我正在构建一个应用程序，它收集从 Firebase 下达的所有订单和订单详细信息。我必须得到两件事
- 用户登录后我使用单例方法保存的联系人号码中的沙龙详细信息
- 来自 CustID 的客户详细信息
现在发生的是，在调试期间我创建了这个按钮，按下它会从数据库中获取沙龙详细信息。但是现在，只有当我获取详细信息时
- 先点击按钮
- 热重启应用
只有这样，streambuilder 才能获取数据这是导致问题的代码片段：
Future<void> getSalonFromContact(String saloonContact) async {
await for (var docs in firestore.collection('Saloon').snapshots()) {
// final loop = snap.data!.docs;
for (var variable in docs.docs) {
if (variable.get(FieldPath(['Contact'])) == saloonContact) {
aadhar = variable.get(FieldPath(['Aadhar']));
getOrdersList(aadhar);
}
}
}
}
Future<void> getOrdersList(String aadhar) async {
ordersList.clear();
await for (var docs in firestore
.collection('orders')
.where('SalonID', isEqualTo: aadhar)
.snapshots()) {
for (var variable in docs.docs) {
if (variable.get('SalonID') == aadhar) {
ordersList.add(variable.data());
print('My orderlist is $ordersList');
} else {
continue;
}
}
}
}
Future<void> getCustomerDetails(String custID) async {
await for (var docs in firestore
.collection('Customers')
.where('Customer_Uid', isEqualTo: custID)
.snapshots()) {
// final loop = snap.data!.docs;
for (var variable in docs.docs) {
print(variable.data());
if (variable.get(FieldPath(['Customer_Uid'])) == custID) {
customerDetails.add(variable.data());
print('My customer details are ${customerDetails}');
}
}
}
}
@override
void didChangeDependencies() async {
await getSalonFromContact(contactNumber);
for (int i = 0; i < ordersList.length; i++) {
await getCustomerDetails(ordersList[i]['CustomerID']);
}
// TODO: implement didChangeDependencies
super.didChangeDependencies();
}
这些代码用于查找详细信息。
这是我的 StreamBuilder 代码：
StreamBuilder<QuerySnapshot>(
stream: FirebaseFirestore.instance
.collection('orders')
.where('SalonID', isEqualTo: aadhar)
.snapshots(),
builder: (context, snapshot) {
didChangeDependencies();
if (snapshot.connectionState ==
ConnectionState.waiting) {
return Text('Loading...');
} else {
List<AppointmentCard> listitems = [];
return ListView(
physics: NeverScrollableScrollPhysics(),
shrinkWrap: true,
children: snapshot.data!.docs
.asMap()
.map((index, DocumentSnapshot document) {
getCustomerDetails(document['CustomerID']);
return MapEntry(
index,
AppointmentCard(
isCompleted: document['Status'],
name: customerDetails[index]['Name'],
contact: customerDetails[index]
['Contact'],
services: Flexible(
child: ListView.builder(
shrinkWrap: true,
padding: const EdgeInsets.all(8),
itemCount:
document['Requested_Service']
.length,
itemBuilder: (BuildContext context,
int index) {
return Text(
document['Requested_Service']
[index]['name']);
}),
// child: Text(
// // "Text",
// " ${ordersList[i]['Requested_Service']} ",
//// .join(' '),
//
// softWrap: true,
// ),
),
),
);
})
.values
.toList(),
);
}
}),
知道出了什么问题以及如何在没有按钮和热重启的情况下获取数据？