how I fix this Error The instance 'widget' can't be accessed in an initializer

Question

I'm trying to access the value of the variable String UserType, and String userID; on _HomePageState, I want to pass the value of both UserType and userID Variable to ProfilePage() And UploadPage(),

    The problem displayed is "The instance member'widget' can't be accessed in an initializer. 
Try replacing the reference to the instance member with a different expression".

Here is MY StatefulWidget Class inside I declare Usertype and userID variable,i want to pass them to ProfilePage() And UploadPage(), inside _HomePageState,

class HomePage extends StatefulWidget {
      String UserType;
      String userID;
     HomePage({Key key,@required this.UserType,@required this.userID}):super(key: key);
      @override
      _HomePageState createState() => _HomePageState();
    }

class _HomePageState extends State<HomePage> {
  int _CurrentIndex=0;
  String owneruerID= widget.userID;
  dynamic uploadusertypes=widget.UserType;

final List<Widget>_children=[
        TimeLinePage(),
        SearchPage(), //search(),
        UploadPage(UserSID:owneruerID,uploadusertypes:uploadusertypes),
        NotificationsPage(),
        ProfilePage(userProfileID:widget.userID),
        ];

 @override
  void initState(){
  super.initState();
    uploadusertypes= widget.UserType;
    owneruerID= widget.userID; 
  }
  @override
  Widget build(BuildContext context) {
return Scaffold(
   body: WillPopScope(
     onWillPop: onwillpops,
     child: buildHomeScreen(),
   ),
 );
}

  Scaffold buildHomeScreen(){
        return Scaffold(
          backgroundColor: Colors.black,
          body: _children[_CurrentIndex],
          bottomNavigationBar: CupertinoTabBar(
            currentIndex: _CurrentIndex,
            backgroundColor: Colors.black,
            onTap: onTabchangePage,
            activeColor: Colors.green,
            inactiveColor: Colors.white,
            items: [
              BottomNavigationBarItem(icon:Icon(Icons.home),title: Text('home'),),
              BottomNavigationBarItem(icon:Icon(Icons.search)),
              BottomNavigationBarItem(icon:Icon(Icons.photo_camera,size: 40,)),
              BottomNavigationBarItem(icon:Icon(Icons.notifications)),
              BottomNavigationBarItem(icon:Icon(Icons.person_add_alt_1_sharp)),
            ],
          ),
        );
    }

 void onTabchangePage(int index) {
    setState(() {
      _CurrentIndex=  index;
    });

  }
}

i Correct the Bove but still the Error Exists

class HomePage extends StatefulWidget {
   String UserType;
   String userID;
  HomePage({Key key,@required this.UserType,@required this.userID}):super(key: key);
  @override
  _HomePageState createState() => _HomePageState();
}
class _HomePageState extends State<HomePage> {
  String owneruerID;
  dynamic uploadusertypes;

 final List<Widget>_children=[
        UploadPage(UserSID:owneruerID,uploadusertypes:uploadusertypes),
        ProfilePage(userProfileID:owneruerID),
        ];


  void initState(){
    super.initState();
    uploadusertypes= widget.UserType;
    owneruerID = widget.userID;
  }

}

i already Initialize in initState, please see the code above — beby, Jun 15 '21 at 16:19
yes , remove the initialization in declaration , and keep it in initState — Fatima ayaa, Jun 15 '21 at 16:20
Could you please read the code I post right now I correct it by using your comment but The Error Still exists — beby, Jun 15 '21 at 16:37
yes i said remove the initialization of _children, and use it int initState , look at my answer — Fatima ayaa, Jun 15 '21 at 16:40

Fatima ayaa · Accepted Answer · 2021-06-15T16:44:52.123

String owneruerID;
dynamic uploadusertypes;
List<Widget>_children;

instead of

String owneruerID= widget.userID;
  dynamic uploadusertypes=widget.UserType;

// remove and keep just final List<Widget>_children
    final List<Widget>_children=[
            TimeLinePage(),
            SearchPage(), //search(),
            UploadPage(UserSID:owneruerID,uploadusertypes:uploadusertypes),
            NotificationsPage(),
            ProfilePage(userProfileID:widget.userID),
            ];

in initState

@override
  void initState(){
  super.initState();
    uploadusertypes= widget.UserType;
     owneruerID = widget.userID;

//add it here
      _children=[
        TimeLinePage(),
        SearchPage(), //search(),
        UploadPage(UserSID:owneruerID,uploadusertypes:uploadusertypes),
        NotificationsPage(),
        ProfilePage(userProfileID:widget.userID),
        ];

Thank you Brother it Works for me, You are Smart. – beby Jun 15 '21 at 16:57 — beby, Jun 15 '21 at 16:57

how I fix this Error The instance 'widget' can't be accessed in an initializer

1 Answers1