Cant delete cell in UITableView - ios

Question

I'm using Xcode 5.1.1.
Created single view app for an iPhone. I'm testing in Xcode iOS simulator and everything works fine until I try to delete. Checked the code several times. In app "Edit" -> red "Minus" appears on every row then i'm pressing "Minus" and appears red "delete" button, that cant be pressed.
#import "ViewController.h"
#import "AddViewController.h"
#interface ViewController ()
#end
#implementation ViewController
#synthesize data;
- (void)viewDidLoad
{
[super viewDidLoad];
data = [[NSMutableArray alloc] initWithObjects: #"item1", #"item2", #"item3", nil];
self.navigationItem.leftBarButtonItem = self.editButtonItem;
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
}
#pragma mark - Table view data source
-(NSInteger) numberOfSectionsInTableView: (UITableView *) tableView {
return 1;
}
-(NSInteger) tableView: (UITableView *) tableView numberOfRowsInSection:(NSInteger)section {
return [data count];
}
-(UITableViewCell *) tableView: (UITableView *) tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *cellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier forIndexPath:indexPath];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier];
}
[[cell textLabel] setText:[data objectAtIndex:[indexPath row]]];
return cell;
}
// Called after 'Save' is tapped on the AddViewController
- (IBAction) unwindToTableViewController: (UIStoryboardSegue *) sender {
AddViewController *addViewController = (AddViewController *) [sender sourceViewController];
NSString *text = [[addViewController textField] text];
if(![text length] == 0 && ![[text stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]] length] == 0) {
// add it to the tap of the data source
[data insertObject:text atIndex:0];
NSIndexPath *indexPath = [NSIndexPath indexPathForRow:0 inSection:0];
// insert it into tableView
[[self tableView] beginUpdates];
[[self tableView] insertRowsAtIndexPaths:#[indexPath] withRowAnimation:UITableViewRowAnimationAutomatic];
[[self tableView] endUpdates];
}
}
- (void)setEditing:(BOOL)editing animated:(BOOL)animated {
[super setEditing:editing animated:animated];
[[self tableView] setEditing:editing animated:animated];
}
- (void)tableView:(UITableView *)tableView comitEditingStyle: (UITableViewCellEditingStyle) editingStyle forRowAtIndexPath: (NSIndexPath *) indexPath {
if (editingStyle == UITableViewCellEditingStyleDelete) {
[data removeObjectAtIndex:[indexPath row]];
[tableView deleteRowsAtIndexPaths:#[indexPath] withRowAnimation:UITableViewRowAnimationFade];
}
}
#end

Answer 1

You mispelled commit as comit in the method name. Not sure if this is the problem, but it is certainly a problem. It should be
- (void)tableView:(UITableView *)tableView commitEditingStyle: (UITableViewCellEditingStyle) editingStyle forRowAtIndexPath: (NSIndexPath *) indexPath {
if (editingStyle == UITableViewCellEditingStyleDelete) {
[data removeObjectAtIndex:[indexPath row]];
[tableView deleteRowsAtIndexPaths:#[indexPath] withRowAnimation:UITableViewRowAnimationFade];
}
}

Answer 2

You handle deletion, but you don't seem to enable it:
- (UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath
{
return UITableViewCellEditingStyleDelete;
}

Answer 3

Sounds like you aren't Reloading Data after the deletion event.
On tap of the delete button, once you remove the data from the data source, call
[self.tableView reloadData];
and see if that works.

Answer 4

This has to do with how you set your autoresizing mask - it's a weird behavior that presented itself on iOS 7. Try calling this in your viewDidLoad function - [self view].autoresizingMask=UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight and this for your tableView - [tableView setAutoresizingMask:UIViewAutoresizingFlexibleWidth]. I had the same issue with an app and this fixed it.

Answer 5

- (void)tableView:(UITableView *)tableView commitEditingStyle: (UITableViewCellEditingStyle) editingStyle forRowAtIndexPath: (NSIndexPath *) indexPath {
if (editingStyle == UITableViewCellEditingStyleDelete) {
[data removeObjectAtIndex:[indexPath row]];
[tableView deleteRowsAtIndexPaths:#[indexPath] withRowAnimation:UITableViewRowAnimationFade];
}
[self.tableView reloadData];}