Round double value to 2 decimal places

Question

I have a double value as 22.368511 I want to round it to 2 decimal places. i.e. it should return 22.37

How can I do that?

Answer 1

Use NSNumber *aNumber = [NSNumber numberWithDouble:number]; instead of NSNumber *aNumber = [NSNumber numberWithFloat:number];

+(NSString *)roundToNearestValue:(double)number
{
    NSNumber *aNumber = [NSNumber numberWithDouble:number];

    NSNumberFormatter *numberFormatter = [[NSNumberFormatter alloc] init];
    [numberFormatter setNumberStyle:NSNumberFormatterDecimalStyle];
    [numberFormatter setUsesGroupingSeparator:NO];
    [numberFormatter setMaximumFractionDigits:2];
    [numberFormatter setMinimumFractionDigits:0];
    NSString *string = [numberFormatter stringFromNumber:aNumber];        
    return string;
}