Question

http://developer.apple.com/library/ios/#documentation/userexperience/conceptual/TableView_iPhone/ManageInsertDeleteRow/ManageInsertDeleteRow.html

I need both insertion and deletion options so…

self.navigationItem.rightBarButtonItem = self.editButtonItem;
UIBarButtonItem *addButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(addItem:)];
self.navigationItem.leftBarButtonItem = addButton;

Thats all good so far. I am done programming with “deletion” but having trouble with “insertion”

   - (void)addItem:sender {
}

What do I add inside this addItem to start “Editing mode” and change my EditingStyle to UITableViewCellEditingStyleInsert? What the hell is that iteminputcontroller as seen in the apple library? There’s no explanation on that and help is vague online 🙁

Answer 1

Invoke setEditing function of your tableView inside your addItem method.

- (void)setEditing:(BOOL)editing animated:(BOOL)animate

Should be like below.

- (void)addItem:sender {
   [myTableview setEditing:YES animated:YES];
}

Return UITableViewCellEditingStyleInsert from your editingStyleForRowAtIndexPath method.

     - (UITableViewCellEditingStyle)tableView:(UITableView *)aTableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath {

        if(someCondtion){
        return UITableViewCellEditingStyleInsert;
        } else {
        return UITableViewCellEditingStyleDelete;
        }
}

Update the data model according to edit actions delete or insert.

- (void)tableView:(UITableView *)aTableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle
    forRowAtIndexPath:(NSIndexPath *)indexPath {

    if (editingStyle == UITableViewCellEditingStyleDelete) {
       //put code to handle deletion
       [myTableView reloadData];
    } else if (editingStyle == UITableViewCellEditingStyleInsert) {
       //put code to handle insertion
       [myTableView reloadData];
    }
}