如何在Flutter对话框中的列表中显示用户输入的值？

Question

我和我的伴侣正在从事一个扑朔迷离的项目。我们都是新手，我们尝试了各种教程。我们面临的问题是，用户输入一组奖励名称，然后在对话框中输入奖励值（我们称其为yoodoos）。我希望这些值以列表的形式显示在其他页面中。我们不知道如何实现。

下面是在dialogs.dart文件中编写的代码

void popupDialog12(BuildContext context) {
    TextEditingController c = new TextEditingController();
    showDialog(
      context: context,
      builder: (context) {
        return new WillPopScope(
          onWillPop: () async => false,
          child: AlertDialog(
            shape: RoundedRectangleBorder(
                borderRadius: BorderRadius.circular(5.0)
            ),
            title: Text("Step 1. Type the new reward"),
            content: TextField (
              maxLength: 60,
              decoration: InputDecoration(
                hintText: 'Max 60 characters.',
              ),
              controller: c,
            ),
            actions: <Widget>[
              FlatButton(
                child: Text("Cancel"),
                onPressed: () {
                  Navigator.pop(context);
                  //return null;
                },
              ),
              FlatButton(
                child: Text("Next"),
                onPressed: () {
                  String input = c.text;
                  input = input.trim();
                  if(input.length == 0){
                    popupDialog11(context);
                    //return null;
                  }
                  else{
                     rewards.add(c.text);
                     popupDialog13(context);
                  }
                },
              )
            ],
          ),
        );
      },
    );
  }

void popupDialog13(BuildContext context){
  TextEditingController c = new TextEditingController();
  showDialog(
    context: context,
    builder: (context) {
      return new WillPopScope(
        onWillPop: () async => false,
        child: AlertDialog(
          shape: RoundedRectangleBorder(
              borderRadius: BorderRadius.circular(5.0)
          ),
          title: Text("Step 2. Set Yoodoos"),
          content: TextField (
            keyboardType: TextInputType.number,
            maxLength: 2,
            decoration: InputDecoration(
              hintText: 'min=1 and max=10',
            ),
            controller: c,
          ),
          actions: <Widget>[
            FlatButton(
              child: Text("Back"),
              onPressed: () {
                Navigator.pop(context);
                rewards.removeLast();
              },
            ),
            FlatButton(
              child: Text("Done"),
              onPressed: () {
                Navigator.pop(context);
                Navigator.pop(context);
                if(int.parse(c.text) <= 10 && int.parse(c.text) >0){
                  configs.yoodoos.add(int.parse(c.text));
                }
                else{
                  popupDialog14(context);
                }
              },
            )
          ],
        ),
      );
    },
  );
}

void popupDialog14(BuildContext context) {
  showDialog(
      context: context,
      builder: (context) {
        return new WillPopScope(
            onWillPop: () async => false,
            child:AlertDialog(
                shape: RoundedRectangleBorder(
                    borderRadius: BorderRadius.circular(5.0)
                ),
                title: Text("Yoodoo"),
                content: Text("Please enter a number between 0 and 10"),
                actions: <Widget>[
                  FlatButton(
                    child: Text("Got it!"),
                    onPressed: () {
                      Navigator.of(context).pop();
                      //Navigator.of(context).pop();
                      //acceptGroupName(context);
                    },
                  ),
                ]
            )
        );
      },
      barrierDismissible: false
  );
}

void popupDialog15(BuildContext context) {
  showDialog(
      context: context,
      builder: (context) {
        return new WillPopScope(
            onWillPop: () async => false,
            child:AlertDialog(
                shape: RoundedRectangleBorder(
                    borderRadius: BorderRadius.circular(5.0)
                ),
                title: Text("Yoodoo"),
                content: Text("No rewards have been set"),
                actions: <Widget>[
                  FlatButton(
                    child: Text("Got it!"),
                    onPressed: () {
                      Navigator.of(context).pop();
                      //Navigator.of(context).pop();
                      //acceptGroupName(context);
                    },
                  ),
                ]
            )
        );
      },
      barrierDismissible: false
  );
}

下面是configure_rewards.dart文件中的代码。这些值将从对话框中传递。

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

var rewards = List();
var yoodoos = List();

class ConfigureRewards extends StatefulWidget{
  _RewardScreen createState() => new _RewardScreen();
}

class _RewardScreen extends State<ConfigureRewards> {

  Widget build(BuildContext context) {
    return new Scaffold(
      appBar: new AppBar(
        automaticallyImplyLeading: false,
        title: new Text("ADD GROUP",
          style: TextStyle(
            fontSize: 20.0,
            fontWeight: FontWeight.w500,
          ),
        ),
      ),
      bottomNavigationBar: BottomAppBar(
        //color: Colors.red,
        child: Container(
          height: 60,
          alignment: Alignment.bottomCenter,
          child: Row(
            crossAxisAlignment: CrossAxisAlignment.center,
            mainAxisAlignment: MainAxisAlignment.center,
            children: <Widget>[
              Expanded(
                child: InkWell(
                  child: Container(
                    padding: EdgeInsets.symmetric(vertical: 15),
                    alignment: Alignment.center,
                    child: Text(
                      'Delete a Reward',
                      style: TextStyle(fontSize: 20, fontWeight: FontWeight.w500,
                          color: Colors.white),
                    ),
                    decoration: BoxDecoration(
                      //borderRadius: BorderRadius.all(Radius.circular(5)),
                      color: Colors.black,
                    ),
                  ),
                  onTap: () {
                    if(rewards.isNotEmpty){
                      rewards.removeLast();
                      yoodoos.removeLast();
                    }
                    else{
                      popupDialog15(context);
                    }
                  },
                ),
              ),
              SizedBox(
                child: Divider(
                  color: Colors.white,
                  thickness: 100,
                ),
              ),
              Expanded(
                child: InkWell(
                  child:  Container(
                    padding: EdgeInsets.symmetric(vertical: 15),
                    alignment: Alignment.center,
                    child: Text(
                      'Add a reward',
                      style: TextStyle(fontSize: 20, fontWeight: FontWeight.w500,
                          color: Colors.white),
                    ),
                    decoration: BoxDecoration(
                      //borderRadius: BorderRadius.all(Radius.circular(5)),
                      color: Colors.black,
                    ),
                  ),
                  onTap: () {
                    popupDialog12(context);
                  },
                ),
              ),
            ],
          ),
        ),
        elevation: 0,
      ),
    );
  }

我需要逐步指南来了解如何显示列表。