Single card is not single - flutter

Question

I'm trying to make posts like on Twitter, where every post is a single separated item, but they all go like big single card, without separating. I'm kinda new with Flutter and bad at explanations, but I hope u got it.
#override
Widget build(BuildContext context) {
return Scaffold(
floatingActionButton: FloatingActionButton(
onPressed: _writePost,
tooltip: 'Increment',
child: Icon(Icons.create, color: Colors.grey[300]),
),
body: SizedBox(
height: 500,
child:
StreamBuilder<List<Post>>(
initialData: const [],
stream: _socketStream.stream,
builder: (context, snapshot) {
if (_isLoading) {
return const Center(
child: CircularProgressIndicator(),
);
}
return Card(child: ListView(
scrollDirection: Axis.vertical,
shrinkWrap: true,
children: [
...snapshot.data!.map<Widget>(
(post) => Padding(
key: ValueKey(post.id),
padding: const EdgeInsets.symmetric(vertical: 10),
child: ListTile(
title: Text(
post.content,
style: const TextStyle(fontSize: 20),
),
trailing: MaterialButton(
onPressed: () {
_deletePost(post.id);
},
child: const Icon(
Icons.delete,
size: 30,
),
),
),
),
)
],
) );
},
),
));
}
Example of how it looks:
I'm tried to find error with documentation, but...
Write if u need some more code or explanations.
Please help me if you can <3

Answer 1

You need to add each of the mapped item of your data with Card instead of your parent ListView. Something like this:
return ListView(
scrollDirection: Axis.vertical,
shrinkWrap: true,
children: [
...snapshot.data!.map<Widget>(
(post) => Padding(
key: ValueKey(post.id),
padding: const EdgeInsets.symmetric(vertical: 10),
child:
// Use card here.
Card(child: ListTile(
title: Text(
post.content,
style: const TextStyle(fontSize: 20),
),
trailing: MaterialButton(
onPressed: () {
_deletePost(post.id);
},
child: const Icon(
Icons.delete,
size: 30,
),
),
),
),
),
)
],
);

Answer 2

You can try ListView.separated

Answer 3

Try:
List.generate(lentgh, (index) {
return Text("$index"); // custom widget
}),