我有两个 StreamBulder First Stream in collection("Users").document("PhoneNum") 是内容名称和照片。sec Stream in Collection("Users").document("PhoneNum").document("FrindList") 这是我想让第一个 Stream 获得我不想为所有人构建 Stream 的所有结果的 Frind PhoneNumber FrindList 获取名称和照片并将其放入 ListView
我尝试了很多代码，但它不起作用
我试着做这样
StreamBuilder(
stream: Firestore.instance.collection("Users")
.document(names)
.snapshots(),
builder: (context, snapshot) {
if (!snapshot.hasData) {
return CircularProgressIndicator(
backgroundColor: Colors.white,
);
} else {
List<Widget> list = [];
var Frindname = snapshot.data["name"];
var Frindpic = snapshot.data["ImageURL"];
var Frindnum = snapshot.data["PhoneNumber"];
try {
return GestureDetector(
onTap: () {
var chatkey;
if (widget.phoneN.compareTo(Frindnum) >
0) {
chatkey = widget.phoneN + Frindnum;
print(chatkey);
} else {
chatkey = Frindnum + widget.phoneN;
print(chatkey);
}
Navigator.push(context,
MaterialPageRoute(
builder: (context) {
return Chat();
}));
},
child: Container(
decoration: BoxDecoration(
borderRadius: BorderRadius.vertical(
bottom: Radius.elliptical(
100, 100),
top: Radius.elliptical(100, 100)),
color: Colors.grey[200],),
padding: EdgeInsets.all(20),
child: Row(
children: <Widget>[
CircleAvatar(
backgroundImage: NetworkImage(
Frindpic), radius: 30,),
SizedBox(width: 10,),
Text(Frindname, style: TextStyle(
color: Colors.deepPurple,
fontSize: 18,
fontWeight: FontWeight.bold),),
],
),
),
);
} catch (e) {
return CircularProgressIndicator(
backgroundColor: Colors.white,);
}
}
},
);
然后在其他流构建器中调用此方法
StreamBuilder<QuerySnapshot>(
stream: Firestore.instance.collection("Users").document(widget.phoneN).collection("FrindList").snapshots(),
builder: (context, snapshot) {
if (!snapshot.hasData) {
CircularProgressIndicator(
backgroundColor: Colors.white,
);
}
try {
List<Widget> e = [];
snapshot.data.documents.forEach((d) {
print(d.data["FrindKey"]);
e.add(Streems(d.data["FrindKey"]));
}
);
return ListView(
children: e,
);
} catch (e) {
print(e);
return Text("No Friend Found", style: TextStyle(
color: Colors.deepPurple,
fontSize: 24,
fontWeight: FontWeight.bold),);
}
}
),
这是我的数据库结构
