Deleting rows in uitableview

Question

I am Having an application where, if the user enters data the rows will be updated with that data

Can i use One Single Button say 'delete' which when clicked will delete all the rows in the tableview at once.?

Answer 1

Yes you can do that. First remove all data from your data source, then reload your table. For ex. -

[yourArrayDataSource removeAllObjects];
[yourTable reloadData];

To animate the deletion of rows - do this in an IBAction method & link it to your UIButton. As soon as you press the button you will have a smooth awesome animation making all your rows fade out.

-(IBAction)deleteRows
{
    [yourTable beginUpdates];
    for(int i=0; i<[yourArrayDataSource count]; i++)
    {
        indexPath = [NSIndexPath indexPathForRow:i inSection:0];
        [self.searchResTable deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath]  withRowAnimation:UITableViewRowAnimationFade];
    }
    [yourTable endUpdates];
}

There are various animations that you can use here-

UITableViewRowAnimationBottom
UITableViewRowAnimationFade
UITableViewRowAnimationMiddle
UITableViewRowAnimationNone
UITableViewRowAnimationRight
UITableViewRowAnimationTop

Answer 2

make a button and in the button action method

-(IBAction)deleteRows
{
     [array removeAllObjects];
    [tableview reloadData];
}