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.bindCallbackGuarded(callback)); }