flutter: how to scroll listview inside listview using a button - flutter

Question

i have nested Listview.Builder inside my FutureBuilder one is scroll horizontally and one in vertically what i want is when i click on a button i want to scroll my horizontal listview i passed a ScrollController to horizontal listview but when i press the arrow all of horizontal listview scroll not of the index.
How Can i achieve that...
here i my code...
Expanded(
child: Padding(
padding: const EdgeInsets.only(left: 30, right: 10),
child: FutureBuilder<List<Catagory>>(
future: categoryList,
builder: (context, snapshot) {
if (snapshot.hasData) {
List<Catagory> model = snapshot.data!;
return ListView.builder(
itemCount: model.length,
itemBuilder: (context, index) {
List<Product> product =
model[index].products;
List<bool> scroll=List.generate(model.length, (index) => false);
return Column(
children: [
Row(
children: [
SizedBox(width: width * 0.5,
child: Text(model[index].name,
overflow: TextOverflow.fade,
maxLines: 1,
softWrap: false,
style: const TextStyle(
color: Colors.red,
fontSize: 16,
)),
),
SizedBox(width: 30),
Expanded(
child: Container(
height: 1,
color: Colors.grey,
)),
SizedBox(width: 40),
],
),
SizedBox(
height: 10,
),
Row(
children: [
Expanded(
child: Container(
width: width,
height: 140,
child: ListView.builder(
controller: _controller ,
scrollDirection: Axis.horizontal,
itemCount: model[index].products.length,
itemBuilder: (BuildContext context, int index) {
return Container(
width: 80,
height: 130,
padding: EdgeInsets.only(right: 5),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
mainAxisSize: MainAxisSize.min,
children: [
Container(
width: 70,
height: 70,
decoration: BoxDecoration(
borderRadius:
BorderRadius.circular(5),
color: primaryColor),
child: CachedNetworkImage(
imageUrl: product[index].img,
placeholder: (context, url) => const Center(
child: SizedBox(
width: 25,
height: 25,
child: CircularProgressIndicator())),
imageBuilder: (context, imageProvider) =>
Container(
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(5),
image: DecorationImage(
image: imageProvider,
fit: BoxFit.cover),
),
),
errorWidget: (context, url, error) => Icon(Icons.error),
),
),
const SizedBox(height: 3,),
Text(product[index].name,
overflow: TextOverflow.fade,
maxLines: 1,
softWrap: false,
),
const SizedBox(height: 2,),
MyText(title: (product[index].salePrice != '') &&
(double.parse(product[index].salePrice) <
double.parse(product[index].regularPrice))
? product[index].salePrice
: product[index].regularPrice,
textColor: Colors.black54,
),
const SizedBox(height: 3,),
MyTextButton(
width: 55,
height: 24,
title: 'Añadir',
fontSize: 8,
textColor: Colors.white,
backgroundColor: primaryColor,
cornerRadius: 5,
onPress: () {
Navigator.push(context, MaterialPageRoute(builder: (context) =>
ProductType(product: product[index])));
})
],
),
);
}))),
InkWell(
onTap: () {
_animateToIndex(5);
// here when i press this i want to make horizontal list of specific index to scroll
},
child: Container(
height: 140,
width: 40,
child: Icon(
Icons.arrow_forward_ios,
color: Colors.grey),
),
)
],
),
SizedBox(
height: 10,
),
],
);
});
} else if (snapshot.hasError) {
return Text("${snapshot.error}");
}
return Center(child: CircularProgressIndicator());
},
)))
My Animation Code...
final ScrollController _controller = ScrollController();
final double _height = 100.0;
void _animateToIndex(int index) {
_controller.animateTo(
index * _height,
duration: Duration(seconds: 5),
curve: Curves.fastOutSlowIn,
);
}
i'm new to flutter i research too much but i didn't found any solution i have to submit this project please help me as soon as possible thanks in advance...