How do I remove GetX controller Flutter?

Move Get. put from being a field of MainScreen to inside its build() method . The Controller can then be disposed when MainScreen is popped.

While using the Get package in your Flutter project, sometimes you might need to remove Get Controller manually. In order to do so, you can simply call Get. delete function .

Get centralizes the main resources for development (State, dependency and route management), allowing you to add a single package to your pubspec, and start working . After a Flutter update, the only thing you need to do is update the Get dependency, and get to work. Get also resolves compatibility issues.