I have a button on pressed method that does some async task. At the end of this task, I need to redraw the entire widget with new updated arguments. This is my Widget Class.
class UIMain extends StatefulWidget {
final bool loginState;
final String userID;
UIMain({Key key, @required this.loginState, @required this.userID})
: super(key: key);
@override
_UIMainState createState() => _UIMainState();
}
This is the onPressed in the state of this class. The button is located in the drawer.
onPressed: () async {
Navigator.pop(context); // this is being called to close the drawer
singOut().then((value) {
Navigator.pushReplacement(
context,
MaterialPageRoute(
builder: (BuildContext context) =>
UIMain(loginState: false, userID: null,)),
);
});
}
Here is the async task I am performing.
Future singOut() async {
await _auth.signOut();
await _googleSignIn.signOut();
}
I am getting Duplicate GlobalKey detected in widget tree. error. However, the changes are reflected as to what I want.
Also from a different widget.
await googleSignIn().then((result) {
if (result != null) {
print(result);
Navigator.pushReplacement(
context,
MaterialPageRoute(
builder: (BuildContext context) => UIMain(
userID: result,
loginState: true,
)),
);
This throws all kind of errors. The UI isn't rendered as it depends on result, which is getting passed as null. Here is the signInMethod.
Future<String> googleSignIn() async {
if (await _googleSignIn.isSignedIn()) {
_googleSignIn.signInSilently();
} else {
final GoogleSignInAccount googleUser = await _googleSignIn.signIn();
final GoogleSignInAuthentication googleAuth =
await googleUser.authentication;
// get the credentials to (access / id token)
// to sign in via Firebase Authentication
final AuthCredential credential = GoogleAuthProvider.getCredential(
accessToken: googleAuth.accessToken, idToken: googleAuth.idToken);
_auth.signInWithCredential(credential);
}
return _googleSignIn.currentUser.id;
}
I don't think Navigator.pushReplacement is a better way of doing things. Also I understand that these async task takes time. How can I be sure that I get a non null result before redrawing the UIMain() with new parameters. And what other method should I employ to redraw instead of this Navigator.pushReplacement().
