Migrate Flutter app: realtime db to firestore
1
I am migrate flutter app from Firebase realtime database to firestore. I have trouble with update this code in chat app because firestore no have FirebaseAnimatedList.
Old code:
Widget build(BuildContext context) {
return new Scaffold(
appBar: new AppBar(
title: new Text(“chat“),
),
body: new Container(
child: new Column(
children: <Widget>[
new Flexible(
child: new FirebaseAnimatedList(
query: reference,
sort: (a, b) => b.key.compareTo(a.key),
padding: new EdgeInsets.all(8.0),
reverse: true,
itemBuilder: (_, DataSnapshot snapshot,
Animation<double> animation, int x) {
return new ChatMessage(
snapshot: snapshot, animation: animation);
},
),
),
New code (but give me errors):
Widget build(BuildContext context) {
return new Scaffold(
appBar: new AppBar(
title: new Text(“chat"),
),
body: new Container(
child: new Column(
children: <Widget>[
new Flexible(
child: new StreamBuilder<QuerySnapshot>(
stream: reference.snapshots(),
builder: (BuildContext context, AsyncSnapshot<QuerySnapshot> snapshot) {
return snapshot.hasData? new ListView(
physics: const AlwaysScrollableScrollPhysics(),
reverse: true,
padding: new EdgeInsets.all(8.0),
children: snapshot.data.documents.map(DocumentSnapshot snapshot) {
return new ChatMessage(
snapshot: snapshot,
animation: animation,
);
})
),
reference:
final reference = Firestore.instance.collection('messages');
Any help?
I have look up:
Firestore StreamBuilder with nested AnimatedList
How to bind a Firestore documents list to a Dropdown menu in Flutter?
How to listen for document changes in Cloud Firestore using Flutter?
Update:
Thanks everyone for response! I make some changes.
New code:
child: new StreamBuilder<QuerySnapshot>(
stream: reference.snapshots(),
builder: (BuildContext context, AsyncSnapshot<QuerySnapshot> snapshot) {
if (!snapshot.hasData) return new Text('loading...');
return new ListView(
children: snapshot.data.documents.map((DocumentSnapshot snapshot) {
return new ChatMessage(
snapshot: snapshot,
animation: animation,
);
}).toList(),
);
}
),
),
Now only error is in animation. I have error: undefined name 'animation'
firebase dart
flutter google-cloud-firestore asked Nov 16 '18 at 16:05
FlutterFirebaseFlutterFirebase
366
add a comment |
1
I am migrate flutter app from Firebase realtime database to firestore. I have trouble with update this code in chat app because firestore no have FirebaseAnimatedList.
Old code:
Widget build(BuildContext context) {
return new Scaffold(
appBar: new AppBar(
title: new Text(“chat“),
),
body: new Container(
child: new Column(
children: <Widget>[
new Flexible(
child: new FirebaseAnimatedList(
query: reference,
sort: (a, b) => b.key.compareTo(a.key),
padding: new EdgeInsets.all(8.0),
reverse: true,
itemBuilder: (_, DataSnapshot snapshot,
Animation<double> animation, int x) {
return new ChatMessage(
snapshot: snapshot, animation: animation);
},
),
),
New code (but give me errors):
Widget build(BuildContext context) {
return new Scaffold(
appBar: new AppBar(
title: new Text(“chat"),
),
body: new Container(
child: new Column(
children: <Widget>[
new Flexible(
child: new StreamBuilder<QuerySnapshot>(
stream: reference.snapshots(),
builder: (BuildContext context, AsyncSnapshot<QuerySnapshot> snapshot) {
return snapshot.hasData? new ListView(
physics: const AlwaysScrollableScrollPhysics(),
reverse: true,
padding: new EdgeInsets.all(8.0),
children: snapshot.data.documents.map(DocumentSnapshot snapshot) {
return new ChatMessage(
snapshot: snapshot,
animation: animation,
);
})
),
reference:
final reference = Firestore.instance.collection('messages');
Any help?
I have look up:
Firestore StreamBuilder with nested AnimatedList
How to bind a Firestore documents list to a Dropdown menu in Flutter?
How to listen for document changes in Cloud Firestore using Flutter?
Update:
Thanks everyone for response! I make some changes.
New code:
child: new StreamBuilder<QuerySnapshot>(
stream: reference.snapshots(),
builder: (BuildContext context, AsyncSnapshot<QuerySnapshot> snapshot) {
if (!snapshot.hasData) return new Text('loading...');
return new ListView(
children: snapshot.data.documents.map((DocumentSnapshot snapshot) {
return new ChatMessage(
snapshot: snapshot,
animation: animation,
);
}).toList(),
);
}
),
),
Now only error is in animation. I have error: undefined name 'animation'
firebase dart
flutter google-cloud-firestore asked Nov 16 '18 at 16:05
FlutterFirebaseFlutterFirebase
366
whats the error?
– UpaJah
Nov 17 '18 at 9:31
@UpaJah For 'snapshot.data.documents.map(DocumentSnapshot snapshot)'. Error: 'Function expressions can't be named.'
– FlutterFirebase
Nov 17 '18 at 14:16
add a comment |
1
1
1
I am migrate flutter app from Firebase realtime database to firestore. I have trouble with update this code in chat app because firestore no have FirebaseAnimatedList.
Old code:
Widget build(BuildContext context) {
return new Scaffold(
appBar: new AppBar(
title: new Text(“chat“),
),
body: new Container(
child: new Column(
children: <Widget>[
new Flexible(
child: new FirebaseAnimatedList(
query: reference,
sort: (a, b) => b.key.compareTo(a.key),
padding: new EdgeInsets.all(8.0),
reverse: true,
itemBuilder: (_, DataSnapshot snapshot,
Animation<double> animation, int x) {
return new ChatMessage(
snapshot: snapshot, animation: animation);
},
),
),
New code (but give me errors):
Widget build(BuildContext context) {
return new Scaffold(
appBar: new AppBar(
title: new Text(“chat"),
),
body: new Container(
child: new Column(
children: <Widget>[
new Flexible(
child: new StreamBuilder<QuerySnapshot>(
stream: reference.snapshots(),
builder: (BuildContext context, AsyncSnapshot<QuerySnapshot> snapshot) {
return snapshot.hasData? new ListView(
physics: const AlwaysScrollableScrollPhysics(),
reverse: true,
padding: new EdgeInsets.all(8.0),
children: snapshot.data.documents.map(DocumentSnapshot snapshot) {
return new ChatMessage(
snapshot: snapshot,
animation: animation,
);
})
),
reference:
final reference = Firestore.instance.collection('messages');
Any help?
I have look up:
Firestore StreamBuilder with nested AnimatedList
How to bind a Firestore documents list to a Dropdown menu in Flutter?
How to listen for document changes in Cloud Firestore using Flutter?
Update:
Thanks everyone for response! I make some changes.
New code:
child: new StreamBuilder<QuerySnapshot>(
stream: reference.snapshots(),
builder: (BuildContext context, AsyncSnapshot<QuerySnapshot> snapshot) {
if (!snapshot.hasData) return new Text('loading...');
return new ListView(
children: snapshot.data.documents.map((DocumentSnapshot snapshot) {
return new ChatMessage(
snapshot: snapshot,
animation: animation,
);
}).toList(),
);
}
),
),
Now only error is in animation. I have error: undefined name 'animation'
firebase dart
flutter google-cloud-firestore asked Nov 16 '18 at 16:05
FlutterFirebaseFlutterFirebase
366
I am migrate flutter app from Firebase realtime database to firestore. I have trouble with update this code in chat app because firestore no have FirebaseAnimatedList.
Old code:
Widget build(BuildContext context) {
return new Scaffold(
appBar: new AppBar(
title: new Text(“chat“),
),
body: new Container(
child: new Column(
children: <Widget>[
new Flexible(
child: new FirebaseAnimatedList(
query: reference,
sort: (a, b) => b.key.compareTo(a.key),
padding: new EdgeInsets.all(8.0),
reverse: true,
itemBuilder: (_, DataSnapshot snapshot,
Animation<double> animation, int x) {
return new ChatMessage(
snapshot: snapshot, animation: animation);
},
),
),
New code (but give me errors):
Widget build(BuildContext context) {
return new Scaffold(
appBar: new AppBar(
title: new Text(“chat"),
),
body: new Container(
child: new Column(
children: <Widget>[
new Flexible(
child: new StreamBuilder<QuerySnapshot>(
stream: reference.snapshots(),
builder: (BuildContext context, AsyncSnapshot<QuerySnapshot> snapshot) {
return snapshot.hasData? new ListView(
physics: const AlwaysScrollableScrollPhysics(),
reverse: true,
padding: new EdgeInsets.all(8.0),
children: snapshot.data.documents.map(DocumentSnapshot snapshot) {
return new ChatMessage(
snapshot: snapshot,
animation: animation,
);
})
),
reference:
final reference = Firestore.instance.collection('messages');
Any help?
I have look up:
Firestore StreamBuilder with nested AnimatedList
How to bind a Firestore documents list to a Dropdown menu in Flutter?
How to listen for document changes in Cloud Firestore using Flutter?
Update:
Thanks everyone for response! I make some changes.
New code:
child: new StreamBuilder<QuerySnapshot>(
stream: reference.snapshots(),
builder: (BuildContext context, AsyncSnapshot<QuerySnapshot> snapshot) {
if (!snapshot.hasData) return new Text('loading...');
return new ListView(
children: snapshot.data.documents.map((DocumentSnapshot snapshot) {
return new ChatMessage(
snapshot: snapshot,
animation: animation,
);
}).toList(),
);
}
),
),
Now only error is in animation. I have error: undefined name 'animation'
firebase dart
flutter google-cloud-firestore firebase dart
flutter google-cloud-firestore asked Nov 16 '18 at 16:05
FlutterFirebaseFlutterFirebase
366
asked Nov 16 '18 at 16:05
FlutterFirebaseFlutterFirebase
366
edited Nov 18 '18 at 21:17
FlutterFirebase
asked Nov 16 '18 at 16:05
FlutterFirebaseFlutterFirebase
366
asked Nov 16 '18 at 16:05
FlutterFirebaseFlutterFirebase
366
asked Nov 16 '18 at 16:05
FlutterFirebaseFlutterFirebase
366
366
whats the error?
– UpaJah
Nov 17 '18 at 9:31
@UpaJah For 'snapshot.data.documents.map(DocumentSnapshot snapshot)'. Error: 'Function expressions can't be named.'
– FlutterFirebase
Nov 17 '18 at 14:16
add a comment |
whats the error?
– UpaJah
Nov 17 '18 at 9:31
@UpaJah For 'snapshot.data.documents.map(DocumentSnapshot snapshot)'. Error: 'Function expressions can't be named.'
– FlutterFirebase
Nov 17 '18 at 14:16
whats the error?
– UpaJah
Nov 17 '18 at 9:31
whats the error?
– UpaJah
Nov 17 '18 at 9:31
@UpaJah For 'snapshot.data.documents.map(DocumentSnapshot snapshot)'. Error: 'Function expressions can't be named.'
– FlutterFirebase
Nov 17 '18 at 14:16
@UpaJah For 'snapshot.data.documents.map(DocumentSnapshot snapshot)'. Error: 'Function expressions can't be named.'
– FlutterFirebase
Nov 17 '18 at 14:16
add a comment |
2 Answers
2
active
oldest
votes
0
try using ListView.builder ..
new Flexible(
child: new StreamBuilder<QuerySnapshot>(
stream: reference.snapshots(),
builder: (BuildContext context,
AsyncSnapshot<QuerySnapshot> snapshot) {
return ListView.builder(
itemCount: snapshot.data.documents.length,
reverse: false,
shrinkWrap: true,
itemBuilder: (context, index) {
return ChatMessage(
animation, snapshot.data.documents[index], index);
});
}))
answered Nov 17 '18 at 17:04
UpaJahUpaJah
671312
Thanks for reply! I have try your code but it give many error. I have now update my code above. Now only error is where to define 'animation'.
– FlutterFirebase
Nov 18 '18 at 21:18
add a comment |
0
Missing a bracket:
children: snapshot.data.documents.map((DocumentSnapshot snapshot) {
answered Nov 17 '18 at 18:36
LucasLucas
25619
Thanks! This help, but I still have error. I have update in edit above.
– FlutterFirebase
Nov 18 '18 at 21:11
You need to define animation somewhere if you need an animation. Try and get it working without an animation first.
– Lucas
Nov 23 '18 at 22:46
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
0
try using ListView.builder ..
new Flexible(
child: new StreamBuilder<QuerySnapshot>(
stream: reference.snapshots(),
builder: (BuildContext context,
AsyncSnapshot<QuerySnapshot> snapshot) {
return ListView.builder(
itemCount: snapshot.data.documents.length,
reverse: false,
shrinkWrap: true,
itemBuilder: (context, index) {
return ChatMessage(
animation, snapshot.data.documents[index], index);
});
}))
answered Nov 17 '18 at 17:04
UpaJahUpaJah
671312
Thanks for reply! I have try your code but it give many error. I have now update my code above. Now only error is where to define 'animation'.
– FlutterFirebase
Nov 18 '18 at 21:18
add a comment |
0
try using ListView.builder ..
new Flexible(
child: new StreamBuilder<QuerySnapshot>(
stream: reference.snapshots(),
builder: (BuildContext context,
AsyncSnapshot<QuerySnapshot> snapshot) {
return ListView.builder(
itemCount: snapshot.data.documents.length,
reverse: false,
shrinkWrap: true,
itemBuilder: (context, index) {
return ChatMessage(
animation, snapshot.data.documents[index], index);
});
}))
answered Nov 17 '18 at 17:04
UpaJahUpaJah
671312
Thanks for reply! I have try your code but it give many error. I have now update my code above. Now only error is where to define 'animation'.
– FlutterFirebase
Nov 18 '18 at 21:18
add a comment |
0
0
0
try using ListView.builder ..
new Flexible(
child: new StreamBuilder<QuerySnapshot>(
stream: reference.snapshots(),
builder: (BuildContext context,
AsyncSnapshot<QuerySnapshot> snapshot) {
return ListView.builder(
itemCount: snapshot.data.documents.length,
reverse: false,
shrinkWrap: true,
itemBuilder: (context, index) {
return ChatMessage(
animation, snapshot.data.documents[index], index);
});
}))
answered Nov 17 '18 at 17:04
UpaJahUpaJah
671312
try using ListView.builder ..
new Flexible(
child: new StreamBuilder<QuerySnapshot>(
stream: reference.snapshots(),
builder: (BuildContext context,
AsyncSnapshot<QuerySnapshot> snapshot) {
return ListView.builder(
itemCount: snapshot.data.documents.length,
reverse: false,
shrinkWrap: true,
itemBuilder: (context, index) {
return ChatMessage(
animation, snapshot.data.documents[index], index);
});
}))
answered Nov 17 '18 at 17:04
UpaJahUpaJah
671312
answered Nov 17 '18 at 17:04
UpaJahUpaJah
671312
answered Nov 17 '18 at 17:04
UpaJahUpaJah
671312
answered Nov 17 '18 at 17:04
UpaJahUpaJah
671312
671312
Thanks for reply! I have try your code but it give many error. I have now update my code above. Now only error is where to define 'animation'.
– FlutterFirebase
Nov 18 '18 at 21:18
add a comment |
Thanks for reply! I have try your code but it give many error. I have now update my code above. Now only error is where to define 'animation'.
– FlutterFirebase
Nov 18 '18 at 21:18
Thanks for reply! I have try your code but it give many error. I have now update my code above. Now only error is where to define 'animation'.
– FlutterFirebase
Nov 18 '18 at 21:18
Thanks for reply! I have try your code but it give many error. I have now update my code above. Now only error is where to define 'animation'.
– FlutterFirebase
Nov 18 '18 at 21:18
add a comment |
0
Missing a bracket:
children: snapshot.data.documents.map((DocumentSnapshot snapshot) {
answered Nov 17 '18 at 18:36
LucasLucas
25619
Thanks! This help, but I still have error. I have update in edit above.
– FlutterFirebase
Nov 18 '18 at 21:11
You need to define animation somewhere if you need an animation. Try and get it working without an animation first.
– Lucas
Nov 23 '18 at 22:46
add a comment |
0
Missing a bracket:
children: snapshot.data.documents.map((DocumentSnapshot snapshot) {
answered Nov 17 '18 at 18:36
LucasLucas
25619
Thanks! This help, but I still have error. I have update in edit above.
– FlutterFirebase
Nov 18 '18 at 21:11
You need to define animation somewhere if you need an animation. Try and get it working without an animation first.
– Lucas
Nov 23 '18 at 22:46
add a comment |
0
0
0
Missing a bracket:
children: snapshot.data.documents.map((DocumentSnapshot snapshot) {
answered Nov 17 '18 at 18:36
LucasLucas
25619
Missing a bracket:
children: snapshot.data.documents.map((DocumentSnapshot snapshot) {
answered Nov 17 '18 at 18:36
LucasLucas
25619
answered Nov 17 '18 at 18:36
LucasLucas
25619
answered Nov 17 '18 at 18:36
LucasLucas
25619
answered Nov 17 '18 at 18:36
LucasLucas
25619
25619
Thanks! This help, but I still have error. I have update in edit above.
– FlutterFirebase
Nov 18 '18 at 21:11
You need to define animation somewhere if you need an animation. Try and get it working without an animation first.
– Lucas
Nov 23 '18 at 22:46
add a comment |
Thanks! This help, but I still have error. I have update in edit above.
– FlutterFirebase
Nov 18 '18 at 21:11
You need to define animation somewhere if you need an animation. Try and get it working without an animation first.
– Lucas
Nov 23 '18 at 22:46
Thanks! This help, but I still have error. I have update in edit above.
– FlutterFirebase
Nov 18 '18 at 21:11
Thanks! This help, but I still have error. I have update in edit above.
– FlutterFirebase
Nov 18 '18 at 21:11
You need to define animation somewhere if you need an animation. Try and get it working without an animation first.
– Lucas
Nov 23 '18 at 22:46
You need to define animation somewhere if you need an animation. Try and get it working without an animation first.
– Lucas
Nov 23 '18 at 22:46
add a comment |
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whats the error?
– UpaJah
Nov 17 '18 at 9:31
@UpaJah For 'snapshot.data.documents.map(DocumentSnapshot snapshot)'. Error: 'Function expressions can't be named.'
– FlutterFirebase
Nov 17 '18 at 14:16