Created
September 12, 2014 19:41
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Swift boilerplate NSFetchedResultsControllerDelegate methods for a UITableViewController subclass
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| // MARK: NSFetchedResultsControllerDelegate | |
| func controllerWillChangeContent(controller: NSFetchedResultsController) { | |
| self.tableView.beginUpdates() | |
| } | |
| func controller(controller: NSFetchedResultsController, | |
| didChangeObject anObject: AnyObject, | |
| atIndexPath indexPath: NSIndexPath?, | |
| forChangeType type: NSFetchedResultsChangeType, | |
| newIndexPath: NSIndexPath?) | |
| { | |
| switch(type) { | |
| case .Insert: | |
| if let newIndexPath = newIndexPath { | |
| tableView.insertRowsAtIndexPaths([newIndexPath], | |
| withRowAnimation:UITableViewRowAnimation.Fade) | |
| } | |
| case .Delete: | |
| if let indexPath = indexPath { | |
| tableView.deleteRowsAtIndexPaths([indexPath], | |
| withRowAnimation: UITableViewRowAnimation.Fade) | |
| } | |
| case .Update: | |
| if let indexPath = indexPath { | |
| if let cell = tableView.cellForRowAtIndexPath(indexPath) as? UITableViewCell { | |
| configureCell(cell, withObject: object) | |
| } | |
| } | |
| case .Move: | |
| if let indexPath = indexPath { | |
| if let newIndexPath = newIndexPath { | |
| tableView.deleteRowsAtIndexPaths([indexPath], | |
| withRowAnimation: UITableViewRowAnimation.Fade) | |
| tableView.insertRowsAtIndexPaths([newIndexPath], | |
| withRowAnimation: UITableViewRowAnimation.Fade) | |
| } | |
| } | |
| } | |
| } | |
| func controller(controller: NSFetchedResultsController, | |
| didChangeSection sectionInfo: NSFetchedResultsSectionInfo, | |
| atIndex sectionIndex: Int, | |
| forChangeType type: NSFetchedResultsChangeType) | |
| { | |
| switch(type) { | |
| case .Insert: | |
| tableView.insertSections(NSIndexSet(index: sectionIndex), | |
| withRowAnimation: UITableViewRowAnimation.Fade) | |
| case .Delete: | |
| tableView.deleteSections(NSIndexSet(index: sectionIndex), | |
| withRowAnimation: UITableViewRowAnimation.Fade) | |
| default: | |
| break | |
| } | |
| } | |
| func controllerDidChangeContent(controller: NSFetchedResultsController) { | |
| tableView.endUpdates() | |
| } |
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http://oleb.net/blog/2013/02/nsfetchedresultscontroller-documentation-bug/