iphone sdk: How to add checkboxes to UITableViewCell??

Question

Hi, some time ago someone already asked this question and a few answers were given but i didn't really understand any of them. So i was wondering if anyone could please write an easy to understand tutorial on how to do the things shown on the image below:

http://img208.yfrog.com/img208/6119/screenshotkmr.png

I would be so greatful if anyone can share exactly how to this because it looks really cool and i would love to use something similar in my application :-)!

Answer 1

One of the way I can think of is you do custom UITableViewCell (this tutorial is good for starting. This is another, similar one). Inside the custom UITableViewCell you need to put a UIButton there with a circle image. When user select the button, you change the image to the green circle

Answer 2

Make a unchecked and checked image..

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

    static NSString *CellIdentifier = @"Cell";

    UITableViewCell *cell = [self.tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
        cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:CellIdentifier] autorelease];
    }

    if ([selectedRowsArray containsObject:[contentArray objectAtIndex:indexPath.row]) {
        cell.imageView.image = [UIImage imageNamed:@"checked.png"];
    }
    else {
       cell.imageView.image = [UIImage imageNamed:@"unchecked.png"];
    }
    UITapGestureRecogniser *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleChecking:)
    [cell.imageView addGestureRecognizer:tap];
    [tap release];

    cell.textLabel.text = [contentArray objectAtIndex];
    return cell;
}

- (void) handleChecking:(UITapGestureRecognizer *)tapRecognizer {
    CGPoint tapLocation = [tapRecognizer locationInView:self.tableView];
    NSIndexPath *tappedIndexPath = [self.tableView indexPathForRowAtPoint:tapLocation];

    if (selectedRowsArray containsObject:[contentArray objectAtIndex:tappedIndexPath.row]) {
        [selectedRowsArray removeObject:[contentArray objectAtIndex:tappedIndexPath.row]];
    }
    else {
        [selectedRowsArray addObject:[contentArray objectAtIndex:tappedIndexPath.row]];
    }
    [self.tableView reloadRowsAtIndexPaths:[NSArray arrayWithObject:tappedIndexPath] withRowAnimation: UITableViewRowAnimationFade];
}

That should do it.. May have some typos..