我正在编写一个关于Flutter的函数,它从API中获取数据。函数完成后,我需要将变量作为Future<Response>返回 下面是函数: final String apiUrl = "http://api.aladhan.com/v1/calendarByCitycity=Kayseri&country=Turkey&method=13&month=07&year=2021"; Future&l 浏览37提问于2021-08-01得票数 2 回答已采纳 2...
[-> flutter/lib/ui/dart_runtime_hooks.cc] staticvoidInitDartInternal(Dart_Handle builtin_library, bool is_ui_isolate){ ...if(is_ui_isolate) { Dart_Handle method_name = Dart_NewStringFromCString("_setupHooks"); result = Dart_Invoke(builtin_library, method_name,0, NULL); } Dart_Hand...
[-> flutter/lib/ui/dart_runtime_hooks.cc]static void InitDartInternal(Dart_Handle builtin_library, bool is_ui_isolate) { ... if (is_ui_isolate) { Dart_Handle method_name = Dart_NewStringFromCString("_setupHooks"); result = Dart_Invoke(builtin_library, method_name, 0, NULL); } D...
flutter: main 2 flutter: microtask 1 flutter: microtask 2 flutter: microtask 3 flutter: future 2 flutter: future #2.1 flutter: future #2.2 flutter: future #2.3 flutter: microtask 4 flutter: future 3 flutter: future 4 flutter: future #3.1 new flutter: future #3.2 flutter: future 1 有点多...
// // The port of the new isolate // this port will be used to further // send messages to that isolate // SendPort newIsolateSendPort; // // Instance of the new Isolate // Isolate newIsolate; // // Method that launches a new isolate // and proceeds with the initial // hand...
Flutter是一种跨平台的移动应用开发框架,由Google开发和维护。它使用Dart语言编写,可以同时在iOS和Android平台上构建高性能、美观的原生应用程序。 对于给定的错误信息"没有为类'Future<Map>'定义运算符'[]'",这意味着在代码中尝试对Future<Map>类型的对象使用了'[]'运算符,但该类型并没有定义该运...
然后,在应用程序的其他部分,您可以导入单例并使用CameraManager.instance.*访问方法和属性,例如Camera...
然后,在应用程序的其他部分,您可以导入单例并使用CameraManager.instance.*访问方法和属性,例如Camera...
您需要将每个Future<T>修改为Future的公共类型。您可以使用Future<void>并分配结果,而不是依赖于返回值...
您需要像这样替换返回值。