在我颤抖的应用程序中，用户使用手机登录。因此，当用户再次登录并保留其详细信息时，如何将用户ID存储在Cloud Firestore中并保存帐户？ （我使用共享的首选项来检查用户是否已登录）
如果需要，这是我的代码。
import 'package:country_code_picker/country_code_picker.dart';
import 'package:demo/Firebase/auth.dart';
import 'package:firebase_auth/firebase_auth.dart';
import 'package:flutter/material.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'BottomBarPages/home.dart';
class SignIn extends StatefulWidget {
@override
_SignInState createState() => _SignInState();
}
class _SignInState extends State<SignIn> {
TextEditingController phoneController = new TextEditingController();
String phoneNumber = "";
SharedPreferences logindata;
bool newuser;
bool shower = false;
String smsCode;
String verificationCode;
@override
void initState() {
// TODO: implement initState
super.initState();
check_if_already_login();
}
void check_if_already_login() async {
logindata = await SharedPreferences.getInstance();
newuser = (logindata.getBool('login') ?? true);
print(newuser);
if (newuser == false) {
Navigator.pushReplacement(
context, new MaterialPageRoute(builder: (context) => Home()));
}
}
@override
void dispose() {
// Clean up the controller when the widget is disposed.
phoneController.dispose();
super.dispose();
}
void _onCountryChange(CountryCode countryCode) {
this.phoneNumber = countryCode.toString();
print("New Country selected: " + countryCode.toString());
}
void check() {
final myPhone = this.phoneNumber + phoneController.text;
print("Full Text: " + myPhone);
}
Future<void> man() async{
}
Future<void> submit() async {
final myPhone = this.phoneNumber + phoneController.text;
final PhoneVerificationCompleted verificationCompleted =
(AuthCredential credential) {
};
final PhoneVerificationFailed verificationFailed =
(AuthException exception) {};
final PhoneCodeSent phoneCodeSent = (String verId, [int forceCodeResend]) {
this.verificationCode = verId;
smsCodeDialog(context).then((value) => print("signed"));
};
final PhoneCodeAutoRetrievalTimeout autoRetrievalTimeout = (String verId) {
this.verificationCode = verId;
};
await FirebaseAuth.instance.verifyPhoneNumber(
phoneNumber: myPhone,
timeout: const Duration(seconds: 5),
verificationCompleted: verificationCompleted,
verificationFailed: verificationFailed,
codeSent: phoneCodeSent,
codeAutoRetrievalTimeout: autoRetrievalTimeout);
}
Future<bool> smsCodeDialog(BuildContext context) {
return showDialog(
context: context,
barrierDismissible: false,
builder: (BuildContext context) {
return AlertDialog(
title: Text(
'Enter Code',
style: TextStyle(color: Colors.lightGreen, fontSize: 24),
),
content: TextField(
keyboardType: TextInputType.number,
onChanged: (Value) {
smsCode = Value;
},
),
contentPadding: EdgeInsets.all(10),
actions: [
FlatButton(
onPressed: () {
String phone = phoneController.text;
if (phone != '') {
print('Successfull');
logindata.setBool('login', false);
logindata.setString('username', phone);
Navigator.push(context,
MaterialPageRoute(builder: (context) => Home()));
}
else{
Navigator.of(context).pop();
signIn();
}
// FirebaseAuth.instance.currentUser().then((user) {
// if (user != null) {
// Navigator.of(context).pop();
// Navigator.push(context,
// MaterialPageRoute(builder: (context) => Home()));
// } else {
// Navigator.of(context).pop();
// signIn();
// }
// });
},
child: Text(
'Verify',
style: TextStyle(fontSize: 20, color: Colors.lightGreen),
))
],
);
});
// CircularProgressIndicator(
// valueColor: new AlwaysStoppedAnimation<Color>(Colors.lightGreen),
// value: 0.25,
// );
}
signIn() {
AuthCredential phoneAuthCredential = PhoneAuthProvider.getCredential(
verificationId: verificationCode, smsCode: smsCode);
FirebaseAuth.instance
.signInWithCredential(phoneAuthCredential)
.then((user) => Navigator.push(
context, MaterialPageRoute(builder: (context) => Home())))
.catchError((e) => print(e));
}
@override
Widget build(BuildContext context) {
return GestureDetector(
onTap: () {
FocusScopeNode currentFocus = FocusScope.of(context);
if (!currentFocus.hasPrimaryFocus) {
currentFocus.unfocus();
}
},
child: Scaffold(
body: Column(
//mainAxisAlignment: MainAxisAlignment.start,
children: [
Expanded(
flex: 1,
child: Container(
height: MediaQuery.of(context).size.height,
decoration: BoxDecoration(
gradient: LinearGradient(
begin: Alignment.topLeft,
end: Alignment.bottomRight,
stops: [0.1, 0.3, 1.0],
colors: [
Colors.lightGreen[300],
Colors.white,
Colors.lightGreen[50]
],
),
),
child: Padding(
padding: const EdgeInsets.symmetric(vertical: 15),
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
SizedBox(
height: 150,
child: Image.asset('images/phone.png'),
),
SizedBox(
height: 20,
),
Padding(
padding: const EdgeInsets.symmetric(horizontal: 20),
child: Container(
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(50),
border: Border.all(color: Colors.lightGreen)),
width: double.infinity,
height: 40,
child: Padding(
padding: const EdgeInsets.symmetric(horizontal: 30),
child: Row(
// crossAxisAlignment: CrossAxisAlignment.start,
//mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: [
CountryCodePicker(
dialogTextStyle: TextStyle(fontSize: 20),
onChanged: _onCountryChange,
initialSelection: 'US',
favorite: ['+251', 'ET'],
),
Padding(
padding: const EdgeInsets.only(bottom: 10),
child: SizedBox(
width: 150,
child: TextFormField(
controller: phoneController,
keyboardType: TextInputType.phone,
decoration: InputDecoration(
border: InputBorder.none,
),
),
),
),
],
),
),
),
),
SizedBox(
height: 20,
),
MaterialButton(
onPressed: submit,
minWidth: MediaQuery.of(context).size.width - 80,
height: 45,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(20)),
color: Colors.lightGreen,
splashColor: Colors.green,
child: Text(
"Confirm",
style: TextStyle(color: Colors.white, fontSize: 18),
),
),
Padding(
padding:
EdgeInsets.symmetric(vertical: 14, horizontal: 64),
child: Text(
"you'll receive a 6 digit code click Confirm to verify",
textAlign: TextAlign.center,
style: TextStyle(
fontSize: 22,
color: Colors.lightGreen,
),
),
),
],
),
),
),
),
],
),
),
);
}
}
帮助我了解如何存储用户信息。
答案 0 :(得分：1)
我从未使用过电话号码登录，但是我通常是这样进行的：
首先，我让用户登录，然后获取其uid。它应该随登录后提供的User对象一起提供。
在Firestore内部，我以前创建了一个集合“ UserData”。
当获得用户的uid时，我检查“ UserData”中是否已经有文档。
如果没有，那么我将继续创建文档并保存用户信息。
如果该文档已经存在，我会读取用户信息。
编辑：
以下是有关SignIn方法的所有文档：Here
用户登录后，您必须使用Firestore，以便存储以某种方式收集的用户信息。
以下是Firestore文档：Here
现在，您需要了解这是否是用户首次登录。这取决于您。 当您获得此信息后：
如果这是用户第一次登录，则将信息直接添加到数据库中。这是一个示例（请勿复制和粘贴此代码，因为正如我所说，流程很大程度上取决于您的应用程序代码）。
CollectionReference users = FirebaseFirestore.instance.collection('users');
users.add({
'full_name': fullName, // John Doe
'company': company, // Stokes and Sons
'age': age // 42
})
.then((value) => print("User Added"))
.catchError((error) => print("Failed to add user: $error"));
现在，每次“老”用户登录时，我都会使用get检索数据：
CollectionReference users = FirebaseFirestore.instance.collection('users');
users.doc(documentId).get()