问题描述
我目前正在制作UserPage和UserModifyPage。现在，我有了只存储用户信息的UserClass和用于修改UserData的User-Provider。
getter'id'在null上被调用。
因此，此图片为“ Settings.dart”页面，显示用户名和用户电子邮件
另一个是修改UserData的ModifyUser.dart页面。
这是我的下面的代码。
1。 User.dart（模型）
import 'package:Flutter/material.dart';
class User{
String id;
String userName;
String email;
// final String photoURL;
// List<String> photoURL;
String photoURL;
String userAddress;
User({
// this.id,@required this.id,@required this.userName,@required this.email,@required this.photoURL,@required this.userAddress
});
factory User.from(User user){
return User(
id: user.id ?? '',userName: user.userName ?? '',email: user.email ?? '',// photoURL: user.photoURL ?? [],photoURL: user.photoURL ?? '',userAddress: user.userAddress ?? '',);
}
}
2。 UserProvider.dart
import 'dart:math';
import 'package:Flutter/material.dart';
import 'package:Flutter_app/model/game/Users.dart';
class UserProvider with ChangeNotifier{
List<User> _userInfoList = [];
User _userModify;
List<User> get userInfoList {
return [..._userInfoList];
}
User get userModify{
return User.from(_userModify);
}
setname(User user){
_userModify.userName = user.userName;
notifyListeners();
}
void createuserInfo(User userModfiy){
if (userModify != null){
// User.fro = userModify.id ?? '';
final User modifyUser = User.from(userModfiy);
// modifyUser.id = modifyUser.id ?? 'test';
// modifyUser.email = modifyUser.email ?? '';
modifyUser.userName = modifyUser.userName ?? '';
}
}
void changeUserInfo(User userModfiy,String userName,String email,String imageURL,String address){
// userModfiy.userName = userName
// userModfiy.email = email;
// userModfiy.photoURL = imageURL;
// userModfiy.userAddress = address;
// notifyListeners();
final int index = _userInfoList.indexWhere((userInfo) => userInfo.id == _userModify.id);
if(index != 1){
final User modifyUser = User.from(userModify);
modifyUser.userName = userName;
modifyUser.email = email;
modifyUser.photoURL = imageURL;
modifyUser.userAddress = address;
}
notifyListeners();
}
}
3。 Settings.dart
import 'package:Flutter/material.dart';
import 'package:Flutter_app/Provider/users.dart';
import 'package:Flutter_app/app_screens/app_attributes/SettingsImage.dart';
import 'package:Flutter_app/model/game/Users.dart';
import 'package:Flutter_app/shared/style.dart';
import 'package:Flutter_app/widgets/Commons/details_form.dart';
import 'package:Flutter_app/app_screens/SideMenu.dart';
import 'package:provider/provider.dart';
class Setting extends StatefulWidget {
@override
_SettingState createState() => _SettingState();
}
class _SettingState extends State<Setting> {
User userModification;
final TextEditingController userNameTextController = TextEditingController();
final TextEditingController userEmailTextController = TextEditingController();
final TextEditingController userAddressController = TextEditingController();
final TextEditingController userImageTextController = TextEditingController();
// @override
// void initState(){
// setState((){
// userModification = Provider.of<UserProvider>(context,listen: false).userModify;
// });
// if(userModification == null){
// print("Pass me the Salt Please Man!!!");
// // final List<User> userInfoList = Provider.of<UserProvider>(context,listen: false).i
// }
// }
AppBar _buildAppBarSettings(){
return AppBar(
title: Text("SETTINGS"),backgroundColor: appBarColor,centerTitle: true,);
}
@override
Widget build(BuildContext context) {
return Scaffold(
drawer: SideMenu(),appBar: _buildAppBarSettings(),body: _buildSettingsBody(context),);
}
Widget _buildSettingsBody(BuildContext context){
double screenHeight = MediaQuery.of(context).size.height;
return Container(
height: screenHeight,color: backgroundColor,child: Stack(
overflow: Overflow.visible,children: [
Padding(
padding: EdgeInsets.symmetric(vertical: 20,horizontal: defaultPadding),child: SingleChildScrollView(
child: Column(
children: [
_buildProfileImage(),SizedBox(height: defaultPadding * 4),_buildProfileInfo(),],),)
),_buildEditButton(context)
],)
);
}
Widget _buildProfileImage(){
return Column(
children: <Widget>[
Center(child: ProfileImageButton(),SizedBox(height: defaultPadding),Center(
child: Text(_getUserName(),style: TextStyle(fontSize: 24)),]
);
}
Widget _buildProfileInfo(){
return Column(
crossAxisAlignment: CrossAxisAlignment.start,children: <Widget>[
DetailsForm(
contentsTitle: "Local ID",contentsInfo: "8VxqWO9pRBTvpLGxFXquloo97X13",marginBottom: defaultPadding * 2,DetailsForm(
contentsTitle: "Email",contentsInfo: _getEmail(),DetailsForm(
contentsTitle: "Address",contentsInfo: _getAddress(),]
);
}
Widget _buildEditButton(BuildContext context){
return Positioned(
bottom: 0,left: 0,right: 0,child: FlatButton(
shape: ContinuousRectangleBorder(side: BorderSide(color: lineColor)),color: Colors.black87,child: Padding(
padding: EdgeInsets.all(defaultPadding / 2),child: Text("EDIT",style: settingsMainFont),onpressed: () {
Navigator.pushNamed(context,"/modify");
},);
}
String _getUserName(){
return userNameTextController.text == null ||
userNameTextController.text.trim().isEmpty ? 'YourName'
: userNameTextController.text;
}
String _getEmail(){
return userEmailTextController.text == null ||
userEmailTextController.text.trim().isEmpty? 'text@gmail.com'
: userEmailTextController.text;
}
String _getimageLink(){
return userImageTextController.text == null ||
userImageTextController.text.trim().isEmpty? 'http://url.com'
: userImageTextController.text;
}
String _getAddress(){
return userAddressController.text == null ||
userAddressController.text.trim().isEmpty? 'YourLocation'
: userAddressController.text;
}
}
4。 ModifyProfile.dart
import 'package:Flutter/material.dart';
import 'package:Flutter_app/Provider/users.dart';
import 'package:Flutter_app/app_screens/SideMenu.dart';
import 'package:Flutter_app/model/game/Users.dart';
import 'package:Flutter_app/shared/style.dart';
import 'package:Flutter_app/widgets/Commons/details_form.dart';
import 'package:Flutter_app/widgets/DetailsPage/label.dart';
import 'package:provider/provider.dart';
import 'package:Flutter_app/model/game/Users.dart';
class ModifyProfile extends StatefulWidget {
@override
_ModifyProfileState createState() => _ModifyProfileState();
}
class _ModifyProfileState extends State<ModifyProfile> {
final _formModifyKey = GlobalKey<FormState>();
final TextEditingController userNameTextController = TextEditingController();
User user;
String _userName = 'UserName';
String _email = 'dddd@gmail.com';
String _imageURL = 'https://www.naver.com';
String _address = 'SK SEOngsu V1 CENTER I,SEOngsu-dong 2-ga,SEOngdong-du,SEOul,S.Korea';
bool _isInit = false;
final Map<String,dynamic> _formUserData = {
'username': '','email': '','imageURL': '','Address': '',// ''
};
Widget _buildModifyAppBar(){
return AppBar(
backgroundColor: appBarColor,title: Text("MODIFY PROFILE"),);
}
Widget _buildModifyBody(){
double screenHeight = MediaQuery.of(context).size.height;
return Container(
height: screenHeight,children: [
Padding(
// padding: EdgeInsets.symmetric(vertical: defaultPadding,padding: EdgeInsets.all(defaultPadding * 2),child: SingleChildScrollView(
child: Consumer<UserProvider>(
builder: (ctx,user,_){
final List<User> userList = user.userInfoList;
if(user != null && !_isInit){
print("Initialize..");
_formUserData['username'] = userList;
_formUserData['email'] = userList;
_formUserData['imageURL'] = userList;
_formUserData['Address'] = userList;
}
return Form(
key: _formModifyKey,child: Column(
crossAxisAlignment: CrossAxisAlignment.start,children: [
Label(label: "UserName"),// _buildModifyText(),_buildUserNameModify(),// Label(label: "Email"),// _buildUserEmailModify(),// Label(label: "Image URL"),// // _buildUserImageURLModify(),// Label(label: "Address"),// _buildUserAddressModify(),)
);
}
)
)
),_buildModifyForm(),)
);
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: _buildModifyAppBar(),body: _buildModifyBody(),);
}
Widget _buildUserNameModify(){
return Column(
children: <Widget>[
TextFormField(
// controller: SideMenu().userNameTextController,validator: (value){
if(value.isEmpty) {return 'Please enter some text';}
return null;
},onChanged: (value){
_formModifyKey.currentState.validate();
},onSaved: (value){
print("User Edition!!!!!");
setState((){
_formUserData['username'] = value;
// _userName = value;
print(value);
});
print(value);
},SizedBox(height: defaultPadding * 2),);
}
Widget _buildModifyForm(){
return Positioned(
bottom: 0,child: Text("MODIFY",onpressed: () => _submitForm(context)
),);
}
void _submitForm(BuildContext context){
if(!_formModifyKey.currentState.validate()) return;
_formModifyKey.currentState.save();
Provider.of<UserProvider>(context).createuserInfo(user);
print(user.userName);
// print(user.email);
// Provider.of<UserProvider>(context).changeUserInfo(user,_userName,_email,_imageURL,_address);
// print(_userName);
// print(_email);
// print(_imageURL);
// print(_address);
Navigator.of(context).pop();
}
}
解决方法
我认为问题出在您的changeUserInfo。您没有使用参数userModify。要使用它，您应该使用以下内容更改相关部分：
void changeUserInfo(User userModify,String userName,String email,String imageURL,String address){
// userModfiy.userName = userName
// userModfiy.email = email;
// userModfiy.photoURL = imageURL;
// userModfiy.userAddress = address;
// notifyListeners();
// In here!
final int index = _userInfoList.indexWhere((ui) => ui.id == userModify.id);
if(index != 1){
final User modifyUser = User.from(userModify);
modifyUser.userName = userName;
modifyUser.email = email;
modifyUser.photoURL = imageURL;
modifyUser.userAddress = address;
}
notifyListeners();
}