flutter gridview card height
class MyGridView extends StatefulWidget {
@override
_MyGridViewState createState() => _MyGridViewState();
}
class _MyGridViewState extends State<MyGridView> {
// set an int with value -1 since no card has been selected
int selectedCard = -1;
@override
Widget build(BuildContext context) {
return GridView.builder(
shrinkWrap: false,
scrollDirection: Axis.vertical,
itemCount: 10,
gridDelegate: new SliverGridDelegateWithFixedCrossAxisCount(
crossAxisCount: 2,
childAspectRatio: MediaQuery.of(context).size.width /
(MediaQuery.of(context).size.height / 3),
),
itemBuilder: (BuildContext context, int index) {
return GestureDetector(
onTap: () {
setState(() {
// ontap of each card, set the defined int to the grid view index
selectedCard = index;
});
},
child: Card(
// check if the index is equal to the selected Card integer
color: selectedCard == index ? Colors.blue : Colors.amber,
child: Container(
height: 200,
width: 200,
child: Center(
child: Text(
'$index',
style: TextStyle(
fontSize: 20,
color: Colors.white,
fontWeight: FontWeight.w500,
),
),
),
),
),
);
});
}
}