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Я пытаюсь обновлять список с сервера каждый раз, когда создается виджет, используя GetXController вот мои файлы :

контроллер.дротик

   var newOrders = [].obs;    getNewOrders(BuildContext context, bool notification) async {  newOrders.clear();  isNotification = notification;  ApiServices().fetchNewOrderList(context).then((resp) async {  print(resp);  newNextURL = resp['data']['orders']['next_page_url'];  var allItems = resp['data']['orders']['items'];  if (allItems != null) {  for (var item in allItems) {  if (item['status'] == "assigned" ||  item['status'] == "accepted" ||  item['status'] == "arrived" ||  item['status'] == "collected") {  driverID = item['creator_id'].toString();  print(item['id']);  NewOrderModel newOrderModel = NewOrderModel(  id: item['id'].toString(),  distance: item['distance'],  fee: item['fee'].toString(),  driverID: item['creator_id'].toString(),  status: item['status'],  date_time: item['date_time']);  ApiServices()  .fetchNewOrders(context, newOrderModel.id)  .then((secondResp) {  print('sec $secondResp');  newOrderModel.firebase_token =  secondResp['data']['user_firebase_token'];  print(newOrderModel.firebase_token);  newOrderModel.lat = secondResp['data']['address']['lat'];  newOrderModel.lng = secondResp['data']['address']['lng'];  newOrderModel.address = secondResp['data']['address']['address'];   newOrderModel.addressNote =  secondResp['data']['address']['address_notes'];  newOrderModel.driverID = driverID;  newOrderModel.name = secondResp['data']['name'];  newOrderModel.mobile = secondResp['data']['mobile'];  newOrderModel.estimated_delivery_time =  secondResp['data']['estimated_delivery_time'];  newOrderModel.order_notes = secondResp['data']['order_notes'];  });  newOrders.add(newOrderModel);  }  }  }  isLoading.value = false;  });  }  

и вот как я наблюдаю за этим в своем виджете :

 body: Obx(  () =gt; ListView(  children: ordersC.newOrders.map((e) {  return PreviousOrderShape(  isNew: true,  distance: e.distance,  theNewOrder: e,  fee: e.fee,  id: '${e.id}',  date_time: e.date_time,  );  }).toList(),  ),  ),   

и, наконец, вот как я вызываю его с помощью метода сборки :

 @override  Widget build(BuildContext context) {  SizeConfig().init(context);  ordersC.trackLocation();  ordersC.getNewOrders(context, false); // here it is   return WillPopScope( ...  

это отлично работает для 1-й сборки, затем всякий раз, когда я меняю виджет и возвращаюсь к этому виджету, я получаю эту ошибку :

 E/flutter (12435): [ERROR:flutter/lib/ui/ui_dart_state.cc(209)] Unhandled Exception: setState() or markNeedsBuild() called during build. E/flutter (12435): This Obx widget cannot be marked as needing to build because the framework is already in the process of building widgets. A widget can be marked as needing to be built during the build phase only if one of its ancestors is currently building. This exception is allowed because the framework builds parent widgets before children, which means a dirty descendant will always be built. Otherwise, the framework might not visit this widget during this build phase. E/flutter (12435): The widget on which setState() or markNeedsBuild() was called was: E/flutter (12435): Obx E/flutter (12435): The widget which was currently being built when the offending call was made was: E/flutter (12435): NewOrdersList