is there any way to cancel a dart Future?

Question

In a Dart UI, I have a button [submit] to launch a long async request. The [submit] handler returns a Future. Next, the button [submit] is replaced by a button [cancel] to a

Answer 1

How to cancel Future.delayed

A simple way is to use Timer instead :)

Timer _timer;

void _schedule() {
  _timer = Timer(Duration(seconds: 2), () { 
    print('Do something after delay');
  });
}

@override
void dispose() {
  super.dispose();
  _timer?.cancel();
}