.zip (5.4 KB)

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