1681987800
Autenticação de telefone Flutter com Firebase
Neste tutorial do Flutter, aprendemos sobre o Flutter Phone Auth com o Firebase. Dados seguros e relevantes só podem ser mostrados para usuários que foram autenticados por um aplicativo móvel. É uma sorte que o Firebase, um serviço de back-end, ofereça autenticação do usuário, bem como uma série de outros serviços de back-end importantes, como o Google Drive. Você precisará vincular o Firebase ao seu aplicativo Flutter se quiser utilizar o Firebase User Authentication Backend Service.
Vamos agora começar.
É possível verificar ou autenticar sua identidade de usuário em vários métodos usando o Firebase Authentication. Isso inclui o uso de seu endereço de e-mail e senha, bem como seu número de telefone. No entanto, o foco deste ensaio está na verificação do celular como meio de confirmar a identidade do usuário. Depois que o código OTP (One Time Password) é enviado ao dispositivo do usuário, o Firebase recupera o código automaticamente ou permite que o usuário o insira manualmente para verificar sua identidade (se a recuperação automática não funcionar em um dispositivo específico).
Ativando o método de login por telefone.
Depois de criar um projeto do Firebase na interface do Firebase e integrá-lo ao Flutter, você deve ativar o método de inscrição por telefone antes de poder usá-lo. Para fazer isso, abra a guia Autenticação no lado esquerdo da interface do Firebase. Ative a verificação de telefone clicando no método de inscrição de configuração.
Abra o arquivo pubspec.yaml e verifique se os plug-ins Firebase Authentication e Firebase Core foram adicionados à lista.
Isso é uma notícia realmente emocionante! Vamos começar discutindo a interface do usuário do programa (IU). O aplicativo só precisaria apresentar duas telas, a Tela de Login e a Tela Inicial, para que o usuário pudesse fazer o login. Uma vez verificada a identidade do usuário, a Tela Inicial será exibida. Quando um usuário faz seu primeiro uso da verificação móvel, o Firebase registra automaticamente esse usuário nos dados de autenticação. No entanto, quando um usuário não faz o primeiro uso da verificação móvel, o Firebase apenas verifica o usuário enviando uma mensagem para o usuário. Isso levanta a questão de onde a tela de registro pode estar localizada. O código para a tela inicial e a tela de login são fornecidos abaixo.
LoginScreen.dart
class LoginScreen extends StatelessWidget {
final _phoneController = TextEditingController();
final _passController = TextEditingController();
//Place A
@override
Widget build(BuildContext context) {
return Scaffold(
body: Container(
padding: EdgeInsets.all(32),
child: Form(
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Text("Login", style: TextStyle(color: Colors.lightBlue, fontSize: 36, fontWeight: FontWeight.w500),),
SizedBox(height: 16,),
TextFormField(
decoration: InputDecoration(
enabledBorder: OutlineInputBorder(
borderRadius: BorderRadius.all(Radius.circular(8)),
borderSide: BorderSide(color: Colors.grey[200])
),
focusedBorder: OutlineInputBorder(
borderRadius: BorderRadius.all(Radius.circular(8)),
borderSide: BorderSide(color: Colors.grey[300])
),
filled: true,
fillColor: Colors.grey[100],
hintText: "Phone Number"
),
controller: _phoneController,
),
SizedBox(height: 16,),
TextFormField(
decoration: InputDecoration(
enabledBorder: OutlineInputBorder(
borderRadius: BorderRadius.all(Radius.circular(8)),
borderSide: BorderSide(color: Colors.grey[200])
),
focusedBorder: OutlineInputBorder(
borderRadius: BorderRadius.all(Radius.circular(8)),
borderSide: BorderSide(color: Colors.grey[300])
),
filled: true,
fillColor: Colors.grey[100],
hintText: "Password"
),
controller: _passController,
),
SizedBox(height: 16,),
Container(
width: double.infinity,
child: FlatButton(
child: Text("Login"),
textColor: Colors.white,
padding: EdgeInsets.all(16),
onPressed: (){
//code for sign in
Place B
},
color: Colors.blue,
),
)
],
),
),
)
);
}
}Tela inicial
import 'package:firebase_auth/firebase_auth.dart';
import 'package:flutter/material.dart';
class HomeScreen extends StatelessWidget {
final FirebaseUser user;
HomeScreen({this.user});
@override
Widget build(BuildContext context) {
return Scaffold(
body: Container(
padding: EdgeInsets.all(32),
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
Text("You are Logged in succesfully", style: TextStyle(color: Colors.lightBlue, fontSize: 32),),
SizedBox(height: 16,),
Text("${user.phoneNumber}", style: TextStyle(color: Colors.grey, ),),
],
),
),
);
}
}Agora que terminamos com o elemento da interface do usuário (IU), podemos ir para o item principal, que é a verificação dos usuários com base nos números de celular que eles fornecem.
Crie um Future que possa ser usado para validar as credenciais do usuário dentro da classe LoginScreen localizada no Place A.
Future registerUser(String mobile, BuildContext context) async{
//code
}Agora vamos começar estabelecendo a instância do Firebase auth que será incluída no Future.
Future registerUser(String mobile, BuildContext context) async{
FirebaseAuth _auth = FirebaseAuth.instance;<br>}Verificar a identidade de um usuário usando seu telefone celular agora é possível graças a um novo recurso oferecido pelo Firebase Authentication chamado verifyPhoneNumber.
Future registerUser(String mobile, BuildContext context) async{
FirebaseAuth _auth = FirebaseAuth.instance;
_auth.verifyPhoneNumber(
phoneNumber: null,
timeout: null,
verificationCompleted: null,
verificationFailed: null,
codeSent: null,
codeAutoRetrievalTimeout: null
);<br>}No VerifyPhoneNumber, o phoneNumber é o número do celular do usuário e o tempo limite é a quantidade de tempo antes que o código de verificação fornecido ao dispositivo expire (em segundos). Assim que a verificação for realizada com sucesso, uma chamada para verficationCompleted será recebida no callback. verificação É possível que a verificação falhe devido a um código ou número de telefone inválido. code Sent é um retorno de chamada que é chamado assim que o código é enviado ao dispositivo. O último retorno de chamada a ser considerado é codeAutoRetrievalTimeout, que é acionado quando o cronômetro para recuperação automática de código expira.
Aqui estão os parâmetros phoneNumber e timeout.
Future registerUser(String mobile, BuildContext context) async{
FirebaseAuth _auth = FirebaseAuth.instance;
_auth.verifyPhoneNumber(
phoneNumber: mobile,
timeout: Duration(seconds: 60),
verificationCompleted: null,
verificationFailed: null,
codeSent: null,
codeAutoRetrievalTimeout: null
);<br>}
Este retorno de chamada só é acionado se a verificação for feita com sucesso usando a recuperação automática, então vamos resolver isso primeiro (sem a necessidade de entrada do usuário).
/...
timeout: Duration(seconds: 60),
verificationCompleted: (AuthCredential authCredential){
//code for signing in
}).catchError((e){
print(e);
});
},
verificationFailed: null,Para entrar, utilize o objeto authCredential que é retornado neste retorno de chamada. Você deve usar o futuro signInWithCredential oferecido pelo Firebase Authentication para fazer login usando authCredential.
//...
timeout: Duration(seconds: 60),
verificationCompleted: (AuthCredential authCredential){
_auth.signInWithCredential(_credential).then((AuthResult result){
Navigator.pushReplacement(context, MaterialPageRoute(
builder: (context) => HomeScreen(result.user)
));
}).catchError((e){
print(e);
});
},
verificationFailed: null,
//...Podemos utilizar a instância de usuário fornecida pela autenticação do Firebase para fazer login usando signInWithCredential e retornar à tela inicial do aplicativo. Como uma etapa adicional, vamos falar sobre como verificar.
Por favor, tente novamente. Assim que a verificação falhar, esse callback será acionado e você receberá o objeto AuthException, que pode ser usado para ver qual é o problema ou para informar o usuário sobre o erro.
//...
verificationFailed: (AuthException authException){
print(authException.message);
},
//...Vamos começar definindo o retorno de chamada para codeSent. Conforme indicado anteriormente, a recuperação automática pode não funcionar corretamente em determinados dispositivos. Portanto, precisamos solicitar manualmente ao usuário que insira o código que ele obteve no dispositivo exibindo algum diálogo em codeSent e, em seguida, precisamos construir manualmente o objeto AuthCredential que recebemos no callback de verificaçãoCompleted do Firebase .
//...
codeSent: (String verificationId, [int forceResendingToken]){
//show dialog to take input from the user
}
//...O ID de verificação emitido pelo Firebase para cada código, que você obtém no codeSent from Firebase, e o OTP Code recebido pelo usuário são necessários para criar o AuthCredential. Como resultado, podemos exibir uma caixa de diálogo para o usuário inserir seu código OTP.
//...
codeSent: (String verificationId, [int forceResendingToken]){
//show dialog to take input from the user
showDialog(
context: context,
barrierDismissible: false,
builder: (context) => AlertDialog(
title: Text("Enter SMS Code"),
content: Column(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
TextField(
controller: _codeController,
),
],
),
actions: <Widget>[
FlatButton(
child: Text("Done"),
textColor: Colors.white,
color: Colors.redAccent,
onPressed: () {
FirebaseAuth auth = FirebaseAuth.instance;
smsCode = _codeController.text.trim();
_credential = PhoneAuthProvider.getCredential(verificationId: verificationId, smsCode: smsCode);
auth.signInWithCredential(_credential).then((AuthResult result){
Navigator.pushReplacement(context, MaterialPageRoute(
builder: (context) => HomeScreen(result.user)
));
}).catchError((e){
print(e);
});
},
)
],
)
);
}
//...Para criar uma AuthCredential usando o código de verificação e a senha de uso único que o usuário obteve, usamos o código abaixo.
PhoneAuthProvider.getCredential(verificationId: verificationId, smsCode: smsCode);
Por fim, especifique o CodeAutoRetrievalTimeout, que é invocado quando a recuperação automática de código fica sem memória. Imprimir uma confirmação de que o tempo de recuperação automática expirou é tudo o que estamos fazendo neste momento.
//...
codeAutoRetrievalTimeout: (String verificationId){
verificationId = verificationId;
print(verificationId);
print("Timeout");
};
//...Nosso Future para registro ou login do usuário foi concluído e agora precisamos chamá-lo em nossa tela de login no local B quando o FlatButton onPressed for pressionado.
//...
Container(
width: double.infinity,
child: FlatButton(
child: Text("Login"),
textColor: Colors.white,
padding: EdgeInsets.all(16),
onPressed: (){
//code for sign in
final mobile = _phoneController.text.trim();
registerUser(mobile, context);
},
color: Colors.blue,
),
)
//...…e assim terminamos!
Essa é apenas uma versão específica para dispositivos móveis da funcionalidade .NET subjacente da Autenticação do usuário. Adicionar validação básica e armazenar informações extras como o nome de exibição e a imagem de exibição com o usuário melhoraria a experiência.
Fonte do artigo original em: https://instaflutter.com
What is GEEK
Buddha Community
1597014000
Google's Flutter 1.20 stable announced with new features - Navoki
Flutter Google cross-platform UI framework has released a new version 1.20 stable.
Flutter is Google’s UI framework to make apps for Android, iOS, Web, Windows, Mac, Linux, and Fuchsia OS. Since the last 2 years, the flutter Framework has already achieved popularity among mobile developers to develop Android and iOS apps. In the last few releases, Flutter also added the support of making web applications and desktop applications.
Last month they introduced the support of the Linux desktop app that can be distributed through Canonical Snap Store(Snapcraft), this enables the developers to publish there Linux desktop app for their users and publish on Snap Store. If you want to learn how to Publish Flutter Desktop app in Snap Store that here is the tutorial.
Flutter 1.20 Framework is built on Google’s made Dart programming language that is a cross-platform language providing native performance, new UI widgets, and other more features for the developer usage.
Here are the few key points of this release:
Performance improvements for Flutter and Dart
In this release, they have got multiple performance improvements in the Dart language itself. A new improvement is to reduce the app size in the release versions of the app. Another performance improvement is to reduce junk in the display of app animation by using the warm-up phase.
If your app is junk information during the first run then the Skia Shading Language shader provides for pre-compilation as part of your app’s build. This can speed it up by more than 2x.
Added a better support of mouse cursors for web and desktop flutter app,. Now many widgets will show cursor on top of them or you can specify the type of supported cursor you want.
Autofill for mobile text fields
Autofill was already supported in native applications now its been added to the Flutter SDK. Now prefilled information stored by your OS can be used for autofill in the application. This feature will be available soon on the flutter web.
A new widget for interaction
InteractiveViewer is a new widget design for common interactions in your app like pan, zoom drag and drop for resizing the widget. Informations on this you can check more on this API documentation where you can try this widget on the DartPad. In this release, drag-drop has more features added like you can know precisely where the drop happened and get the position.
Updated Material Slider, RangeSlider, TimePicker, and DatePicker
In this new release, there are many pre-existing widgets that were updated to match the latest material guidelines, these updates include better interaction with Slider and RangeSlider, DatePicker with support for date range and time picker with the new style.
New pubspec.yaml format
Other than these widget updates there is some update within the project also like in pubspec.yaml file format. If you are a flutter plugin publisher then your old pubspec.yaml is no longer supported to publish a plugin as the older format does not specify for which platform plugin you are making. All existing plugin will continue to work with flutter apps but you should make a plugin update as soon as possible.
Preview of embedded Dart DevTools in Visual Studio Code
Visual Studio code flutter extension got an update in this release. You get a preview of new features where you can analyze that Dev tools in your coding workspace. Enable this feature in your vs code by _dart.previewEmbeddedDevTools_setting. Dart DevTools menu you can choose your favorite page embed on your code workspace.
Network tracking
The updated the Dev tools comes with the network page that enables network profiling. You can track the timings and other information like status and content type of your** network calls** within your app. You can also monitor gRPC traffic.
Generate type-safe platform channels for platform interop
Pigeon is a command-line tool that will generate types of safe platform channels without adding additional dependencies. With this instead of manually matching method strings on platform channel and serializing arguments, you can invoke native class and pass nonprimitive data objects by directly calling the Dartmethod.
There is still a long list of updates in the new version of Flutter 1.2 that we cannot cover in this blog. You can get more details you can visit the official site to know more. Also, you can subscribe to the Navoki newsletter to get updates on these features and upcoming new updates and lessons. In upcoming new versions, we might see more new features and improvements.
You can get more free Flutter tutorials you can follow these courses:
- Setup Flutter Desktop on Windows, Linux, MacOS using VSCode and Build – Flutter Tutorial
- Flutter Desktop Linux app | Build and Publish on Snapcraft Store
- Firebase Local Emulator Suite in Flutter
#dart #developers #flutter #app developed #dart devtools in visual studio code #firebase local emulator suite in flutter #flutter autofill #flutter date picker #flutter desktop linux app build and publish on snapcraft store #flutter pigeon #flutter range slider #flutter slider #flutter time picker #flutter tutorial #flutter widget #google flutter #linux #navoki #pubspec format #setup flutter desktop on windows
1598396940
What is Flutter and why you should learn it?
Flutter is an open-source UI toolkit for mobile developers, so they can use it to build native-looking** Android and iOS** applications from the same code base for both platforms. Flutter is also working to make Flutter apps for Web, PWA (progressive Web-App) and Desktop platform (Windows,macOS,Linux).
Flutter was officially released in December 2018. Since then, it has gone a much stronger flutter community.
There has been much increase in flutter developers, flutter packages, youtube tutorials, blogs, flutter examples apps, official and private events, and more. Flutter is now on top software repos based and trending on GitHub.
Flutter meaning?
What is Flutter? this question comes to many new developer’s mind.
Flutter means flying wings quickly, and lightly but obviously, this doesn’t apply in our SDK.
So Flutter was one of the companies that were acquired by **Google **for around $40 million. That company was based on providing gesture detection and recognition from a standard webcam. But later when the Flutter was going to release in alpha version for developer it’s name was Sky, but since Google already owned Flutter name, so they rename it to Flutter.
Where Flutter is used?
Flutter is used in many startup companies nowadays, and even some MNCs are also adopting Flutter as a mobile development framework. Many top famous companies are using their apps in Flutter. Some of them here are
Dream11
NuBank
Reflectly app
Abbey Road Studios
and many more other apps. Mobile development companies also adopted Flutter as a service for their clients. Even I was one of them who developed flutter apps as a freelancer and later as an IT company for mobile apps.
#dart #flutter #uncategorized #flutter framework #flutter jobs #flutter language #flutter meaning #flutter meaning in hindi #google flutter #how does flutter work #what is flutter
1644991598
The Ultimate Guide To Tik Tok Clone App With Firebase - Ep 2
The Ultimate Guide To Tik Tok Clone App With Firebase - Ep 2
In this video, I'm going to show you how to make a Cool Tik Tok App a new Instagram using Flutter,firebase and visual studio code.
In this tutorial, you will learn how to Upload a Profile Pic to Firestore Data Storage.
🚀 Nice, clean and modern TikTok Clone #App #UI made in #Flutter⚠️
Starter Project : https://github.com/Punithraaj/Flutter_Tik_Tok_Clone_App/tree/Episode1
► Timestamps
0:00 Intro 0:20
Upload Profile Screen
16:35 Image Picker
20:06 Image Cropper
24:25 Firestore Data Storage Configuration.
⚠️ IMPORTANT: If you want to learn, I strongly advise you to watch the video at a slow speed and try to follow the code and understand what is done, without having to copy the code, and then download it from GitHub.
► Social Media
GitHub: https://github.com/Punithraaj/Flutter_Tik_Tok_Clone_App.git
LinkedIn: https://www.linkedin.com/in/roaring-r...
Twitter: https://twitter.com/roaringraaj
Facebook: https://www.facebook.com/flutterdartacademy
► Previous Episode : https://youtu.be/QnL3fr-XpC4
► Playlist: https://youtube.com/playlist?list=PL6vcAuTKAaYe_9KQRsxTsFFSx78g1OluK
I hope you liked it, and don't forget to like,comment, subscribe, share this video with your friends, and star the repository on GitHub!
⭐️ Thanks for watching the video and for more updates don't forget to click on the notification.
⭐️Please comment your suggestion for my improvement.
⭐️Remember to like, subscribe, share this video, and star the repo on Github :)
Hope you enjoyed this video!
If you loved it, you can Buy me a coffee : https://www.buymeacoffee.com/roaringraaj
LIKE & SHARE & ACTIVATE THE BELL Thanks For Watching :-)
https://youtu.be/F_GgZVD4sDk
#flutter tutorial - tiktok clone with firebase #flutter challenge @tiktokclone #fluttertutorial firebase #flutter firebase #flutter pageview #morioh #flutter
1640672627
Flutter Hotel Booking UI - Book your Stay At A New Hotel With Flutter - Ep1
https://youtu.be/-tHUmjIkGJ4
Flutter Hotel Booking UI - Book your Stay At A New Hotel With Flutter - Ep1
#flutter #fluttertravelapp #hotelbookingui #flutter ui design
In this video, I'm going to show you how to make a Cool Hotel Booking App using Flutter and visual studio code.
In this tutorial, you will learn how to create a Splash Screen and Introduction Screen, how to implement a SmoothPageIndicator in Flutter.
🚀 Nice, clean and modern Hotel Booking #App #UI made in #Flutter
⚠️ IMPORTANT: If you want to learn, I strongly advise you to watch the video at a slow speed and try to follow the code and understand what is done, without having to copy the code, and then download it from GitHub.
► Social Media
GitHub: https://github.com/Punithraaj
LinkedIn: https://www.linkedin.com/in/roaring-r...
Twitter: https://twitter.com/roaringraaj
Facebook: https://www.facebook.com/flutterdartacademy
I hope you liked it, and don't forget to like,comment, subscribe, share this video with your friends, and star the repository on GitHub!
⭐️ Thanks for watching the video and for more updates don't forget to click on the notification.⭐️Please comment your suggestion for my improvement. ⭐️Remember to like, subscribe, share this video, and star the repo on Github :)Hope you enjoyed this video! If you loved it, you can Buy me a coffee : https://www.buymeacoffee.com/roaringraaj
#flutter riverpod #flutter travel app #appointment app flutter #morioh
1627200000
Firebase Authentication in Flutter | Flutter Firebase - Part 2 | Google Auth
Firebase Authentication in Flutter | Flutter Firebase - Part 2 | Google Authentication | #FlutterStudio
#google auth #flutter #firebase #flutter firebase #firebase authentication