Let's suppose your code needs to run a certain function periodically at a certain interval. This recipe shows how you can do this very easily.
Look at the following code of recurring_function.dart:
import'dart:async';
var count = 0;
const TIMEOUT = const Duration(seconds: 5);
const MS = const Duration(milliseconds: 1);
void main() {
// 1. Running a function repeatedly:
const PERIOD = const Duration(seconds:2);
newTimer.periodic(PERIOD, repeatMe);
// 3. Running a function once after some time:
const AFTER70MS = const Duration(milliseconds:70);
new Timer(AFTER70MS, () => print('this was quick!'));
// 4. Running a function asap:
Timer.run(() => print('I ran asap!'));
// 5. Calculating a period and provoking a timeout:
startTimeout(500);
}
repeatMe(Timer t) {
print("I have a repetetive job, and I'm active is ${t.isActive}!");
count++;
// 2. Stop the repetition:
if (count==4 &&t.isActive) {
t.cancel();
...