Flutter - How to update single item in pagination list - flutter

Question

https://github.com/vedartm/pagination_view
I use the above library for pagination in a flutter.
I want to update single item on tap on heart sign.(without refreshing all items.)
I used paginatio_view library it's work perfect. but i want change pericualr item on tap on heart icon without refresh all list.
https://i.stack.imgur.com/BVof0.png
Expanded(
flex: 1,
child: Padding(
padding: const EdgeInsets.all(5.0),
child: PaginationView < ProductList > (
key: key,
paginationViewType: PaginationViewType.gridView,
scrollDirection: Axis.vertical,
pageFetch: (page) => pageFetch(page),
pullToRefresh: true,
itemBuilder:
(BuildContext context, ProductList user, int index) {
return GridTile(
child: Card(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(15.0),
),
child: Column(
children: [
Align(
alignment: Alignment.topRight,
child: Padding(
padding: const EdgeInsets.all(8.0),
child: InkWell(
onTap: () => {
controller.addToWishList({
"ProductId": user.productId
}),
key
},
child: Image.asset(
height: 20,
width: 20,
user.flag ?
"assets/images/ic_like_heart.png" :
"assets/images/ic_unlike_heart.png")),
),
),
Expanded(
flex: 1,
child: CachedNetworkImage(
imageUrl: user.image,
imageBuilder: (context, imageProvider) =>
Container(
decoration: BoxDecoration(
image: DecorationImage(
image: imageProvider,
fit: BoxFit.contain,
),
),
),
progressIndicatorBuilder:
(context, url, progress) => Center(
child: CircularProgressIndicator(
value: progress.progress,
),
),
errorWidget: (context, url, error) =>
const Icon(Icons.warning_amber_rounded),
),
),
Padding(
padding: const EdgeInsets.all(8.0),
child: Text(user.productName),
)
],
),
),
);
},
onError: (dynamic error) =>
const Center(
child: Text(
'Some error occurred',
style: TextStyle(fontSize: 18),
),
),
onEmpty: const Center(
child: Text(
'Sorry! This is empty',
style: TextStyle(fontSize: 18),
),
),
bottomLoader: const Center( // optional
child: CircularProgressIndicator(),
),
initialLoader: const Padding(
padding: EdgeInsets.all(8.0),
child: Center(
child: CircularProgressIndicator(
backgroundColor: Colors.transparent),
),
),
),
),
)
Here is the method to get list.
Future < List < ProductList >> pageFetch(int offset) async {
page = (offset / 10).round() + 1;
_logger.d("Offset number::$offset Page number::$page");
var data = {
'Category': '',
'Search': _search,
'PageNumber': page,
'PageCount': 10
};
return await controller.getProductsList(data, page);
}