How to control widget after listview in stack - flutter

Question

I build a flutter app with ads as a carousel slider as a bottom layer of the stack widget, and I have I list view in the top layer of the stack widget
and when the list is scrolled vertically it overlays the ads on the screen.
now I have a problem with the carousel slider, I can't scroll it manually and I can't click any
how to solve it?
demo code:
Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: Stack(
children: [
CarouselSlider(
options: CarouselOptions(
autoPlay: true,
),
items: imgList
.map((item) => Center(
child: Image.network(
item,
fit: BoxFit.cover,
)))
.toList(),
),
ListView.builder(
shrinkWrap: true,
padding: const EdgeInsets.only(top: 210),
itemBuilder: (context, index) => Container(
color: Colors.white,
child: Text(
'ITEM $index',
textAlign: TextAlign.center,
),
))
],
));

Answer 1

It depends on how you want to lay your widgets out.
If you want to keep the ads persistent (not to scroll away with list) then keep the layout like :
Scaffold(
body: Column(
children: [
CarouselSlider(),
Expanded(
child: ListView.builder(),
),
],
),
)

Answer 2

Using positioned widget inside stack you can easily position the widgets.
Maybe this will help you.
Stack(
children: [
Positioned(
top: 0,
bottom: 250,
left: 0,
right: 0,
child: ListView.builder(
shrinkWrap: true,
itemBuilder: (context, index) => Container(
color: Colors.white,
child: Text(
'ITEM $index',
textAlign: TextAlign.center,
),
)),
),
Positioned(
bottom: 8,
right: 0,
left: 0,
child: Padding(
padding: const EdgeInsets.all(8.0),
child: CarouselSlider(
items: imgList.map((i) {
return Builder(
builder: (BuildContext context) {
return Container(
width: MediaQuery.of(context).size.width,
margin: const EdgeInsets.symmetric(horizontal: 5.0),
decoration: const BoxDecoration(color: Colors.amber),
child: GestureDetector(
child: Image.network(i, fit: BoxFit.fill),
onTap: () {
print("hey");
}));
},
);
}).toList(),
options: CarouselOptions(),
)),
),
],
)