How to format double value into string with 2 decimal places after dot and with separators of thousands?

Question

I have a double value in Objective-C and I need to place its value into label. How should I format it into string with 2 decimal places after dot and with separators of thousands?

Answer 1

Use NSNumberFormatter, for example:

NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init];
[formatter setPositiveFormat:@"#,##0.00" ];

NSString *string = [formatter stringFromNumber:[ NSNumber numberWithDouble:1234567.8901 ] ];
// string is now "1,234,567.89"
[formatter release];