Timeline Posts are not being displayed - flutter

Question

My timeline page is not displaying any posts of users which I'm following. The posts are working fine on the user's profile page but not showing up on timeline. Here is the code of my timeline, and I don't see any debug errors too, so how to identify what's wrong here? Did I miss something? However, for the new user sign up, it does show users to follow on the timeline page.
import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:flutter/material.dart';
import 'package:fluttershare/models/user.dart';
import 'package:fluttershare/pages/home.dart';
import 'package:fluttershare/pages/search.dart';
import 'package:fluttershare/widgets/header.dart';
import 'package:fluttershare/widgets/post.dart';
import 'package:fluttershare/widgets/progress.dart';
class Timeline extends StatefulWidget {
final User currentUser;
Timeline({this.currentUser});
#override
_TimelineState createState() => _TimelineState();
}
class _TimelineState extends State<Timeline> {
List<Post> posts;
List<String> followingList = [];
#override
void initState() {
super.initState();
getTimeline();
getFollowing();
}
getTimeline() async {
QuerySnapshot snapshot = await timelineRef
.document(widget.currentUser.id)
.collection('timelinePosts')
.orderBy('timestamp', descending: true)
.getDocuments();
List<Post> posts =
snapshot.documents.map((doc) => Post.fromDocument(doc)).toList();
setState(() {
this.posts = posts;
});
}
getFollowing() async {
QuerySnapshot snapshot = await followingRef
.document(currentUser.id)
.collection('userFollowing')
.getDocuments();
setState(() {
followingList = snapshot.documents.map((doc) => doc.documentID).toList();
});
}
buildTimeline() {
if (posts == null) {
return circularProgress();
} else if (posts.isEmpty) {
return buildUsersToFollow();
} else {
return ListView(children: posts);
}
}
buildUsersToFollow() {
return StreamBuilder(
stream:
usersRef.orderBy('timestamp', descending: true).limit(30).snapshots(),
builder: (context, snapshot) {
if (!snapshot.hasData) {
return circularProgress();
}
List<UserResult> userResults = [];
snapshot.data.documents.forEach((doc) {
User user = User.fromDocument(doc);
final bool isAuthUser = currentUser.id == user.id;
final bool isFollowingUser = followingList.contains(user.id);
if (isAuthUser) {
return;
} else if (isFollowingUser) {
return;
} else {
UserResult userResult = UserResult(user);
userResults.add(userResult);
}
});
return Container(
color: Theme.of(context).accentColor.withOpacity(0.2),
child: Column(
children: <Widget>[
Container(
padding: EdgeInsets.all(12.0),
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Icon(
Icons.person_add,
color: Theme.of(context).primaryColor,
size: 30.0,
),
SizedBox(
width: 8.0,
),
Text(
"Users to Follow",
style: TextStyle(
color: Theme.of(context).primaryColor,
fontSize: 30.0,
),
),
],
),
),
Column(children: userResults),
],
),
);
},
);
}
#override
Widget build(context) {
return Scaffold(
appBar: header(context, isAppTitle: true),
body: RefreshIndicator(
onRefresh: () => getTimeline(),
child: buildTimeline(),
),
);
}
}

Answer 1

Update your code
buildTimeline() {
if (posts == null) {
return circularProgress();
} else if (posts.isEmpty) {
return buildUsersToFollow();
} else {
return ListView.builder(
itemCount: posts.length,
itemBuilder: (BuildContext ctxt, int index) {
return Text(posts[index].toString);
});
}
}

Answer 2

ListView takes Widgets as a children. posts is not a widgets of any kind.