Flutter parameters transfering across pages: What about the parameter "key"?

Issue

I have made two pages, PersonalPage and InformationPage. I want to transfer some parameters from PersonalPage to InformationPage. Here are my codes.
PersonalPage:

Navigator.push(
          context,
          MaterialPageRoute(
              builder: (context) => Information(phoneNumber: phoneNumber, nickName: nickName, realName: realName, key: key)
          ),
        );

InformationPage:

class Information extends StatelessWidget {
  String? phoneNumber;
  String? realName;
  String? nickName;
  Information({required Key key, required this.phoneNumber, required this.realName, required this.nickName})
      : super(key: key);
  @override
  Widget build(BuildContext context) {
    // TODO: implement build
    //Some codes
  }
}

In PersonalPage, there is an error in the line including "builder:":

Undefined name 'key'.

It seems that I need to assign key. But I don’t know what thing I should put to key. So what should I put to key？ Or can I just take measures to avoid assigning it?
Thanks a lot.

Solution

You need to pass Key as the key field is set required.

Navigator.push(
          context,
          MaterialPageRoute(
              builder: (context) => Information(key: Key('keyName'), phoneNumber: phoneNumber, nickName: nickName, realName: realName, key: key)
          ),
        );

Answered By – Sahil Hariyani

Answer Checked By – David Marino (FlutterFixes Volunteer)