Flutter热重装无法显示更改 [英] Flutter hot reloading is not working to display changes

问题描述

我有两个文件，main.dart和sections.dart.

我在section.dart中定义了一些小部件，并在main.dart文件中使用了它们，当我运行flutter run时，命令更改会显示在屏幕上，但是当我按下R进行热重装时，屏幕上没有任何变化

I have defined a few widgets in section.dart and used them in main.dart file, when I run flutter run command changes are displayed on screen, but when I press R to hot reload, nothing changes on screen.

main.dart:

import 'package:flutter/material.dart';
import 'sections.dart';

void main() {
  runApp(MyApp());
}
class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
  return MaterialApp(
      debugShowCheckedModeBanner: false,
      title: 'Share IDEASS',
      home: Scaffold(
        appBar: AppBar(
          title: Text('IDEASs'),
        ),
        body: ListView(
          children: [
           labelsSection,
          ],
        ),
      ),
    );
  }
}

Sections.dart:

import 'package:flutter/material.dart';
class MyApp extends StatelessWidget {

  Widget build(BuildContext context) {
   return MaterialApp(
      title: 'Share IDEAS',

    );
  }
}

Column labelSectionMethod(color,IconData icon, String label,String numbers){
  return Column(
    children: <Widget>[
      Icon(icon, color:color),
      Container(
        child: Text(label,
        style: TextStyle(color: color
        ),
        ),
      ),
      Container(
        child:Text(numbers,
      style:TextStyle(color:color
      ),
      ),
      ),
    ],
  );
}

    Widget labelsSection=Container(
    child: Row(
      mainAxisAlignment: MainAxisAlignment.spaceEvenly,
      children: [
        labelSectionMethod(Colors.red,Icons.supervised_user_circle,"IDEASS","35"),
        labelSectionMethod(Colors.red,Icons.favorite,"LIKE","22"),
        labelSectionMethod(Colors.red,Icons.data_usage,"STREAK","12"),
      ],
    ),
    );

也许是因为我在重复:

 return MaterialApp(
title: 'Share IDEAS',
    );

中的

或与主要功能有关.

in sections.dart, or something to do with main function.

更新:

我将main.dart文件中的sections.dart文件的内容移动了，但仍然无法进行热重装.

i moved content of sections.dart file in main.dart file still hot reload is not working.

推荐答案

通常，当您更改了很多代码，添加了状态，将小部件从无状态更改为已满状态等时，通常会发生这种情况. F5)将解决此问题. 如果仍然无法解决问题，请尝试从手机/模拟器/模拟器中删除该应用程序(关闭该应用程序，然后将其删除)，然后再次运行调试/flutter.这应该可以解决您的问题

This usually happens when you have change a lot of code, added states, changed a widget from stateless to state full, etc. Preforming a hot restart (ctrl +F5) will fix this issue. If this seems to not work still, try removing the app from your phone/simulator/emulator (closing the app, and deleting it) and running debug/flutter run again. This should fix your issue

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