如何使用getx在一个控制器中获取另一个控制器的变量
如何使用getx在一个控制器中获取另一个控制器的变量
提问于 2021-09-05 13:04:16
这是一个与getx有关的问题。我有两个控制器。ContractsController和NotificationController.在ContractsController中，我通过调用Api请求将值放入观察者变量中。我现在想要的是在另一个控制器- NotificationController中获取该变量的数据。如何使用getx函数获得该值？
ContractsController
class ContractsController extends GetxController {
ExpiringContractRepository _expiringContractRepository;
final expiringContracts = <ExpiringContract>[].obs; // This is the value what I want in another controller
ContractsController() {
_expiringContractRepository = new ExpiringContractRepository();
}
@override
Future<void> onInit() async {
await refreshContracts();
super.onInit();
}
Future refreshContracts({bool showMessage}) async {
await getExpiringContracts();
if (showMessage == true) {
Get.showSnackbar(Ui.SuccessSnackBar(message: "List of expiring contracts refreshed successfully".tr));
}
}
Future getExpiringContracts() async {
try {
expiringContracts.value = await _expiringContractRepository.getAll(); // put the value from the api
} catch (e) {
Get.showSnackbar(Ui.ErrorSnackBar(message: e.toString()));
}
}
}在api请求之后，将使用数据成功地更新expiringContracts。现在，我想在NotificationController中得到这个值
NotificationController
class NotificationsController extends GetxController {
final notifications = <Notification>[].obs;
ContractsController contractsController;
NotificationsController() {
}
@override
void onInit() async {
contractsController = Get.find<ContractsController>();
print(contractsController.expiringContracts); // This shows an empty list ?????
super.onInit();
}
}Stack Overflow用户
回答已采纳
发布于 2021-09-05 23:44:35
在GetX中有一些强大的方法。我用Get.put和Get.find解决了这个问题
这是我添加的代码。
ContractsController
class ContractsController extends GetxController {
ExpiringContractRepository _expiringContractRepository;
final expiringContracts = <ExpiringContract>[].obs; // This is the value what I want in another controller
ContractsController() {
_expiringContractRepository = new ExpiringContractRepository();
}
@override
Future<void> onInit() async {
await refreshContracts();
super.onInit();
}
Future refreshContracts({bool showMessage}) async {
await getExpiringContracts();
if (showMessage == true) {
Get.showSnackbar(Ui.SuccessSnackBar(message: "List of expiring contracts refreshed successfully".tr));
}
}
Future getExpiringContracts() async {
try {
expiringContracts.value = await _expiringContractRepository.getAll(); // put the value from the API
// ******************************** //
Get.put(ContractsController()); // Added here
} catch (e) {
Get.showSnackbar(Ui.ErrorSnackBar(message: e.toString()));
}
}
}NotificationController
class NotificationsController extends GetxController {
final notifications = <Notification>[].obs;
ContractsController contractsController;
NotificationsController() {
}
@override
void onInit() async {
// ******************************** //
contractsController = Get.find<ContractsController>(); // Added here.
print(contractsController.expiringContracts); // This shows the updated value
super.onInit();
}
}最后，我发现GetX是简单但强大的状态管理在颤振。谢谢。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/69063658
复制相关文章
相似问题
腾讯云开发者
