Flutter | Getting Firebase Email Link Login Data - flutter

Question

I have difficulty implementing the Email Link login with Firebase.
I send the email link using:
_firebaseAuth.sendSignInLinkToEmail(
email: email,
actionCodeSettings: ActionCodeSettings(
url: 'https://subdomain.example.com/user-auth', //<subdomain.example.com> = my real domain
handleCodeInApp: true,
androidInstallApp: true,
androidPackageName: 'com.example.app',
),
);
Email is sent and when clicking I open the link using the DynamicLink package:
void _handleDynamicLinks() {
FirebaseDynamicLinks.instance.onLink(onSuccess: _onSuccess);
}
Future<dynamic> _onSuccess(PendingDynamicLinkData data) async {
print('---onLink---');
// How to pass signIn link to `isSignInWithEmailLink` and `signInWithEmailLink` ???
// data.link returns `https://subdomain.example.com/user-auth` which is not the complete link
}
Every method I call on PendingDynamicLinkData data doesn't return the full dynamic link and isSignInWithEmailLink returns false!

Answer 1

Try this in your _handleDynamicLink function.
try {
FirebaseDynamicLinks.instance.onLink.listen((dynamicLink) {
final Uri? deepLink = dynamicLink.link;
if (deepLink != null) {
emailLinkService.handleLink(deepLink, _emailController.text);
FirebaseDynamicLinks.instance.onLink.listen((dynamicLink) {
final Uri? deepLink = dynamicLink.link;
emailLinkService.handleLink(deepLink!, _emailController.text);
}, onError: (e) async {
print(e.message);
});
}
}, onError: (e) async {
print(e.message);
});
final PendingDynamicLinkData? data =
await FirebaseDynamicLinks.instance.getInitialLink();
final Uri? deepLink = data?.link;
print('deepLink :: $deepLink');
} catch (e) {
// you can print this error as well
}
And check if your url is the same as here:
And also add the Dynamic link as your custom Authorised domain like this:
Here is the handleLink method:
class EmailLinkService {
final FirebaseAuth _auth = FirebaseAuth.instance;
Future<void> signInWithEmailAndLink(
{required String userEmail}) async {
var _userEmail = userEmail;
var acs = ActionCodeSettings(
url: Constants.firebaseProjectURL,
handleCodeInApp: true,
iOSBundleId: 'com.example....',
androidPackageName: 'com.example....',
try {
return await _auth
.sendSignInLinkToEmail(email: _userEmail, actionCodeSettings: acs);
} on FirebaseAuthException catch (e) {
}
void handleLink(Uri link, userEmail) async {
if (link != null) {
final UserCredential user =
await FirebaseAuth.instance.signInWithEmailLink(
email: userEmail,
emailLink: link.toString(),
);
} else {
print(" link is null");
}
}
}