popRoute method

@override Future<bool> popRoute()

Called by the Router when the Router.backButtonDispatcher reports that the operating system is requesting that the current route be popped.

The method should return a boolean Future to indicate whether this delegate handles the request. Returning false will cause the entire app to be popped.

Consider using a SynchronousFuture if the result can be computed synchronously, so that the Router does not need to wait for the next microtask to schedule a build.

Implementation

@override
Future<bool> popRoute() async {
  final NavigatorState? state = _findCurrentNavigator();
  if (state != null) {
    return state.maybePop();
  }
  // This should be the only place where the last GoRoute exit the screen.
  final GoRoute lastRoute = currentConfiguration.last.route;
  if (lastRoute.onExit != null && navigatorKey.currentContext != null) {
    return !(await lastRoute.onExit!(
      navigatorKey.currentContext!,
      currentConfiguration.last
          .buildState(_configuration, currentConfiguration),
    ));
  }
  return false;
}