Creates a new timer.
The callback
function is invoked after the given duration
.
Source
factory Timer(Duration duration, void callback()) {
if (Zone.current == Zone.ROOT) {
// No need to bind the callback. We know that the root's timer will
// be invoked in the root zone.
return Zone.current.createTimer(duration, callback);
}
return Zone.current.createTimer(
duration, Zone.current.bindCallback(callback, runGuarded: true));
}