Question

I have a tableviewController. On the UINavigationBar i will be adding a button called Edit. When the user clicks on it i need all the cells to go for the edit mode, where they could delete records.

I guess the following method does it. Am i correct ? will i get the red circle and the delete button on the cell when i click the edit button?

2.) How can i write the code for the Edit button (UIBarbuttonitem), when the user clicks it to call the following method ?

3.) When we delete the cell, i need to reload the data in the table. I wrote the code for this, is it correct. (I am not in my Mac at the moment)

- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{
    if (editingStyle == UITableViewCellEditingStyleDelete) {
        // Delete the row from the data source
        [tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade];

        [self.tableView beginUpdates];
        [discardedItems addObject:[self.entries objectAtIndex:indexPath.row]];
        [self.itemsMutableArray removeObjectsInArray:discardedItems ]; 
        self.entries = [NSArray arrayWithArray:self.itemsMutableArray];
        [self.tableView endUpdates];

        [self.tableView reloadData];
    }   
    else if (editingStyle == UITableViewCellEditingStyleInsert) {
        // Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view
    }   
}

Answer 1

First of all, you need to specify if the rows can be edited. This is done by the following method

- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath

return yes if you want all the rows to be editable.

To get the red circles use this,

Perhaps in a method called by the edit button…

UIBarButtonItem *editButton = [[UIBarButtonItem alloc] initWithTitle:NSLocalizedString(@"Edit ", @"") style:UIBarButtonItemStyleBordered target:self action:@selector(pressedEdit:)];
self.navigationItem.leftBarButtonItem = editButton;

(in viewdidload)

and in pressedEdit:

- (void) pressedEdit :(id)sender {
    UIBarButtonItem *editButton = (UIBarButtonItem*)self.navigationItem.leftBarButtonItem;

    if (!self.tabeView.editing) {
        [self.tableView setEditing:YES animated:YES];
        editButton.title = NSLocalizedString(@"Done", @"");
    }
    else {
        [self.tableView setEditing:NO animated:YES];
        editButton.title = NSLocalizedString(@"Edit", @"");
    }
}

According to the code youve written, i think you should first update the datasource and then remove the cell…