Flutter：在 _WidgetsAppState 中找不到路由 RouteSettings("/HomePage", null) 的生成器

我在我的演示项目中使用以下路线：

 routes: <String, WidgetBuilder>{
    '/HomePage': (BuildContext context) => HomePage()
  },

并尝试使用以下代码导航主屏幕：

onPressed: () {
    debugPrint("Hello button is clicked");

     Navigator.of(context)
               .pushReplacementNamed('/HomePage');
 },

但是当我单击按钮时，我收到以下异常：

════════ Exception caught by gesture ═══════════════════════════════════════════════════════════════
The following assertion was thrown while handling a gesture:
Could not find a generator for route RouteSettings("/HomePage", null) in the _WidgetsAppState.

Generators for routes are searched for in the following order:
 1. For the "/" route, the "home" property, if non-null, is used.
 2. Otherwise, the "routes" table is used, if it has an entry for the route.
 3. Otherwise, onGenerateRoute is called. It should return a non-null value for any valid route not handled by "home" and "routes".
 4. Finally if all else fails onUnknownRoute is called.
Unfortunately, onUnknownRoute was not set.
When the exception was thrown, this was the stack: 
#0      _WidgetsAppState._onUnknownRoute.<anonymous closure> (package:flutter/src/widgets/app.dart:772:9)
#1      _WidgetsAppState._onUnknownRoute (package:flutter/src/widgets/app.dart:785:6)
#2      NavigatorState._routeNamed (package:flutter/src/widgets/navigator.dart:1625:22)
#3      NavigatorState.pushReplacementNamed (package:flutter/src/widgets/navigator.dart:1690:35)
#4      _RegisterPage.build.<anonymous closure> (package:oricon/register.dart:231:42)

我已经检查过下面的堆栈溢出链接

• 在 _WidgetsAppState 中找不到路由 RouteSettings("/", null) 的生成器 https://stackoverflow.com/q/58909129/8112541
• 如何使用 flutter 中的路由导航到主页面以外的页面？ https://stackoverflow.com/q/56233077/8112541
• 在 _MaterialAppState 中找不到路线“主页”的生成器 https://stackoverflow.com/q/52405521/8112541
• 为什么当我使用pushNamedReplacement而不是pushReplacement时它不​​起作用？ https://stackoverflow.com/q/57146482/8112541

如果您需要更多信息，请告诉我。

try this

 Navigator.of(context, rootNavigator: true).pushNamed("/HomePage");