Created
September 4, 2019 10:26
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void main() => runApp(AuthCheck()); | |
class AuthCheck extends StatefulWidget { | |
@override | |
_AuthCheckState createState() => _AuthCheckState(); | |
} | |
class _AuthCheckState extends State<AuthCheck> { | |
final FirebaseAuth _firebaseAuth = FirebaseAuth.instance; | |
FirebaseUser user; | |
String token; | |
@override | |
void initState() { | |
super.initState(); | |
checkCurrentUser(); | |
} | |
Future<FirebaseUser> checkCurrentUser() async { | |
try { | |
user = await _firebaseAuth.currentUser(); | |
token = await user.getIdToken(); | |
return user; | |
} catch (e) { | |
print(e); | |
return null; | |
} | |
} | |
@override | |
Widget build(BuildContext context) { | |
return MaterialApp( | |
theme: ThemeData(primarySwatch: Colors.red), | |
home: FutureBuilder<FirebaseUser>( | |
future: checkCurrentUser(), | |
builder: (BuildContext context, AsyncSnapshot<FirebaseUser> snapshot) { | |
switch (snapshot.connectionState) { | |
case ConnectionState.none: | |
case ConnectionState.active: | |
case ConnectionState.waiting: | |
return Scaffold( | |
body: Container( | |
color: Color.fromARGB(255, 244, 194, 87), | |
child: Center( | |
child: CircularProgressIndicator(), | |
), | |
), | |
); | |
case ConnectionState.done: | |
if (snapshot.data != null) | |
return MainApp( | |
token: token, | |
user: user, | |
); | |
return Login(); | |
} | |
return null; | |
}, | |
), | |
); | |
} | |
} |
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