CODEWITHSUNDEEP
iphoneobjective-c
Mc.Lover
Mc.Lover

Reputation: 4994

Limit the length of characters in UITableView's cell

I have to limit the amount of characters or length of UITableView's cell texts . Because each cell displays a very long long long text and I have to limit these text into for example 140 characters . because it causes slow scrolling and memory issues and etc ...

I am loading cell texts from an SQL DB :

    appClass = (AppDelegate *)[[UIApplication sharedApplication] delegate];
    readerClass = (Reader *)[appClass.wordList objectAtIndex:indexPath.row];

    cell.textLabel.text=readerClass.Name;

Thanks.

Upvotes: 1

Views: 1140

Answers (3)

Anton
Anton

Reputation: 4018

Use:

cell.textLabel.text = (readerClass.Name.length > 140 ? [readerClass.Name substringToIndex:140] : readerClass.Name);

This sets the full readerClass.Name when it has fewer than 140 characters and sets the first 140 characters if it is longer.

Also, I'm assuming you have a UILabel in the UITableViewCell, which automatically appends ... (ellipsis) when text is truncated. If not, you can add ellipsis yourself:

cell.textLabel.text = (readerClass.Name.length > 140 ? [[readerClass.Name substringToIndex:137] stringByAppendingString:@"..."] : readerClass.Name);

Just at add on to this question, since you asked about getting the first line only:

// get first line break range
NSRange rangeOfFirstLineBreak = [cell.textLabel.text rangeOfCharacterFromSet:[NSCharacterSet newlineCharacterSet]];
// check if first line break range was found
if (rangeOfFirstLineBreak.location == NSNotFound) {
    // if it was, extract the first line only and update the cell text
    cell.textLabel.text = [cell.textLabel.text substringToIndex:rangeOfFirstLineBreak.location];
}

Upvotes: 4

Roland Keesom
Roland Keesom

Reputation: 8298

This should work. It also adds '...'

NSString *name = readerClass.Name;

if( name.length > 140 ){
    name = [place substringToIndex:140];
    name = [NSString stringWithFormat:@"%@...", name];
}

cell.textLabel.text= name;

Upvotes: 0

TheNextman
TheNextman

Reputation: 12566

Something like this:

NSRange stringRange = {0, MIN([readerClass.Name length], 140)};
cell.textLabel.text = [readerClass.Name substringWithRange:stringRange];

Upvotes: 0

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