How to fix the key class error in flutter by calling it in parent class-CodePudding

First I created extracted class of the re-usable card which was repeated in my code.

Here I am trying to use the key in different places where it throw no such error but here below in the code it shows this error.

class ReusableCard extends StatelessWidget {
  const ReusableCard({super.key, required this.colour})

  final Color colour;
  @override
  Widget build(BuildContext context) {
    return Container(
      margin: const EdgeInsets.all(15.0),
      decoration: BoxDecoration(
        color: colour,
        borderRadius: BorderRadius.circular(10.0),
      ),
    );
  }
}

How to this error can be solved.

CodePudding user response：

It is missing end ; on constructor like

class ReusableCard extends StatelessWidget {
  const ReusableCard({super.key, required this.colour}); //here ;

CodePudding user response：

Try the following code:

class ReusableCard extends StatelessWidget {
  const ReusableCard({super.key, required this.colour});

  final Color colour;

  @override
  Widget build(BuildContext context) {
    return Container(
      margin: const EdgeInsets.all(15.0),
      decoration: BoxDecoration(
        color: colour,
        borderRadius: BorderRadius.circular(10.0),
      ),
    );
  }
}