Flutter - How to make PageView & ListView? - dart

Question

I'm trying to make a Carousel using PageView, PageController and ListView from this Horizontally scrollable cards with Snap effect in flutter. But it throwed this exception...
══╡ EXCEPTION CAUGHT BY RENDERING LIBRARY ╞═════════════════════════════════════════════════════════
I/flutter (17678): The following assertion was thrown during performResize():
I/flutter (17678): Horizontal viewport was given unbounded height.
I/flutter (17678): Viewports expand in the cross axis to fill their container and constrain their children to match
I/flutter (17678): their extent in the cross axis. In this case, a horizontal viewport was given an unlimited amount of
I/flutter (17678): vertical space in which to expand.
Can someone help me to fix it?
I want to add this Carousel inside of Stack-filled with background image, transform class, and fade transition.
#override
void initState() {
super.initState();
controller = PageController(
initialPage: 0,
keepPage: true,
);
#override
Widget build(BuildContext context) {
return AnimatedBuilder(
builder: (BuildContext context, Widget child) {
return Scaffold(
//BODY
body: ListView(children: <Widget>[
new Stack(
children: <Widget>[
new AspectRatio(...),
new Transform(...),
//THIS IS
new ListView.builder(
itemCount: 3,
scrollDirection: Axis.horizontal,
padding: EdgeInsets.symmetric(vertical: 16.0),
itemBuilder: (BuildContext context, int index) {
if (index % 3 == 0) {
return _buildCarousel(context, index ~/ 3);
} else {
return Divider();
}
},
),
}
}
}
Widget _buildCarousel(BuildContext context, int carouselIndex) {
return Column(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
Text('Carousel $carouselIndex'),
SizedBox(
// you may want to use an aspect ratio here for tablet support
height: 200.0,
child: PageView.builder(
// store this controller in a State to save the carousel scroll position
controller: PageController(viewportFraction: 0.8),
itemBuilder: (BuildContext context, int itemIndex) {
return _buildCarouselItem(context, carouselIndex, itemIndex);
},
),
)
],
);
Widget _buildCarouselItem(
BuildContext context, int carouselIndex, int itemIndex) {
return Padding(
padding: EdgeInsets.symmetric(horizontal: 4.0),
child: Container(
decoration: BoxDecoration(
color: Colors.grey,
borderRadius: BorderRadius.all(Radius.circular(4.0)),
),
),
);
This is the full code https://pastebin.com/xXRkaWuR

Answer 1

As you might have guessed from the error, basically it means since you haven't specified a finite height,ListView is getting infinite height.
Try using shrinkWrap: true inside your ListView.builder and ListView.
Or alternatively you can also try wrapping your ListViews in a Container or SizedBox of finite height.
Example-
Container(
height: 200.0,
child: ListView(
/*Remaining Code*/
),
)
You can try doing the same with ListView.builder