ios 手机号码隐藏中间4位为*号

{

    NSString *hideNumStr = Str;

    NSString *placeHolderStr = [NSString string];

    if ([Str isNotBlank] && [holderSingleStr isNotBlank])

    {

        for (int i=0; i<length; i++)

        {

            placeHolderStr = [placeHolderStr stringByAppendingString:holderSingleStr];

        }

        hideNumStr = [Str stringByReplacingCharactersInRange:NSMakeRange(location, length) withString:placeHolderStr];

    }

    return hideNumStr;

}

NSString *userPhone = [user.user_phone stringByReplacingCharactersInRange:range withString:@"****"];

ios 手机号码隐藏中间4位为*号

原文：https://www.cnblogs.com/MiKiNuo/p/13829898.html