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list_screen.dart
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import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:list/screens/add_new_item_screen.dart';
import 'package:firebase_auth/firebase_auth.dart';
import 'package:cloud_firestore/cloud_firestore.dart';
final _firestore = Firestore.instance;
FirebaseUser loggedinUser;
Future<void> _fetchdata;
FirebaseAuth _auth = FirebaseAuth.instance;
class MainPage extends StatefulWidget {
@override
_MainPageState createState() => _MainPageState();
}
class _MainPageState extends State<MainPage> {
void initState() {
super.initState();
_fetchdata = getCurrentUser();
}
Future<void> getCurrentUser() async {
try {
final user = await _auth.currentUser();
if (user != null) {
loggedinUser = user;
// print(loggedinUser.email);
}
} catch (e) {
print(e);
}
}
@override
Widget build(BuildContext context) {
return Scaffold(
floatingActionButton: FloatingActionButton(
onPressed: () {
Navigator.push(
context, MaterialPageRoute(builder: (context) => Addnewitem()));
},
child: Icon(Icons.add),
),
appBar: AppBar(
leading: Container(),
title: Text("Shopping List"),
actions: <Widget>[
IconButton(
icon: Icon(Icons.close),
onPressed: () {
// messagesStream();
_auth.signOut();
Navigator.pop(context);
})
],
),
body: SafeArea(
child: MessagesStream(),
),
);
}
}
class MessagesStream extends StatelessWidget {
@override
Widget build(BuildContext context) {
return FutureBuilder(
future: _fetchdata,
builder: (context, myFuture) {
if (myFuture.connectionState == ConnectionState.done &&
!myFuture.hasError) {
return StreamBuilder<QuerySnapshot>(
stream: _firestore
.collection('users')
.document(loggedinUser.uid)
.collection('items')
.snapshots(),
builder: (context, snapshot) {
if (!snapshot.hasData ||
snapshot.hasError ||
snapshot.data == null ||
snapshot.connectionState == ConnectionState.waiting ||
loggedinUser.email == null) {
return (Center(
child: CircularProgressIndicator(
backgroundColor: Colors.blue)));
}
final items = snapshot.data.documents.reversed;
List<MessageBubble> messageBubbles = [];
for (var message in items) {
final item = message.data['item'];
final sender = message.data['email'];
final quant = message.data['quant'];
// final currentUser = loggedinUser.email;
final messageBubble = MessageBubble(
text: item,
quant: quant,
documentReference: message.reference,
);
messageBubbles.add(messageBubble);
}
return ListView(
// reverse: true,
padding: EdgeInsets.symmetric(horizontal: 10, vertical: 10),
children: messageBubbles,
);
},
);
} else {
return CupertinoActivityIndicator();
}
},
);
}
}
class MessageBubble extends StatelessWidget {
MessageBubble({this.text, this.quant, this.documentReference});
final String text;
final String quant;
final DocumentReference documentReference;
@override
Widget build(BuildContext context) {
return Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: <Widget>[
Padding(
padding: const EdgeInsets.all(8.0),
child: Container(
color: Colors.tealAccent,
child: FlatButton(
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
Text(
text,
style: TextStyle(color: Colors.black, fontSize: 20),
),
Text(quant,
style: TextStyle(color: Colors.black, fontSize: 20))
],
),
onPressed: () {
documentReference.delete();
},
),
),
)
],
);
}
}