Meu flutter app com firebase
Gerar SHA-1 no terminal para firbase android
Go to the project folder in the terminal.
Mac keytool -list -v -keystore ~/.android/debug.keystore -alias androiddebugkey -storepass android -keypass android
Windows keytool -list -v -keystore ".android\debug.keystore" -alias androiddebugkey -storepass android -keypass android
Linux keytool -list -v -keystore ~/.android/debug.keystore -alias androiddebugkey -storepass android -keypass android
acaba com as recomendacoes do firbase e por fim as dependecias que seram instaladas atraves do pubspec.yaml
dependencies:
# [recomendado] se nao da um problema se nao colocar na sua dependencia
firebase_core: ^1.4.0
cloud_firestore: ^2.4.0
firebase_storage: ^10.0.0
SE for a rodar pela primeira vez possa vir dar erro de Dex que quer dizer os codigos java quando compilados geram um arquivo .jar e flutter gera um arquivo .dex e firbase gerar arquivos dex maiores e k ests sao limitado dai da um pau , para solucionar esse trouble precisar settar :
android/app/build.gradle
dependencies {
def multidex_version = "2.0.1"
implementation "androidx.multidex:multidex:$multidex_version"
}
If you aren't using AndroidX, add the following deprecated support library dependency instead:
dependencies {
implementation 'com.android.support:multidex:1.0.3'
}
e no mesmo grandle do android/app/ adicione no defaultConfig que multiDexEnabled=true
android {
defaultConfig {
...
minSdkVersion 15
targetSdkVersion 28
multiDexEnabled true
}
...
}
dependencies {
implementation "androidx.multidex:multidex:2.0.1"
}
Iniciando a estrutura do projecto
[-] feita a criacao da estrutura de Getx_pattern
[+] como vou interagir com cloud_firestore [que eh um banco de dado rectivo do firebase ] [-] primeiro estarei criando uma interface de repository que ele sera capaz de ter todos os metodos para se interagir com firabase [buscar os dados no banco ] e ele 'e um banco reactivo por isso usarei streams
'lib/app/data/repositories/todo_repository_interface.dart'
import 'package:flutfirebase/app/data/models/todo_model.dart';
abstract class IFirestoreTodoRepository {
/** Interface que tera todos os metods para se comunicar com o banco reactivo do firebase [Cloud_firestore]
**/
// como ele 'e um banco de daos reactivo usarei streams na hora de pegas os dados
Stream<List<TodoModel>> getTodos();
}
'lib/app/data/repositories/todo_repository.dart'
import 'package:flutfirebase/app/data/models/todo_model.dart';
import 'todo_repository_interface.dart';
class FireStoreTodoRepository implements IFirestoreTodoRepository {
@override
Stream<List<TodoModel>> getTodos() {
// TODO: implement getTodos
throw UnimplementedError();
}
}
'TodoModel
o modelo tera um metodo factory que alem fromJson tera um fromDocumets a referir documents do firestore'
import 'package:cloud_firestore/cloud_firestore.dart';
class TodoModel {
String? uid;
String title;
bool checked;
final DocumentReference? reference; //areferencia
TodoModel(
{this.reference, this.uid, required this.title, required this.checked});
factory TodoModel.fromDocumets(
DocumentSnapshot<Map<String, dynamic>> firestore_docus) {
// este firestore_docus aparecera em formato json
// dai que eu acessarei com map
return new TodoModel(
checked: firestore_docus['checked'],
title: firestore_docus['title'],
reference: firestore_docus['reference']!);
}
Map<String, dynamic> toJson() =>
{'title': title, 'reference': reference!, 'checked': checked};
}
return Scaffold(
// appBar: AppBar(
// title: Text('ALL TODOS'),
// ),
resizeToAvoidBottomInset: false,
body: SafeArea(
child: Column(
mainAxisSize: MainAxisSize.min,
crossAxisAlignment: CrossAxisAlignment.stretch,
children: [
Text('Todos Recentes'),
SizedBox(height: 20),
// Spacer(),
ListView.separated(
separatorBuilder: (_, index) => Divider(
color: Colors.grey[800],
),
shrinkWrap: true,
itemCount: 5,
itemBuilder: (ctx, index) {
<!-- Aplicando dissmisble WIgets -->
return Dismissible(
background: Container(
padding: EdgeInsets.only(left: 20),
alignment: Alignment.centerLeft,
color: Colors.redAccent,
child: Icon(
Icons.delete,
color: Colors.grey[200],
),
),
key: Key(index.toString()),
onDismissed: (direction) {
switch (direction) {
case DismissDirection.startToEnd:
{
print('removed');
}
break;
}
},
child: ListTile(
onTap: () {},
leading: Container(
height: 30,
width: 30,
// alignment: Alignment.center,
// padding: EdgeInsets.all(2),
decoration: BoxDecoration(
color: Theme.of(ctx).primaryColor,
shape: BoxShape.circle,
),
child: Icon(
Icons.check,
color: Colors.white,
),
),
title: Text(
'Todo title',
style: TextStyle(
color: Colors.grey[200],
),
),
),
);
})
],
),
),
floatingActionButton: FloatingActionButton.extended(
onPressed: () {
showDialog(
context: context,
barrierDismissible: false,
builder: (_) => SimpleDialog(
contentPadding:
EdgeInsets.symmetric(horizontal: 25, vertical: 20),
backgroundColor: Colors.grey[800],
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(10),
),
titlePadding: EdgeInsets.all(8),
title: Container(
padding: EdgeInsets.only(left: 5),
decoration: BoxDecoration(
color: Theme.of(context).primaryColor.withOpacity(0.4),
borderRadius: BorderRadius.circular(10),
),
child: Row(
children: [
Text(
'Nova Nota',
style: TextStyle(
color: Colors.white54,
),
),
Spacer(),
IconButton(
icon: Icon(Icons.cancel,
color: Theme.of(context).primaryColor),
onPressed: () {
Get.back();
}),
],
),
),
children: [
Divider(),
TextFormField(
controller: controller.title_edit.value,
autofocus: true,
maxLines: 2,
autofillHints: ['saidino', 'hacker', 'claudia', 'Mariamo'],
style:
TextStyle(color: Colors.white, height: 1.5, fontSize: 18),
decoration: InputDecoration(
hintText: 'ex: Programar django ',
hintStyle: TextStyle(
color: Colors.white30,
),
),
),
SizedBox(height: 20),
SizedBox(
height: 30,
width: size.width,
child: TextButton(
style: TextButton.styleFrom(
backgroundColor: Theme.of(context).primaryColor,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(20),
),
),
child: Text(
'Salvar',
style: TextStyle(
color: Colors.white,
fontWeight: FontWeight.w400,
),
),
onPressed: () {},
),
),
],
),
);
},
label: Text('create'),
icon: Icon(Icons.add),
),
class TodoController extends GetxController {
final title_edit = TextEditingController().obs;
TodoRepository repository = TodoRepository();
void saveTodo() {
if (title_edit.value.text.isNotEmpty) {
Get.snackbar(
'Edited',
'${title_edit.value.text}',
backgroundColor: Colors.grey[800],
);
}
}
Future<void> showData() async {
var data = repository.getTodos();
}
}
@override
Widget build(BuildContext context) {
var primaryColor = Theme.of(context).primaryColor;
return Scaffold(
appBar: AppBar(
title: TextField(
controller: controller.titleEditctl,
),
actions: [
IconButton(
onPressed: () => Get.toNamed(AppRoutes.TODO),
icon: Icon(Icons.file_present),
),
],
), body: SafeArea(
child: StreamBuilder(
// stream: FirebaseFirestore.instance.collection('todo').snapshots(),
// como ja criei refencia d todo no homeController entao posso usalo
stream: controller.todoReference.orderBy('title').snapshots(),
builder: (ctx, AsyncSnapshot<QuerySnapshot> snapshot) {
if (!snapshot.hasData)
return Center(child: CircularProgressIndicator.adaptive());
return ListView(
children: snapshot.data!.docs.map((todo) {
return Dismissible(
background: Container(
alignment: Alignment.centerLeft,
decoration: BoxDecoration(color: primaryColor),
child: Icon(
Icons.delete,
color: Colors.grey[800],
),
), key: Key("${todo['title']}"),
onDismissed: (direction) {
controller.todoReference.doc(todo.id).delete();
Get.snackbar('Delecao', 'Deletado com sucesso',
backgroundColor: Colors.white);
},
child: ListTile(
title: Text(
"${todo['title']} + ${todo['checked']}",
style: TextStyle(color: Colors.white30),
), leading: Checkbox(
value:
todo['checked'].toString().trim().toLowerCase() ==
'true'
? true
: false,
// == 'false'? true : false,
//parse(todo['checked']),
onChanged: (v) {
bool todo_checked =
todo['checked'].toString().trim().toLowerCase() ==
'true'
? true
: false;
controller.todoReference
.doc(todo.id)
.update({'checked': !todo_checked})
.then(
(value) => Get.snackbar(
'Updating',
'check updated sucessfull',
backgroundColor: Colors.blueAccent,
),
)
.catchError((error) {
Get.snackbar('Update',
'Erro ao fazer update por favor verifique o database',
backgroundColor: primaryColor);
});
},
),
onLongPress: () {
// Apage ao precionar com alta preesao
},
),
);
}).toList(),
);
}),
), floatingActionButton: FloatingActionButton(
onPressed: () {
if (controller.titleEditctl.text.isNotEmpty) {
controller.todoReference.add({
'title': controller.titleEditctl.text,
'checked': false,
});
}
controller.titleEditctl.clear();
},
child: Text('Add'),
),
);
}
}
ClipPath(
clipper: HomeTopCustomPainter(),
child: Container(
height: size.height * 0.5,
width: double.infinity,
decoration: BoxDecoration(
gradient: LinearGradient(
end: Alignment.bottomLeft,
begin: Alignment.topRight,
colors: [
Color(0xFF3383CD),
Color(0xFF11249F),
])),
child: Column(
children: [
Container(
height: kToolbarHeight,
child: Text('Well come'),
),
Row(
children: [
Padding(
padding: const EdgeInsets.all(20.0),
child: Container(
width: size.width * 0.7,
height: 34,
child: TextField(
style: TextStyle(color: Colors.white),
decoration: InputDecoration(
filled: true,
fillColor: Colors.white24,
suffixIcon: Padding(
padding: EdgeInsets.all(5),
child: Icon(Icons.search),
),
// focusedBorder: InputBorder.none,
border: OutlineInputBorder(
borderSide: BorderSide.none,
borderRadius: BorderRadius.circular(20),
),
),
),
),
),
Expanded(
child: Icon(Icons.scatter_plot_outlined,
color: primaryColor),
),
],
)
],
),
),
),Para amais explicacoes !()[https://www.youtube.com/watch?v=1k-gITZA9CI]
Neste projecto adicionei as dependencias :
# google sign
firebase_auth: ^3.0.1
google_sign_in: ^5.0.5
#Google Icon
font_awesome_flutter: ^9.1.0para tal efeito e isso so sera possivel se adicionar nas configuracoes do porjecto no firebase as duas chaves de sh1 e sh6 que segundo adocumentacao oficial !()[https://developers.google.com/android/guides/client-auth] pode se gerar :
keytool -list -v \
-alias androiddebugkey -keystore ~/.android/debug.keystore
password: android
Certificate fingerprint: SHA1: DA:39:A3:EE:5E:6B:4B:0D:32:55:BF:EF:95:60:18:90:AF:D8:07:09
Alias: AndroidDebugKey
MD5: A5:88:41:04:8D:06:71:6D:FE:33:76:87:AC:AD:19:23
SHA1: A7:89:E5:05:C8:17:A1:22:EA:90:6E:A6:EA:A3:D4:8B:3A:30:AB:18
SHA-256: 05:A2:2C:35:EE:F2:51:23:72:4D:72:67:A5:6C:8C:58:22:2A:00:D6:DB:F6:45:D5:C1:82:D2:80:A4:69:A8:FE
Valid until: Wednesday, August 10, 2044
copie as chaves e cole no projecto do firebase clicando na barra de ingrenage de settings
(configuracoes do projecto> e para baixo tera icon do app e clique em Adicionar impressa digital)#Basic Google e FirebaseAUth
/app_controller.dart
import 'package:firebase_auth/firebase_auth.dart';
import 'package:flutfirebase/app/ui/utils/shared.dart';
import 'package:google_sign_in/google_sign_in.dart';
class AppController extends GetxController {
final googleSignIn = GoogleSignIn();
late GoogleSignInAccount? _user;
Stream get user_auth => FirebaseAuth.instance.authStateChanges();
GoogleSignInAccount? get user => _user;
Future googleLogin() async {
try {
final googleUser = await googleSignIn.signIn();
if (googleUser == null) return;
_user = googleUser;
final googleAuth = await googleUser.authentication;
final credential = GoogleAuthProvider.credential(
accessToken: googleAuth.accessToken,
idToken: googleAuth.idToken,
);
await FirebaseAuth.instance.signInWithCredential(credential);
} catch (e) {
Get.defaultDialog(title: 'Erro no Login', content: Text('$e'));
}
if (_user != null) {
Get.toNamed(AppRoutes.HOME);
}
update();
}
}
# AUth_page
Container(
padding: const EdgeInsets.all(16),
alignment: Alignment.center,
child: ElevatedButton.icon(
style: ElevatedButton.styleFrom(
primary: Colors.white,
onPrimary: Colors.black,
minimumSize: Size(double.infinity, 50)),
label: Text('Use seu email',
style: TextStyle(color: Colors.black)),
icon: FaIcon(FontAwesomeIcons.google, color: Colors.red),
// text: 'Registration',
onPressed: () {
print('LOgging ...');
app_controller.googleLogin();
print('Loged sucess');
}),
),
Container(
padding: const EdgeInsets.all(16),
alignment: Alignment.center,
child: RichText(
text: TextSpan(text: ' Ja Tiveste aqui ?', children: [
TextSpan(
text: 'Entrar',
style: TextStyle(color: Colors.greenAccent))
]),
),
)
INstaciamos a classe User que vem da classse FirebaseAuth.instace.currentUser!
User? user =FirebaseAuth.instance.currentUser;
ou final user =FirebaseAuth.instance.currentUser!;
pagendo foto do usuaio
CircleAvatar(radius:40,backgroundImage:NetWorkImage(user.photoURL!))