How can I use methods to replace duplicate flutter code?-CodePudding

I've created a program where I display 6 boxes (3 rows, 2 boxes on each row). This leads to alot of duplicate code that could (in normal Java) easily be refactored to a method instead where I send the index for each item.

It would have been nice to have a void method that's called with the index for foodItems and then creates everything. Or how should I do it?

Below is code for only one row, which basically looks the same for all rows except different indexes for the foodItem list.

Row(
    mainAxisAlignment: MainAxisAlignment.center,
    children: [
        Card(
            elevation: 10,
            shape: RoundedRectangleBorder(
              borderRadius: BorderRadius.circular(25),
            ),
            child: IconButton(
                onPressed: () {
                    setState(() {
                        buttonPressed(0);
                    });
                },
                padding: EdgeInsets.all(0.0),
                icon: (getPressedState(0)
                    ? Image.asset('assets/pressed/${foodItems[0].imageSource}Pressed.png')
                    : Image.asset('assets/notPressed/${foodItems[0].imageSource}.png')
                ),
                iconSize: 115,
            ),
        ),
        SizedBox(width: 20),
        Card(
            elevation: 10,
            shape: RoundedRectangleBorder(
                borderRadius: BorderRadius.circular(25),
            ),
            child: IconButton(
                onPressed: () {
                    setState(() {
                        buttonPressed(1);
                    });
                },
                padding: EdgeInsets.all(0.0),
                icon: (getPressedState(1)
                    ? Image.asset('assets/pressed/${foodItems[1].imageSource}Pressed.png')
                    : Image.asset('assets/notPressed/${foodItems[1].imageSource}.png')
                ),
                iconSize: 115,
            ),
        ),
    ],
),
SizedBox(height: 20),

CodePudding user response：

simple create methods in your class, outside of build method:

@override
Widget build(BuildContext context) {
  return Row(
    _card([imagePath]),
    SizedBox(width: 20),
    _card([imagePath]),
  );
}

Widget _card(String imagePath){
   return Card(
        elevation: 10,
        shape: RoundedRectangleBorder(
            borderRadius: BorderRadius.circular(25),
        ),
        child: .....
   );
}

CodePudding user response：

to avoid this duplication you should either create a method and pass the index as parameters or create a new widget in another class and pass the index also as a parameter to it