对于理财，借款类APP来说，没有比千分位格式化来显示某些数据更有说明力了，最近刚好用到这个东西，就说一下吧。
-
(NSString *)thousandSeparatWith:(NSString *)string{
if (string.length<=0 || [string isEqualToString:@"(null)"]) {//判断值是否存在
return @"0.00";
}else if (string.floatValue < 1000) {//如果小于1000则不需要添加千分符
return string;
}else{
NSString *integerString = @"";
NSString *decimalString = @"00";
if ([string rangeOfString:@"."].location != NSNotFound) {
//带小数的情况下需要根据小数点切分，然后再添加千分符
integerString = [[string componentsSeparatedByString:@"."] firstObject];
decimalString = [[string componentsSeparatedByString:@"."] lastObject];
}else{
integerString = [[string componentsSeparatedByString:@"."] firstObject];
}
NSNumberFormatter *numberFormatter = [[NSNumberFormatter alloc] init];
[numberFormatter setPositiveFormat:@",###"];
NSString * lastString = [NSString stringWithFormat:@"%@.%@",[numberFormatter stringFromNumber:[NSNumber numberWithDouble:integerString.doubleValue]],decimalString];return lastString;}
return @"";
}
