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Hi everyone, It is the first time for me working with AppKit and a NSTableView. It is backed by a NSFetchedResultsController for Core Data. When there are changes to the dataset, a Notification is being sent:
func controller(_ controller: NSFetchedResultsController<NSFetchRequestResult>, didChange anObject: Any, at indexPath: IndexPath?, for type: NSFetchedResultsChangeType, newIndexPath: IndexPath?) {
guard let links = self.fetchedResultsController.fetchedObjects else {
return
}
if self.viewContext.hasChanges {
try? self.viewContext.save()
}
self._links = links
NotificationCenter.default.post(name: .reloadLinkList, object: nil)
}
NotificationCenter.default.publisher(for: .reloadLinkList).receive(on: RunLoop.main).sink { notification in
self.list.tableView.reloadData()
self.list.linksModel.selectedRows = IndexSet([])
}
.store(in: &cancellables)
This works great for inserting and updating data. When I try to delete something, I get:
Thread 1: Fatal error: UnsafeRawBufferPointer with negative count
The code for deleting selected objects looks as following:
// selector methode for UIMenuItem`s action
@objc func onDeleteSelectedLinks(_ sender: AnyObject) {
list.linksModel.deleteLinks(links: selectedLinks)
}
// Method for deleting links from the view context
func deleteLinks(links: [LBLink]) {
for link in links {
self.viewContext.delete(link)
}
}
Thank you for any help in advance!
Posted
by
dhaydl.
Last updated
dhaydl.
.