updateSecondIndex method
更新第二列index
Implementation
@override
void updateSecondIndex(int index) {
super.updateSecondIndex(index);
int minMinute = _minMinuteOfCurrentHour();
int destMinute = minMinute + index;
DateTime dateTime = currentTime.isUtc ? DateTime.utc(0) : DateTime(0);
dateTime = dateTime.add(Duration(
hours: currentTime.hour,
minutes: destMinute,
seconds: currentTime.second));
//min/max check
_checkTime(dateTime);
_fillSecondList();
int minSecond = _minSecondOfCurrentMinute();
thirdIndex = currentTime.second - minSecond;
}