Flutter PlatformException in FutureBuilder - firebase

Question

I'm getting the below PlatformException in a FutureBuilder when running app.release.apk on an Android phone. It doesn't happen every time.
I noticed that if I have the app open and I close the phone, after opening it and visiting the first item from a ListView shows the error, sometimes following visits to other items causes the exception, sometimes not.
PlatformException(Error performing get, Failed to get document because the client is offline., null
class _ItemState extends State<Item> {
Future _itemFuture;
#override
void initState() {
setState(() {
_itemFuture = Firestore.instance
.collection('content')
.document(widget.item.documentID)
.get();
});
...
super.initState();
}
Scaffold(
body: Container(
child: FutureBuilder<DocumentSnapshot>(
future: _itemFuture,
builder:
(BuildContext context, AsyncSnapshot<DocumentSnapshot> snapshot) {
switch (snapshot.connectionState) {
case ConnectionState.none:
return Container();
case ConnectionState.waiting:
return Center(
child: CircularProgressIndicator(),
);
default:
if (snapshot.hasError) {
return Text('Error1: ${snapshot.error}');
} else {
if (snapshot.hasData) {
return _itemBody(
snapshot.data,
);
}
}
return null;
}
},
),
),
);
I am using:
cloud_firestore: ^0.13.7
firebase_auth: ^0.16.1
*** Edit
I will add the whole widget. I cleaned it, removing any other logic that I thought might cause the error. Now it's a minimal widget that makes a request to Firestore using Streambuilder. Of course with the same error.
class Item extends StatefulWidget {
Item({
Key key,
this.items,
this.showAd,
this.user,
this.item,
this.favorites,
}) : super(key: key);
final List<Imodel> items;
final bool showAd;
final UserModel user;
final item;
final List<FireFavorites> favorites;
#override
_ItemState createState() => _ItemState();
}
class _ItemState extends State<Item> {
DateTime _lastViewed;
bool _viewRequest = true;
final _adWidget = AdMobWidget();
bool _favoriteItem = false;
#override
void initState() {
super.initState();
final isFavorite = widget.favorites
.where((element) => element.id == widget.item.documentID);
if (isFavorite.length > 0) {
_favoriteItem = true;
}
}
#override
Widget build(BuildContext context) {
if (widget.showAd) {
_adWidget.showAd();
}
final _headerStyle = TextStyle(fontWeight: FontWeight.bold);
Widget _itemBody(item) {
return ListView(
children: <Widget>[
Column(
mainAxisAlignment: MainAxisAlignment.start,
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
...
],
),
],
);
}
_future() {
return FutureBuilder<DocumentSnapshot>(
future: Firestore.instance
.collection('content')
.document(widget.item.documentID)
.get(source: Source.serverAndCache),
builder:
(BuildContext context, AsyncSnapshot<DocumentSnapshot> snapshot) {
List<Widget> children;
if (snapshot.hasData) {
children = <Widget>[Expanded(child: _itemBody(snapshot.data))];
} else if (snapshot.hasError) {
children = <Widget>[
Icon(
Icons.error_outline,
color: Colors.red,
size: 60,
),
Padding(
padding: const EdgeInsets.only(top: 16),
child: Text('Error: ${snapshot.error}'),
)
];
} else {
children = <Widget>[
SizedBox(
child: CircularProgressIndicator(),
width: 60,
height: 60,
),
const Padding(
padding: EdgeInsets.only(top: 16),
child: Text('Awaiting result...'),
)
];
}
return Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.center,
children: children,
),
);
},
);
}
return Scaffold(
resizeToAvoidBottomPadding: false,
backgroundColor: Color(0xff2398C3),
appBar: AppBar(
elevation: 0,
flexibleSpace: Container(
decoration: BoxDecoration(
gradient: LinearGradient(
begin: Alignment.topCenter,
end: Alignment.bottomCenter,
colors: [Color(0xff042C5C), Color(0xff2398C3)],
),
),
),
actions: <Widget>[
BookmarkIcon(
isFav: _favoriteItem,
documentID: widget.item.documentID,
userID: widget.user.uid,
),
Padding(
padding: EdgeInsets.only(
right: 20.0,
),
child: GestureDetector(
onTap: () {},
child: Icon(
Icons.share,
size: 18.0,
),
),
),
],
),
body: Container(
width: double.infinity,
height: double.infinity,
padding: EdgeInsets.only(
top: 25.0,
left: 30.0,
right: 15.0,
),
decoration: BoxDecoration(
color: Colors.white,
borderRadius: BorderRadius.only(
topLeft: Radius.circular(32),
topRight: Radius.circular(32),
),
),
child: widget.item.documentID != null ? _future() : Container(),
),
);
}
}