Make sure to import dart:async package to start of program to use Timer .
Read moreHow do you run a Timer on flutter?
We will also create a timer variable and create a bool variable countDown is equal to true.
Read moreHow do I keep the screen on in flutter?
import ‘package:wakelock/wakelock. dart’; // To keep the screen on: Wakelock. enable(); // or Wakelock. toggle(on: true); // To let the screen turn off again: Wakelock.
Read moreHow do I get flutter apps to run in the background?
create new Flutter project.
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