错误：参数类型“TextEditingController”无法分配给参数类型“String”。在 FLUTTER
Posted
技术标签:
【中文标题】错误：参数类型“TextEditingController”无法分配给参数类型“String”。在 FLUTTER【英文标题】：Error: The argument type 'TextEditingController' can't be assigned to the parameter type 'String'.in FLUTTER 【发布时间】：2021-05-13 02:32:54 【问题描述】：我的 signup.dart 文件：
import 'package:firebase_auth/firebase_auth.dart';
import 'package:flutter/material.dart';
class SignUp extends StatefulWidget
@override
_SignUpState createState() => _SignUpState();
class _SignUpState extends State<SignUp>
final FirebaseAuth firebaseAuth = FirebaseAuth.instance;
final _formKey = GlobalKey<FormState>();
TextEditingController _emailTextController = TextEditingController();
TextEditingController _passwordTextController = TextEditingController();
TextEditingController _nameTextController = TextEditingController();
TextEditingController _confirmPasswordTextController =
TextEditingController();
String gender;
String groupValue = "Erkek";
bool loading = false;
@override
Widget build(BuildContext context)
return Scaffold(
body: Stack(
children: <Widget>[
Image.asset(
'images/backg.jpg',
fit: BoxFit.fill,
width: double.infinity,
height: double.infinity,
),
Container(
color: Colors.black.withOpacity(0.4),
width: double.infinity,
height: double.infinity,
),
Padding(
padding: const EdgeInsets.only(top: 200.0),
child: Center(
child: Form(
key: _formKey,
child: ListView(
children: <Widget>[
Padding(
padding:
const EdgeInsets.fromLTRB(14.0, 8.0, 14.0, 8.0),
child: Material(
borderRadius: BorderRadius.circular(20.0),
color: Colors.white.withOpacity(0.4),
elevation: 0.0,
child: Padding(
padding: const EdgeInsets.only(left: 12.0),
child: ListTile(
title: TextFormField(
controller: _passwordTextController,
decoration: InputDecoration(
hintText: "Ad Soyad",
icon: Icon(Icons.person),
border: InputBorder.none
),
// ignore: missing_return
validator: (value)
if (value.isEmpty)
return "İsim boşluğu doldurulmalıdır.";
return null;
,
// ignore: missing_return
),
trailing: Icon(Icons.remove_red_eye),
),
),
),
),
Padding(
padding:
const EdgeInsets.fromLTRB(14.0, 8.0, 14.0, 8.0),
child: Material(
borderRadius: BorderRadius.circular(20.0),
color: Colors.white.withOpacity(0.4),
elevation: 0.0,
child: Padding(
padding: const EdgeInsets.only(left: 12.0),
child: TextFormField(
controller: _emailTextController,
decoration: InputDecoration(
hintText: "Email",
icon: Icon(Icons.email),
border: InputBorder.none
),
// ignore: missing_return
validator: (value)
if (value.isEmpty)
Pattern pattern =
r'^(([^<>()[]\.,;:\s@"]+(.[^<>()[]\.,;:\s@"]+)*)|(".+"))@(([[0-9]1,3.[0-9]1,3.[0-9]1,3.[0-9]1,3])|(([a-zA-Z-0-9]+.)+[a-zA-Z]2,))$';
RegExp regex = new RegExp(pattern);
if (!regex.hasMatch(value))
return "Lütfen geçerli bir mail adresi giriniz.";
else
return null;
),
),
),
),
Padding(
padding: const EdgeInsets.fromLTRB(14.0, 8.0, 14.0, 8.0),
child: new Container(
color: Colors.white.withOpacity(0.4),
child: Row(
children: <Widget>[
Expanded(
child: ListTile(
title: Text(
"Erkek",
textAlign: TextAlign.end ,
style: TextStyle(color: Colors.white),
),
trailing: Radio(value: "Erkek", groupValue: groupValue, onChanged: (e)=>valueChanged(e)),
)),
Expanded(
child: ListTile(
title: Text(
"Kadın",
textAlign: TextAlign.end ,
style: TextStyle(color: Colors.white),
),
trailing: Radio(value: "Kadın", groupValue: groupValue, onChanged: (e)=>valueChanged(e)),
)),
],
),
),
),
Padding(
padding:
const EdgeInsets.fromLTRB(14.0, 8.0, 14.0, 8.0),
child: Material(
borderRadius: BorderRadius.circular(20.0),
color: Colors.white.withOpacity(0.4),
elevation: 0.0,
child: Padding(
padding: const EdgeInsets.only(left: 12.0),
child: ListTile(
title: TextFormField(
controller: _passwordTextController,
obscureText: true,
decoration: InputDecoration(
hintText: "Şifre",
icon: Icon(Icons.lock_outline),
border: InputBorder.none
),
// ignore: missing_return
validator: (value)
if (value.isEmpty)
return "Şifre boşluğu doldurulmalıdır.";
else if (value.length < 6)
return "Şifre 6 haneden uzun olmalı!";
return null;
,
// ignore: missing_return
),
trailing : IconButton(icon: Icon(Icons.remove_red_eye), onPressed: ())
),
),
),
),
Padding(
padding:
const EdgeInsets.fromLTRB(14.0, 8.0, 14.0, 8.0),
child: Material(
borderRadius: BorderRadius.circular(20.0),
color: Colors.white.withOpacity(0.4),
elevation: 0.0,
child: Padding(
padding: const EdgeInsets.only(left: 12.0),
child: ListTile(
title : TextFormField(
controller: _confirmPasswordTextController,
obscureText: true,
decoration: InputDecoration(
hintText: "Şifreyi Doğrula",
icon: Icon(Icons.lock_outline),
border: InputBorder.none
),
// ignore: missing_return
validator: (value)
if (value.isEmpty)
return "Şifre boşluğu doldurulmalıdır.";
else if (value.length < 6)
return "Şifre 6 haneden uzun olmalı!";
else if (_passwordTextController != value)
return "Şifreler uyuşmuyor.";
return null;
,
// ignore: missing_return
),
trailing : IconButton(icon: Icon(Icons.remove_red_eye), onPressed: ()),
),
),
),
),
Padding(
padding:
const EdgeInsets.fromLTRB(12.0, 8.0, 12.0, 8.0),
child: Material(
borderRadius: BorderRadius.circular(20.0),
color: Colors.red.withOpacity(0.8),
elevation: 0.0,
child: MaterialButton(
onPressed: ()
validateForm();
,
minWidth: MediaQuery.of(context).size.width,
child: Text(
"Kayıt Ol",
textAlign: TextAlign.center,
style: TextStyle(
color: Colors.white,
fontWeight: FontWeight.bold,
fontSize: 15.0),
),
)),
),
Padding(
padding: const EdgeInsets.all(8.0),
child: InkWell(
onTap: ()
Navigator.pop(context);
,
child: Text(
"Giriş Yap",
textAlign: TextAlign.center,
style: TextStyle(color: Colors.red),
))),
],
)),
),
),
Visibility(
visible: loading ?? true,
child: Center(
child: Container(
alignment: Alignment.center,
color: Colors.white.withOpacity(0.9),
child: CircularProgressIndicator(
valueColor: AlwaysStoppedAnimation<Color>(Colors.red),
),
),
))
],
),
);
valueChanged(e)
setState(()
if (e == "Erkek")
groupValue = e;
gender = e;
else if (e == "Kadın")
groupValue = e;
gender = e;
);
void validateForm() async
FormState formState = _formKey.currentState;
if(formState.validate())
User user = await firebaseAuth.currentUser;
if(user == null)
firebaseAuth.createUserWithEmailAndPassword(email: _emailTextController, password: _passwordTextController).then((user) =>
);
我的显示错误。
正在执行热重载... 正在将文件同步到设备 sdk gphone x86... lib/pages/signup.dart:276:60：错误：参数类型“TextEditingController”不能分配给参数类型“String”。
'TextEditingController' 来自'package:flutter/src/widgets/editable_text.dart' ('/C:/src/flutter/packages/flutter/lib/src/widgets/editable_text.dart')。 firebaseAuth.createUserWithEmailAndPassword（电子邮件：_emailTextController，密码：_passwordTextController）.then（（用户）=> ^ lib/pages/signup.dart:276:92：错误：参数类型“TextEditingController”不能分配给参数类型“String”。
'TextEditingController' 来自'package:flutter/src/widgets/editable_text.dart' ('/C:/src/flutter/packages/flutter/lib/src/widgets/editable_text.dart')。 firebaseAuth.createUserWithEmailAndPassword（电子邮件：_emailTextController，密码：_passwordTextController）.then（（用户）=> ^ ==========新错误RR=================
void validateForm() 异步 FormState formState = _formKey.currentState; if (formState.validate()) 用户用户 = 等待 firebaseAuth.currentUser； 如果（用户 == 空） firebaseAuth .createUserWithEmailAndPassword( 电子邮件：_emailTextController.text， 密码：_passwordTextController.text） .then((用户) =>
_userServices.createUser(
"username": _nameTextController.text,
"email": user.email
)
);
【问题讨论】：
【参考方案1】：使用_emailTextController.text 而不仅仅是_emailTextController。
【讨论】：
是的。有效。而且我还有另一个错误你能帮我吗？没有为“UserCredential”类型定义吸气剂“电子邮件”。 _userServices.createUser( "username": _nameTextController.text, "email": user.email 确保在类中创建了“email”字段并传递给构造函数以上是关于错误：参数类型“TextEditingController”无法分配给参数类型“String”。在 FLUTTER的主要内容，如果未能解决你的问题，请参考以下文章
错误：参数类型“上下文”不能分配给参数类型“BuildContext”
错误：不能将参数类型“String”分配给参数类型“Uri”。使用JsonPlaceHolder