onAmPmChange method
Change handler for DayPeriod
Implementation
void onAmPmChange(DayPeriod e) {
setState(() {
lastPeriod = time.period;
time = time.setPeriod(e);
});
// If the mode is `onValueChange` then we need to alert
// the listeners that the value changed
if (widget.isOnValueChangeMode) {
onOk();
}
}