Why every time I add a ListView to my Column all widgets disappear? - flutter

Question

I'm making a Flutter Web App and I have something like this
class _HomeViewState extends State<HomeView> {
#override
Widget build(BuildContext context) {
var posts = Provider.of<List<Post>>(context);
List<int> l =[1,2,3,4];
return Scaffold(
backgroundColor: Colors.white,
appBar: TheAppBaar,
body: SingleChildScrollView(
scrollDirection: Axis.vertical,
child: Container(child: Padding(
padding: EdgeInsets.all(20.0),
child: Column(
children: [
CreatePost(connUserUid: widget.user.uid, connUserImage:
userFetched.get('profileImage').toString(),
connUserFullname: userFetched.get('fullName').toString(),),
SizedBox(height: 10,),
ListView.separated(itemBuilder: (BuildContext context, int
index) {
return Container(
height: 150,
child: Text('${l[index]}'),
);
},
separatorBuilder:
(BuildContext context, int index) => Divider(),
itemCount: l.length)
],
),
),
),
),
);
}
}
Every time I want to display a ListView with those posts fetched or anything, the method Create Post and that Sized Box disappear and the list is not displayed either.
#override
Widget build(BuildContext context) {
return Align(
alignment: Alignment.center,
child: Container(
width: 400,
decoration: BoxDecoration(
color: Colors.white,
borderRadius: BorderRadius.all(Radius.circular(10)),
boxShadow: [BoxShadow(
color:kPrimaryColor.withOpacity(0.2),
spreadRadius: 2,
blurRadius: 3,
offset: Offset(0,3)
)]
),
child: Padding(
padding: EdgeInsets.all(20),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Align(
alignment: Alignment.center,
child: Container(
height: 50,
child: Image.network(widget.connUserImage),
),
),
Align(
alignment: Alignment.center,
child: Container(width: 30,child: Divider(
color: kPrimaryColor,
thickness: 2,
),),
),
SizedBox(height: 8,),
TextField(
maxLines: 5,
decoration: InputDecoration(
errorText: errorTextMessage,
border: OutlineInputBorder(
borderSide: BorderSide(color: kPrimaryColor)
),
labelText: 'Yadda, Yadda, Yadda...'
),
onChanged: (String value) {
setState(() {
postDescription = value;
errorTextMessage = null;
spinner = false;
});
},
),
SizedBox(height: 12,),
Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: [
Row(
children: [
IconButton(
icon: Icon(Icons.add_a_photo_rounded, color: Color
(0xFFE53E00),
size:
25,),
onPressed: () {
imagePicker();
},
),
SingleChildScrollView(
scrollDirection: Axis.horizontal,
child: imageInfo == null ? Container() : Text(imageInfo.fileName),
)
],
),
Icon(Icons.pin_drop_rounded, color: Color(0xFF0077e5),
size:
25,),
Icon(Icons.map_rounded, color: Color(0xFF26c118),
size: 25,),
spinner? Padding(
padding: EdgeInsets.all(15.0),
child: CircularProgressIndicator(backgroundColor: kPrimaryColor,),
) :
IconButton(icon:
Icon(Icons
.arrow_forward_ios_outlined,
color:
kPrimaryColor,size: 25,), onPressed: () {
},),
],
)
],
),
),
),
);
}
This is the CreatePost method, just a " card ",
If I make a ListView all disappear, but if in my Column from the first code, I add 1 PostView by 1, they are displayed. I don't understand what's wrong. Should I remove those Align or I don't know. In my console I do not have any errors.
Thank you in advance!