How to populate a cell in UITableView with an edited content? - ios

Question

Maybe I didn't ask it properly, because I'm not really sure how, so I will explain myself:
I have a simple notes app with two VC's:
table view controller - to list all the notes.
view controller - to create new notes.
In the table vc I have an unwindToList method that create an instance of the create notes page to get the note object that will be passed and if its not nil I will add it to the notes array and reload the data;
- (IBAction) unwindToList: (UIStoryboardSegue *) segue
{
NMCreateNotesViewController *source = [segue sourceViewController];
NMNote *note = source.note;
if (note != nil) {
[self.notes addObject:note];
[self.tableView reloadData];
}
}
and an prepareForSegue method that will identify if this segue is a note segue (this is the segue I JUST want to preform editing in the create note page and when a user taps the save button, to save it in the same cell that the segue came from...):
- (void) prepareForSegue:(UIStoryboardSegue *)segue sender:(UITableViewCell *)sender
{
if ([[segue identifier] isEqualToString:#"noteSegue"]) {
NMCreateNotesViewController *destination = [segue destinationViewController];
NSInteger indx = [self.tableView indexPathForCell:sender].row;
NMNote *note = self.notes[indx];
destination.passedInString = note.content;
}
}
In the view controller that create the notes I have a prepareForSegue method that looks like this:
- (void) prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if (sender != self.saveButton) return;
if (self.textField.text.length > 0) {
self.note = [[NMNote alloc] init];
self.note.content = self.textField.text;
}
}
Now, my problem is that when i'm editing a note from the noteSegue i'm creating a new note with the edited content instead of populating the same cell of the segueNote with the new edited content...
this is how the problem looks like:
Please help me to figure this out :/
Appreciate it!

Answer 1

I don't quite understand your explanation.
You have a table view controller that is a master view controller and a note view controller that is a detail view controller.
The usual way to handle communications back from a detail view controller to it's master is to set up a delegate.
Define a delegate property in the detail (notes) VC that will point back to the master.
In the master's prepareForSegue, set destination.delegate = self.
Then, define a protocol for the delegate that the detail view controller will use to tell the master that the contents of a list item has changed.
You will probably need to tell the detail view controller the indexPath of the item that's being edited in the master-to-detail segue, and then before unwinding to the master, invoke a delegate method that gives the edited item to the master, along with it's indexPath so the master can save the changes and redisplay that cell.