Question 174818 in Flutter Question posted in
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widget. is not working in flutter even though variable name is right , accessing in the statefull class inside the Widget build

I have this code:

class MyWidget extends StatelessWidget {
final String text;

const MyWidget({required this.text});

@override
Widget build(BuildContext context) {
return Text(widget.text); // Accessing `text` using the `widget` keyword
}

this is my simple my code, but widget.text is causing an error:

Undefined name 'widget'. Try correcting the name to one that is defined, or defining the name. widget.
Tags:

2

Answers


  1. 0

    You have it wrong: you need to use the this keyword instead of widget since your in the class instance.

    Instead of

    return Text(widget.text);

    Use:

    return Text(this.text);

    You would use widget. when you are working within the State class of a StatefulWidget and you need to access the properties of the widget in the corresponding StatefulWidget class.

    This is an example of when you would use widget.:

    class MyWidget extends StatefulWidget {
  final String text;
  
  const MyWidget({required this.text});
  
  @override
  _MyWidgetState createState() => _MyWidgetState();
}

class _MyWidgetState extends State<MyWidget> {
  @override
  Widget build(BuildContext context) {
    return Text(widget.text);
  }
}
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  2. 0

    There is no need to utilize widget.text or this.text since this is a stateless widget.

    class MyWidget extends StatelessWidget {
final String text;

const MyWidget({required this.text});

@override
Widget build(BuildContext context) {
return Text(text);
}
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