Move Variable from Class to Class - Dart Flutter

Question

How do I get the value of the List data to be accessed from the class Details Page? The value is already set in the constructor via a page route.

class TicketDetailsPage extends StatefulWidget {
  final List data; //<--This is the List

  TicketDetailsPage({Key key, this.data}) : super(key: key);

  @override
  State<StatefulWidget> createState() => new _State();

 }

class _State extends State<TicketDetailsPage> {

 @override
 Widget build(BuildContext context) {

 return MaterialApp(
    title: "Ticket Details",
    debugShowCheckedModeBanner: false,
    home: DetailsPage(),
    );
 }
}
 class DetailsPage extends StatelessWidget { 
  //<--Access the list right here-->
  }

Viren V Varasadiya · Accepted Answer · 2020-02-24 08:10:32Z

1

You have to pass the list to DetailsPage, but before that you have to access TicketDetailsPage data in its state using widget in following way.

widget.data

Now You can pass data and accept data in DetailsPage using constructor as below.

class _State extends State<TicketDetailsPage> {

 @override
 Widget build(BuildContext context) {

 return MaterialApp(
    title: "Ticket Details",
    debugShowCheckedModeBanner: false,
    home: DetailsPage(data:widget.data),
    );
 }
}


class DetailsPage extends StatelessWidget { 
  final List data; //<--This is the List

   DetailsPage({this.data});
  }

edited Feb 24, 2020 at 8:10

answered Feb 24, 2020 at 7:46

Viren V Varasadiya

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1 Comment

Viren V Varasadiya Over a year ago

@Abion47 thank you for your suggestion. i generally preferred to answer with explanation, but this time i didn't. However, now added some explanation too.

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