Flutter remove all routes

I want to develop a logout button that will send me to the log in route and remove all other routes from the Navigator. The documentation doesn't seem to explain how to make a RoutePredicate or have any sort of removeAll function.

I was able to accomplish this with the following code:

Navigator.of(context)
    .pushNamedAndRemoveUntil('/login', (Route<dynamic> route) => false);

The secret here is using a RoutePredicate that always returns false (Route<dynamic> route) => false. In this situation it removes all of the routes except for the new /login route I pushed.

i can done with the following code snippet :

 Navigator.of(context).pushAndRemoveUntil(MaterialPageRoute(builder: (context) =>
    LoginScreen()), (Route<dynamic> route) => false),

if you want to remove all the route below the pushed route, RoutePredicate always return false, e.g (Route route) => false.

Another alternative is popUntil()

Navigator.of(context).popUntil(ModalRoute.withName('/root'));

This will pop all routes off until you are back at the named route.

Another solution is to use pushAndRemoveUntil(). To remove all other routes use ModalRoute.withName('/')

Navigator.pushAndRemoveUntil(
    context,   
    MaterialPageRoute(builder: (BuildContext context) => Login()), 
    ModalRoute.withName('/')
);

Reference: https://api.flutter.dev/flutter/widgets/NavigatorState/pushAndRemoveUntil.html