小编Kag*_*ura的帖子

我是否必须TextEditingController为每个TextField 示例创建多个

var oneController = TextEditingController();
var twoController = TextEditingController();

然后

TextField(
   controller: oneController,
   decoration: new InputDecoration(labelText: "add type *income"),
),
TextField(
   controller: twoController,
   decoration: new InputDecoration(labelText: "Enter a number"),
   keyboardType: TextInputType.number,
),

或者有没有办法只使用一个？

我有一个使用 Cupertino 应用程序的简单应用程序。我在底部有四个选项卡，允许我在页面之间导航。在AddCashPage我在页面上添加的最后一个选项卡上的按钮上，这将允许我导航到第二页CalendarPage

该应用程序只有一页，所以我会发布整个内容

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

import 'pages/summary_page.dart';
import 'pages/calendar_page.dart';
import 'pages/remove_cash_page.dart';


final scakey = new GlobalKey<_BottomState>();

class CashOnHandApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Cash on Hand',
      home: HomePage(),
    );
  }
}

class HomePage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: CupertinoPageScaffold(
        navigationBar: CupertinoNavigationBar(
          middle: const Text('Cash on Hand'),
        ),
        child: Bottom(key: scakey),
      ),
    );
  }
}

class Bottom extends StatefulWidget { …