Flutter 颤振-如何获取快照的索引值?
我想获取颤振列表视图中的所有文档。。所以我做这个Flutter 颤振-如何获取快照的索引值?,flutter,google-cloud-firestore,document,Flutter,Google Cloud Firestore,Document,我想获取颤振列表视图中的所有文档。。所以我做这个 class AudioScreenList extends StatefulWidget { @override _AudioScreenListState createState() => _AudioScreenListState(); } class _AudioScreenListState extends State<AudioScreenList> { bool isPerformingRequest
class AudioScreenList extends StatefulWidget {
@override
_AudioScreenListState createState() => _AudioScreenListState();
}
class _AudioScreenListState extends State<AudioScreenList> {
bool isPerformingRequest = false;
static const String _collectionRussian = 'users';
static const String _loadingTextRussian = 'Loading...';
static const String _speechTitle = 'full_name';
static const String _speechSubtitle = 'coins';
static const String _audioLink = 'audioLink';
static const String _pastorCode = 'pastorCode';
static const String _pastorName = 'coins';
static const String _id = "id";
@override
Widget build(BuildContext context) {
return Scaffold(
body: StreamBuilder(
stream: FirebaseFirestore.instance
.collection(_collectionRussian)
// .orderBy(_id, descending: true)
.snapshots(),
builder: (context, AsyncSnapshot<QuerySnapshot> snapshot) {
if (!snapshot.hasData)
return const Center(
child: Text(
_loadingTextRussian,
style: TextStyle(fontSize: 25.0, color: Colors.grey),
));
return ListView(children: getExpenseItems(snapshot));
},
),
);
}
getExpenseItems(AsyncSnapshot<QuerySnapshot> snapshot) {
// ignore: deprecated_member_use
return snapshot.data.documents
.map(
(doc) => Container(
margin: const EdgeInsets.fromLTRB(0.0, 8.0, 0.0, 0.0),
child: ListTile(
leading: Container(
width: 70.0,
height: 70.0,
child: Image.asset(
"assets/profile.png",
fit: BoxFit.cover,
),
),
title: Text(doc[_speechTitle]),
subtitle: Text(
doc[_speechSubtitle].toString(),
),
onTap: () => {}),
),
)
.toList();
}
}
class AudioScreenList扩展了StatefulWidget{
@凌驾
_AudioScreenListState createState()=>_AudioScreenListState();
}
类_AudioScreenListState扩展状态
我试过了,但没用
snapshot.data.doc['index']
我想在单击列表项时获取文档id。您提出了两个不同的问题。您问题的标题是关于在map()
函数中确定每个文档的索引,您可以在此处找到答案:
另一个问题是关于查找每个文档的ID,您可以在循环中使用doc.ID
。例如:
return snapshot.data.documents
.map(
(doc) => Container(
margin: const EdgeInsets.fromLTRB(0.0, 8.0, 0.0, 0.0),
child: ListTile(
...,
onTap: () => { print(doc.id) }),
),