Question

即时通讯未能按时间戳降序对我的数据进行排序，错误不断表明错误定位

                StreamBuilder( 
                  stream: Firestore.instance.collection("payments").orderBy("timestamp", "desc").where('participants', arrayContains: userActive).snapshots(),
                  builder: (context, snapshot){


                    
                 

                  return Container ( child:ListView.builder(
                      shrinkWrap: true,
                    itemCount: snapshot.data.documents.length,
                    padding: EdgeInsets.all(0),
                    controller: ScrollController(keepScrollOffset: false),
                    itemBuilder: (context, index){

                      DocumentSnapshot documentSnapshot = snapshot.data.documents[index].data();

Answer 1

您应该使用以下内容：

orderBy("timestamp", descending : true)

https://github.com/FirebaseExtended/flutterfire/blob/f5a408f0aed529da5602d4562964d60ff50d2a7e/packages/cloud_firestore/cloud_firestore/lib/src/query.dart#L224

从timestore按时间戳降序排列数据

1 个答案: