Question

I’m trying to support customers whose native language uses commas rather than decimal points, and I created a method that I think should work, but I have not been able to set an NSLocale to produce commas in the value. Here is the method:

-(NSString *)localNumber:(double)d decimals:(int)n{

    NSLocale *deLoc = [[NSLocale alloc] initWithLocaleIdentifier:@"fr"];

    NSDecimalNumber *dn = [NSDecimalNumber decimalNumberWithString:[NSString stringWithFormat:@"%4.*f", n, d]];
    NSString *dnS = [dn descriptionWithLocale:deLoc];

    return dnS;
}

But the output is always like:

1.67

Answer 1

It appears that descriptionWithLocale has a bug and it isn’t working correctly. I verified that the decimal seperator for the “fr” locale is indeed a comma, but it is using the period.

Anyway, here is a way to do it:

-(NSString *)localNumber:(double)d decimals:(int)n{
    NSDecimalNumber *dn = [NSDecimalNumber decimalNumberWithString:[NSString stringWithFormat:@"%4.*f", n, d]];

    NSLocale *deLoc = [[NSLocale alloc] initWithLocaleIdentifier:@"fr"];
    NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init];
    [formatter setLocale:deLoc];
    [formatter setNumberStyle:NSNumberFormatterDecimalStyle];
    NSString *dnS = [formatter stringFromNumber:dn];

    return dnS;
}