How to access passed value in the Statefulwidget?

Question

I am passing an String from another StatefulWidget to the below CardItem StatefulWidget and then from here the String is passed to the _CardItemState as shown in the code below. But how this String passed should be accessed from _CardItemState(String itemTitle);

class CardItem extends StatefulWidget {


  String itemTitle;
  CardItem({@required this.itemTitle});
  @override
  _CardItemState createState() => _CardItemState(itemTitle);
}

class _CardItemState extends State<CardItem> {

  _CardItemState(String itemTitle);


 void initState(){
   print("INiatialize");
   print("itemTitle is  "  +  );
 }

}

Answer 1

Best way to do this is to use

widget.fieldName

    class CardItem extends StatefulWidget {
      String itemTitle;
      CardItem({@required this.itemTitle});
      @override
      _CardItemState createState() => _CardItemState(itemTitle:itemTitle);
    }
    
    class _CardItemState extends State<CardItem> {
    
      String myItemTitle;
      @override
      void initState(){

       super.initState();
       myItemTitle=widget.itemTitle;
       print("INiatialize");
       print("itemTitle is  $myItemTitle";
     
     }
    
    }

otherway round to this problem is to pass data in constructor as shown below, but the above method is recommended to be followed.

 class CardItem extends StatefulWidget {


  String itemTitle;
  CardItem({@required this.itemTitle});
  @override
  _CardItemState createState() => _CardItemState(itemTitle:itemTitle);
}

class _CardItemState extends State<CardItem> {

   String itemTitle;
  _CardItemState({this.itemTitle});


 void initState(){
   print("INiatialize");
   print("itemTitle is  $itemTitle";
 }

}