How to get commas in my number ie 24,532,664 using UILabel?

Question

How to set up the display to show commas: 24,532,664 as opposed to 24532664?

Answer 1

Using NSNumberFormatter.

Listing 1

NSNumberFormatter *numberFormatter = [[NSNumberFormatter alloc] init];
[numberFormatter setNumberStyle:NSNumberFormatterDecimalStyle];
NSNumber *myNumber = [NSNumber numberWithInteger:122344];
NSString *formattedNumberString = [numberFormatter stringFromNumber:myNumber];
[numberFormatter release];  // if you aren't using ARC.
NSLog(@"formattedNumberString: %@", formattedNumberString);
// Output for locale en_US: "formattedNumberString: formattedNumberString: 122,344"

Answer 2

You may use -[NSString initWithFormat:locale:].

NSLocale *locale = [NSLocale currentLocale]; // always use the user's locale
NSString *string = [[NSString alloc] initWithFormat:@"%d" locale:locale, 24532664];

If the commas are mandatory, you may choose a specific locale (en_US), in order to always get the same result. But that's not a good idea if the string is meant to be displayed to the user.

NSLocale *locale = [[NSLocale alloc] initWithLocaleIdentifier:@"en_US"];

Answer 3

You need to use NSNumberFormatter for this.

E.g. Formatting a number to show commas and/or dollar sign

Don't forget to clean up after!!!