【发布时间】：2020-04-26 14:34:46
【问题描述】：
我对应用程序开发相当陌生，并且在我的代码中遇到一个错误。
import 'package:flutter/material.dart';
import 'package:firebase_auth/firebase_auth.dart';
import 'package:cloud_firestore/cloud_firestore.dart';
import 'main.dart';
void main() => runApp(Signup());
//Stateless: Cannot be changed during runtime
//Can only be called once
class Signup extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
debugShowCheckedModeBanner: false,
theme: ThemeData(
primaryColor: Colors.pink,
),
home: SignUp(title: 'Sign up!'),
);
}
}
class SignUp extends StatefulWidget {
SignUp({Key key, this.title, this.uid}) : super(key: key);
final String title;
final String uid;
@override
_SignUpState createState() => _SignUpState();
}
class _SignUpState extends State<SignUp> {
TextStyle style = TextStyle(fontFamily: 'Montserrat', fontSize: 20.0);
TextEditingController first_entry = new TextEditingController();
TextEditingController last_entry = new TextEditingController();
TextEditingController email_entry = new TextEditingController();
TextEditingController password_entry = new TextEditingController();
PersistentBottomSheetController _sheetController;
bool _loading = false;
@override
Widget build(BuildContext context) {
final FirstName = TextFormField(
controller: first_entry,
validator: (value) {
if(value.isEmpty){
return 'Please enter your first name';
}
return null;
},
obscureText: false,
style: style,
decoration: InputDecoration(
labelText: "First Name",
contentPadding: EdgeInsets.fromLTRB(20.0, 15.0, 20.0, 15.0),
border:
OutlineInputBorder(borderRadius: BorderRadius.circular(32.0))),
);
final LastName = TextFormField(
controller: last_entry,
validator: (value) {
if(value.isEmpty){
return 'Please enter your last name';
}
return null;
},
style: style,
decoration: InputDecoration(
labelText: "Last Name",
contentPadding: EdgeInsets.fromLTRB(20.0, 15.0, 20.0, 15.0),
border:
OutlineInputBorder(borderRadius: BorderRadius.circular(32.0))),
);
final email = TextFormField(
controller: email_entry,
validator: (value) {
if(value.isEmpty){
return 'Please enter your email';
}
return null;
},
style: style,
decoration: InputDecoration(
labelText: "Email",
contentPadding: EdgeInsets.fromLTRB(20.0, 15.0, 20.0, 15.0),
border:
OutlineInputBorder(borderRadius: BorderRadius.circular(32.0))),
);
final pass = TextFormField(
controller: password_entry,
obscureText: true,
validator: (value) {
if(value.isEmpty){
return 'Please enter your password';
}
return null;
},
style: style,
decoration: InputDecoration(
labelText: "Password",
contentPadding: EdgeInsets.fromLTRB(20.0, 15.0, 20.0, 15.0),
border:
OutlineInputBorder(borderRadius: BorderRadius.circular(32.0))),
);
final Signingup = Material(
elevation: 5.0,
borderRadius: BorderRadius.circular(30.0),
color: Color(0xff01A0C7),
child: MaterialButton(
minWidth: MediaQuery.of(context).size.width,
padding: EdgeInsets.fromLTRB(20.0, 15.0, 20.0, 15.0),
onPressed: () async {
print(first_entry.text);
print(last_entry.text);
print(email_entry.text);
try {
FirebaseAuth.instance
.createUserWithEmailAndPassword(
email: email_entry.text,
password: password_entry.text)
.then((authResult) => Firestore.instance
.collection("users")
.document(authResult.user.uid)
.setData({
"uid": authResult.user.uid,
"fname": first_entry.text,
"surname": last_entry.text,
"email": email_entry.text,
})
.then((result) => {
Navigator.pushAndRemoveUntil(
context,
MaterialPageRoute(
builder: (context) => MyHomePage(
title:
first_entry
.text +
"'s Tasks",
uid: authResult.user.uid,
)),
(_) => false),
first_entry.clear(),
last_entry.clear(),
email_entry.clear(),
password_entry.clear(),
}));
setState(() {});
Navigator.push(
context,
MaterialPageRoute(builder: (context) => new MyHomePage()),
);
}
catch (e) {
print('Error while logging in $e'); // #debug
}
},
child: Text("Sign me up!",
textAlign: TextAlign.center,
style: style.copyWith(
color: Colors.white, fontWeight: FontWeight.bold)),
),
);
return Scaffold(
body: SingleChildScrollView(
child: Center(
child: Container(
color: Colors.white,
child: Padding(
padding: const EdgeInsets.all(36.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.center,
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
SizedBox(
height: 235.0,
child: Image.asset(
"images/SignUp.png",
fit: BoxFit.contain,
),
),
FirstName,
SizedBox(height: 25.0),
LastName,
SizedBox(height: 25.0),
email,
SizedBox(height: 25.0),
pass,
SizedBox(height: 39.0),
Signingup,
SizedBox(height: 25.0),
],
),
),
),
),
),
appBar: AppBar(
title: Text(widget?.title ?? ''),
),
bottomNavigationBar: BottomAppBar(
child: Container(
height: 45.0,
color: Colors.pink[100],
),
),
);
}
}每当有“currentUser.uid”时，我得到的错误是“没有为类 'AuthResult' 定义 getter 'uid'”。我使用了来自https://github.com/samsam-026/flutter-example/tree/master/lib 的代码，所以我不确定它为什么不起作用。我已经尝试过 getUid()，但我不确定我是否做得对，因为它仍然给我一个错误。任何提示表示赞赏。谢谢！
【问题讨论】：
标签： firebase flutter dart firebase-authentication