iOS 金钱格式化

            NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init];

            formatter.numberStyle = NSNumberFormatterCurrencyStyle; //NSNumberFormatterDecimalStyle;

            NSString * awardFloatStr = [NSString stringWithFormat:@"%0.2f",[[dict objectForKey:@"awardMoney"] floatValue]];

            NSString *string = [formatter stringFromNumber:[NSNumber numberWithFloat:[awardFloatStr floatValue]]];