我知道有一吨这样的问题，但我是全新的Flutter，我还没有找到一个职位，适合我的需要，或者也许我只是想错了。
在使用Flutter进行开发时，您可能已经看到几乎每个屏幕都需要将数据从一个屏幕传递到另一个屏幕，并且可能还需要从另一个屏幕接收数据。

**家. dart **

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

import 'applicationbar.dart';
import 'navigationdrawer.dart';
import 'bluetooth.dart';

class Home extends StatefulWidget {
  @override
  _HomeState createState() => _HomeState();
}

class _HomeState extends State<Home> {
  String _string = '0m';  //so if _isFeetChecked is true in settings.dart this is '0ft'

  @override
  Widget build(BuildContext context) {

    return Scaffold(
      backgroundColor: Colors.grey[900],
      appBar: ApplicationBar(title: 'Luggage Follower'),
      drawer: NavigationDrawer(),
      body:Column(
        mainAxisAlignment: MainAxisAlignment.center,
        children: <Widget>[
          Padding(
            padding: const EdgeInsets.symmetric(vertical: 10,horizontal: 0),
            child: Text('good Status', style: Theme.of(context).textTheme.body2),
          ),
          Padding(
            padding: const EdgeInsets.symmetric(vertical: 10,horizontal: 0),
            child: Text('Paired', style: Theme.of(context).textTheme.body1),
          ),
          Padding(
            padding: const EdgeInsets.symmetric(vertical: 20,horizontal: 0),
            child: Divider(height: 3.0, color: Colors.pinkAccent, indent: 150, endIndent: 150),
          ),
          Padding(
            padding: const EdgeInsets.symmetric(vertical: 10,horizontal: 0),
            child: Text('Distance to Luggage', style: Theme.of(context).textTheme.body2),
          ),
          Padding(
            padding: const EdgeInsets.symmetric(vertical: 10,horizontal: 0),
            child: Text(_string, style: Theme.of(context).textTheme.body1), //dynamic text here
          ),
          Padding(
            padding: const EdgeInsets.symmetric(vertical: 10,horizontal: 0),
            child: LuggageFollow(),
          ),
        ],
      ),
    );
  }
}

设置.省道

import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:audioplayers/audio_cache.dart';

import 'applicationbar.dart';
import 'navigationdrawer.dart';

class SettingsData {
  bool feet;
  bool metres;

  SettingsData({this.feet, this.metres});
}

class Settings extends StatefulWidget {
  @override
  _SettingsState createState() => _SettingsState();
}

class _SettingsState extends State<Settings> {
  static bool _isFeetChecked   = false;
  static bool _isMetersChecked = true;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: ApplicationBar(title: 'Settings'),
      drawer: NavigationDrawer(),
      body: Column(
          //crossAxisAlignment: CrossAxisAlignment.start,
          children: <Widget>[
            Padding(
              padding: EdgeInsets.symmetric(vertical: 20.0,horizontal: 20),
              child: Text('Distance Units')
            ),
            Divider(
              height: 3.0,
              color: Colors.pink,
            ),
            Padding(
              padding: EdgeInsets.symmetric(vertical: 20.0,horizontal: 0),
              child: CheckboxListTile(
                title: Text('Distance in feet', style: Theme.of(context).textTheme.body1),
                value: _isFeetChecked,
                onChanged: (bool value) {
                  setState(() {
                    _isFeetChecked = value; _isMetersChecked = !value;});
                },
                checkColor: Colors.white,
                activeColor: Colors.pink,
                subtitle: Text('1 foot ~ 0.3 metres',style: Theme.of(context).textTheme.display2),
              ),
            ),
            Padding(
              padding: EdgeInsets.symmetric(vertical: 20.0,horizontal: 0),
              child: CheckboxListTile(
                title: Text('Distance in metres', style: Theme.of(context).textTheme.body1),
                value: _isMetersChecked,
                onChanged: (bool value) {
                  setState(() { _isMetersChecked = value; _isFeetChecked = !value;updateData();});
                },
                checkColor: Colors.white,
                activeColor: Colors.pink,
                subtitle: Text('1 metre ~ 3 feet',style: Theme.of(context).textTheme.display2),
              ),
            ),
            Padding(
              padding: EdgeInsets.symmetric(vertical: 30.0,horizontal: 20),
              child: Text('Notifications')
            ),
            Divider(
                height: 3.0,
                color: Colors.pink,
            ),

              ),
            ),
          ],
      ),
    );
  }
}