我是 Flutter 新手，我已成功从 Azure AD Auth 检索到用户电子邮件和用户名。但我想在主屏幕的文本小部件中显示它。如何将登录类中的用户名发送到主屏幕并显示名称？
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class _SignInState extends State<SignIn> {
MsalMobile msal;
bool isSignedIn = false;
@override
void initState() {
super.initState();
MsalMobile.create('assets/auth_config.json', authority).then((client) {
setState(() {
msal = client;
});
refreshSignedInStatus();
});
}
/// Updates the signed in state
refreshSignedInStatus() {
msal.getSignedIn().then((loggedIn) {
print('refreshing');
setState(() {
isSignedIn = loggedIn;
if(isSignedIn) {
// Your navigation code
Navigator.of(context).pushReplacement(
MaterialPageRoute(
builder: (context) => NavScreen()));
}
});
});
}
/// Signs a user in
handleSignIn() async {
await msal.signIn(null, [SCOPE]).then((result) {
refreshSignedInStatus();
}).catchError((exception) {
if (exception is MsalMobileException) {
logMsalMobileError(exception);
} else {
final ex = exception as Exception;
print('exception occurred');
print(ex.toString());
}
}
);
}
logMsalMobileError(MsalMobileException exception) {
print('${exception.errorCode}: ${exception.message}');
if (exception.innerException != null) {
print(
'inner exception = ${exception.innerException.errorCode}: ${exception.innerException.message}');
}
}
/// Signs a user out.
handleSignOut() async {
try {
print('signing out');
await msal.signOut();
print('signout done');
refreshSignedInStatus();
} on MsalMobileException catch (exception) {
logMsalMobileError(exception);
}
}
/// Gets the current and prior accounts.
handleGetAccount() async {
await msal.getAccount().then((result) {
if (result.currentAccount != null) {
return result.currentAccount.username;
} else {
print('no account found');
}
}).catchError((exception) {
if (exception is MsalMobileException) {
logMsalMobileError(exception);
} else {
print('exception occurred');
}
});
}
class _HomeScreenDesktop extends StatelessWidget {
final SignIn handleGetAccount;
final TrackingScrollController scrollController;
const _HomeScreenDesktop({Key key, this.scrollController, this.handleGetAccount}) : super(key: key);
@override
Widget build(BuildContext context) {
return Row(
children: [
Flexible(
flex: 2,
child: Align(
alignment: Alignment.centerLeft,
child: Padding(
padding: const EdgeInsets.all(12.0),
child: MoreOptionsList(currentUser: currentUser),
),
),
),
const Spacer(),
Container(
height: 1000.0,
width: 600.0,
child: ListView(
controller: scrollController,
children: <Widget>[
SizedBox(
height: 30,
),
Padding(
padding: EdgeInsets.only(left: 16, right: 16),
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
Text(
"Show Retrieved username from azure account",
style: GoogleFonts.openSans(
textStyle: TextStyle(
color: Colors.white,
fontSize: 18,
fontWeight: FontWeight.bold)),
),
SizedBox(
height: 4,
),
],
),
IconButton(
alignment: Alignment.topRight,
icon: Image.asset(
"assets/notification.png",
width: 24,
),
onPressed: () => {},
),
],
),
),
SizedBox(
height: 20,
),
GridDashboardwe()
],
)),
const Spacer(),
Flexible(
flex: 2,
child: Container(
color: Color(0xff392850) ,
),
)
],
);
}
}
/// Gets the current and prior accounts.
handleGetAccount() async {
await msal.getAccount().then((result) {
if (result.currentAccount != null) {
return result.currentAccount.username;
} else {
print('no account found');
}
}).catchError((exception) {
if (exception is MsalMobileException) {
logMsalMobileError(exception);
} else {
print('exception occurred');
}
});
}
最佳答案
您需要通过 SignIn 中的参数传递用户对象类到_HomeScreenDesktop小部件。此外，您应该将主屏幕小部件设为公开而不是私有(private)。在类名前使用下划线表示它是私有(private)的，即使用 HomeScreenDesktop而不是 _HomeScreenDesktop .
还请指定方法的返回类型，这将非常有帮助。
更新 handleGetAccount方法:
Future<dynamic> handleGetAccount() async { // <-- Replace dynamic with type of currentAccount
await msal.getAccount().then((result) {
if (result.currentAccount != null) {
return result.currentAccount;
} else {
print('no account found');
return null;
}
}).catchError((exception) {
if (exception is MsalMobileException) {
logMsalMobileError(exception);
} else {
print('exception occurred');
return null;
}
});
handleGetAccount获取当前登录用户，然后您可以将此用户对象传递给 HomeScreenWidget ，看起来像这样:/// Updates the signed in state
refreshSignedInStatus() {
msal.getSignedIn().then((loggedIn) {
print('refreshing');
setState(() {
isSignedIn = loggedIn;
if(isSignedIn) {
dynamic currentAccount = await handleGetAccount();
Navigator.of(context).pushReplacement(
MaterialPageRoute(
builder: (context) => NavScreen(
currentAccount: currentAccount, // <--- Passing required named parameter "currentAccount" in NavScreen widget.
),
),
);
}
});
});
}
NavScreen小部件也将通过创建构造函数来更新，如下所示:NavScreen({
@required this.currentAccount, // Required currentUser parameter
});
final dynamic currentAccount; // Replace dynamic with the type of currentUser
NavScreen ，我猜你一定是在导航到 HomeScreenDesktop不知何故，但是在执行此操作时，您需要通过 currentAccount反对HomeScreenDesktop & 创建与 NavScreen 中相同的构造函数和参数小部件(像这样):HomeScreenDesktop({
@required this.currentAccount, // Required currentUser parameter
});
final dynamic currentAccount; // Replace dynamic with the type of currentUser
currentAccount导航时的对象。它看起来像这样:
Navigator.of(context).pushReplacement(
MaterialPageRoute(
builder: (context) => HomeScreenDesktop(
currentAccount: currentAccount,
),
),
);
关于 flutter Azure AD 身份验证 : How to display the user email and name retrieved during login to another screen，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/64766470/