在_WidgetsAppState中找不到路由RouteSettings("/"，null)的生成器 [英] Could not find a generator for route RouteSettings("/", null) in the _WidgetsAppState

问题描述

我正在编写一个 Flutter 应用(这里是Kinda的初学者).这是我的代码.
main.dart

I'm writing a Flutter app (Kinda a beginner here). Here is my code.
main.dart

import 'package:flutter/material.dart';
import 'package:flutter_app_timer/helpers/constants.dart';

void main() => runApp(ContactApp());

class ContactApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      title: appTitle,
      theme: new ThemeData(
        primaryColor: appColor,
      ),
    );
  }

}  

constants.dart

import 'package:flutter/material.dart';

Color appColor = Color.fromRGBO(58, 66, 86, 1.0);

const appTitle = "Contact App";  

当我在模拟器中运行它时，出现以下异常消息.

When I run it in emulator, I get below exception message.

I/flutter(7381):W小工具库引起的异常CAbr
I/flutter(7381):构建了IconTheme(IconThemeData#2abdc(color:
I/颤振(7381):颜色(0xdd000000))):
I/flutter(7381):在_WidgetsAppState中找不到路由RouteSettings("/"，null)的生成器.

I/flutter ( 7381): ══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞═══════════════════════════════════════════════════════════
I/flutter ( 7381): The following assertion was thrown building IconTheme(IconThemeData#2abdc(color:
I/flutter ( 7381): Color(0xdd000000))):
I/flutter ( 7381): Could not find a generator for route RouteSettings("/", null) in the _WidgetsAppState.

我是否需要在 main.dart 中添加 Navigator ?我怎样才能解决这个问题?

Do I need to add Navigator in main.dart? How can I fix this?

推荐答案

您必须使用属性 home 或 initialRoute 导航到初始屏幕才能显示用户.

You must have to use a property home or initialRoute to navigate to your initial screen to display to the users.

因此，只需在MaterialApp内添加一个家庭媒体资源

So, just add a home Property like, inside your MaterialApp

return MaterialApp(
      debugShowCheckedModeBanner: false,
      title: appTitle,
      theme: new ThemeData(
        primaryColor: appColor,
      ),
      home: TestPage ()
    );

创建要向用户显示的屏幕或页面，如下所示，

Create a screen or page to display to the users as following,

class TestPage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Center(child: Text("Hello World!!"),),
    );
  }
}

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