PUSH 事件在 Flutter 中发生两次是正常的吗？

Question

我试图很好地理解 Flutter 生命周期，但我不确定像 PUSH a view 这样的事件发生两次是否正常。我正在搜索仅在显示视图时发生一次的事件。例如： ViewA 显示 eventImSearchingOn 仅发生一次。 ViewA打开ViewB，ViewA停用。 ViewB 返回到 ViewA 并且 eventImSearchingOn 只发生一次。

我试过的代码日志：

InitState SplashScreenUI
ChangeDependencies SplashScreenUI
PUSH SplashScreenUI
InitState SplashScreenUI
ChangeDependencies SplashScreenUI
PUSH SplashScreenUI

主要Class

@override
  Widget build(BuildContext context) {
    return StoreProvider<AppState>(
      store: widget.store,
      child: MaterialApp(
        ...
        ....
        initialRoute: '/SplashScreen',
        home: SplashScreenUI(),
        navigatorKey: Keys.navKey,
        navigatorObservers: [Keys.routeObserver],
        routes: <String, WidgetBuilder>{
          '/Home': (BuildContext context) => HomePageUI(),
          '/Login': (BuildContext context) => LoginPageUI(),
          '/Routine': (BuildContext context) => RoutineUI(),
          '/Notifications': (BuildContext context) => NotificationsUI(),
          '/Chat': (BuildContext context) => ChatUI(),
          '/Profile': (BuildContext context) => ProfileUI(),
          '/ProfileForm': (BuildContext context) => ProfileFormUI(),
          '/Interview': (BuildContext context) => InterviewUI(),
          '/BodyCheck': (BuildContext context) => BodyCheckUI(),
          '/SplashScreen': (BuildContext context) => SplashScreenUI(),

启动画面Class

class _SplashScreenUIState extends State<SplashScreenUI>  with RouteAware{

  _SplashScreenUIState();

  @override
  void initState() {
    print("InitState SplashScreenUI");
    super.initState();
    store.dispatch(CheckLogIn());
  }

  @override
  void didChangeDependencies() {
    print("ChangeDependencies SplashScreenUI");
    super.didChangeDependencies();
    Keys.routeObserver.subscribe(this, ModalRoute.of(context));
  }

  @override
  void deactivate() {
    print("Deactivate SplashScreenUI");
    super.deactivate();
  }

  @override
  void dispose() {
    print("Dispose SplashScreenUI");
    Keys.routeObserver.unsubscribe(this);
    super.dispose();
  }

  @override
  void didPush() {
    print("PUSH SplashScreenUI");    
  }

  @override
  void didPopNext() {
    print("POP SplashScreenUI");
  }

Answer 1

对不起，问题在那里：

initialRoute: '/SplashScreen',
home: SplashScreenUI(),

双重声明导致 SplashScreen 被调用两次。改成这样，问题解决

home: SplashScreenUI(),

PUSH 事件在 Flutter 中发生两次是正常的吗？

It's normal that PUSH events occurs ever twice in Flutter?

lifecycle

flutter