How do you use GetX in flutter?

pop(result) to close the dialog rather just Navigator. pop(context, result).

Using built-in dialog:

To show an alert, you must have to call showDialog() function, which contains the context and itemBuilder function . The itemBuilder function returns an object of type dialog, the AlertDialog. Now, run the app, it will give the following output. When you click on the button Show Alert, you will get the alert message.

bool barrierDismissible. Whether you can dismiss this route by tapping the modal barrier . The modal barrier is the scrim that is rendered behind each route, which generally prevents the user from interacting with the route below the current route, and normally partially obscures such routes.