public static List<DateTime> GetNextDueDate(String repeatFlag, DateTime dueDate, String repeatFrom, DateTime completedTime, String timeZone, int limit)
{
List<DateTime> dueDates = new List<DateTime>();
if (string.IsNullOrEmpty(repeatFlag) || dueDate == null)
{
return dueDates;
}
bool isLunar;
try
{
TickRRule rRule = new TickRRule(repeatFlag);
isLunar = rRule.IsLunarFrequency();
if (IsRepeatFromCompleteTime(repeatFrom, completedTime))
{
// update rRule, We must clear byDay and byMonthDay when the
// task repeat from completedTime.
rRule.SetByDay(new List<IWeekDay>());
rRule.SetByMonthDay(new int[0]);
repeatFlag = rRule.ToTickTickIcal();
}
if (rRule.GetCompletedRepeatCount() >= rRule.GetCount())
{
return dueDates;
}
if (string.IsNullOrEmpty(timeZone))
{
timeZone = NodaTime.DateTimeZoneProviders.Tzdb.GetSystemDefault().Id;
}
DateTimeZone taskTimeZone = DateTimeZoneProviders.Tzdb.GetZoneOrNull(timeZone); //.getTimeZone(timeZone);
// TODO 有问题 阳历
//GregorianCalendar taskCal = new GregorianCalendar(taskTimeZone);
//GregorianCalendar utcCal = new GregorianCalendar(TimeUtils.utcTimezone());
Calendar taskCal = new Calendar();
taskCal.ChangeTimeZone(taskTimeZone.Id);
Calendar utcCal = new Calendar();
utcCal.ChangeTimeZone(DateTimeZoneProviders.Tzdb.GetSystemDefault().Id);
DateTime taskStart = InitRepeatStartDate(repeatFrom, completedTime, dueDate, taskCal);
DateTime utcStart = ConvertDateToUTCDate(taskStart, taskCal, utcCal);
long untilDateTime = GetTimeFromDateValue(rRule.GetUntil());
if (isLunar)
{
//DateTime now = DateTime.UtcNow; // TODO 为什么要这么写？ DateTimeUtils.GetCurrentDate();
////当前时间已经超过截止重复时间，必定没有下个有效的重复时间
//if (isAfterUntilDate(now, untilDateTime))
//{
// return dueDates;
//}
//GregorianCalendar start = new GregorianCalendar();
//start.setTime(dueDate);
//Date next = getNextLunarDueDate(start, rRule);
//int i = 0;
//while (next != null && dueDates.size() < limit && !isAfterUntilDate(next,
// untilDateTime))
//{
// start.setTime(next);
// next = getNextLunarDueDate(start, rRule);
// if (next != null && !now.after(next))
// {
// dueDates.add(next);
// }
// if (i++ > 1000)
// {
// break;
// }
//}
//if (dueDates.isEmpty())
//{
// Log.e(TAG, "Get next due_date error: repeatFlag = " + repeatFlag);
//}
//return dueDates;
}
String rRuleString = rRule.ToIcal();
if (untilDateTime > 0)
{
rRuleString = RemoveKeyValueFromRRule(TickRRule.UNTIL_KEY, rRuleString);
}
// TODO 这是干嘛的。。。
//DateIterator di = DateIteratorFactory.createDateIterator(rRuleString, utcStart, TimeUtils.utcTimezone(), true);
if (Constants.RepeatFromStatus.DEFAULT.Equals(repeatFrom)
|| string.IsNullOrEmpty(repeatFrom))
{
// Repeat from default, next dueDate 不会返回小于Now
DateTime utcNow = ConvertDateToUTCDate(DateTime.UtcNow, taskCal, utcCal);//(DateTimeUtils.getCurrentDate(), taskCal, utcCal);
// TODO advanceTo 是什么，比什么早？
//if (utcNow > utcStart)
//{
// di.advanceTo(utcNow);
//}
}
DateTime next;
int count = 0;
//while (di.hasNext() && dueDates.Count < limit)
//{
// next = ConvertUtcDateToDate(di.next(), taskCal, utcCal);
// if (next > taskStart)
// {
// //得到的下次重复时间已超过截止重复时间，无效
// if (IsAfterUntilDate(next, untilDateTime))
// {
// return dueDates;
// }
// else
// {
// dueDates.Add(next);
// }
// }
// if (count++ > 10000)
// {
// // 对极端的情况跳出来，不要循环了。
// break;
// }
//}
}
catch (Exception e)
{
//Log.e(TAG, "Get next due_date error: repeatFlag = " + repeatFlag, e);
}
return dueDates;
}
/// <summary>
/// 改变重复时间
/// </summary>
/// <param name="repeatTimeEnum"></param>
public void ChangeRepeatTime(int repeatTimeEnum)
{
if (repeatTimeEnum.Equals(TaskRepeatItemEnum.DOES_NOT_REPEAT))
{
return;
}
TickRRule rule = new TickRRule();
//if (rule == null)
//{
// rule = new TickRRule();
// rule.SetInterval(1);
//}
var taskDate = DateTime.UtcNow;
List<IWeekDay> weekdayNums = new List<IWeekDay>();
switch (repeatTimeEnum)
{
case TaskRepeatItemEnum.DOES_NOT_REPEAT:
rule = null;
//mApplication.getAnalyticsInstance().sendRepeatSetEvent(
// AnalyticsConstants.DateSetupParams.LABEL_REPEAT_NO);
//if (!repeatArray.isEmpty())
//{
// if (repeatArray.get(repeatArray.size() - 1).type
// == RepeatSettingsItem.ITEM_TYPE_END_REPEAT)
// {
// repeatArray.get(repeatArray.size() - 1).summary = "";
// }
// if (repeatArray.get(repeatArray.size() - 2).type
// == RepeatSettingsItem.ITEM_TYPE_CUSTOM)
// {
// repeatArray.get(repeatArray.size() - 2).summary = "";
// }
//}
//mSettingsAdapter.notifyDataSetChanged();
break;
case TaskRepeatItemEnum.REPEATS_DAILY:
//mApplication.getAnalyticsInstance().sendRepeatSetEvent(
// AnalyticsConstants.DateSetupParams.LABEL_REPEAT_DAILY);
rule = new TickRRule("RRULE:FREQ=DAILY;INTERVAL=1");
rule.SetInterval(1);
rule.SetFreq(FrequencyType.Daily);
break;
case TaskRepeatItemEnum.REPEATS_EVERY_WEEKDAY:
//mApplication.getAnalyticsInstance().sendRepeatSetEvent(
// AnalyticsConstants.DateSetupParams.LABEL_REPEAT_WEEKDAY);
rule = new TickRRule();
rule.SetInterval(1);
rule.SetFreq(FrequencyType.Weekly);
weekdayNums.Clear();
weekdayNums.Add(new WeekDay(DayOfWeek.Monday, 0));
weekdayNums.Add(new WeekDay(DayOfWeek.Tuesday, 0));
weekdayNums.Add(new WeekDay(DayOfWeek.Wednesday, 0));
weekdayNums.Add(new WeekDay(DayOfWeek.Thursday, 0));
weekdayNums.Add(new WeekDay(DayOfWeek.Friday, 0));
rule.SetByDay(weekdayNums);
break;
case TaskRepeatItemEnum.REPEATS_WEEKLY_ON_DAY:
//mApplication.getAnalyticsInstance().sendRepeatSetEvent(
// AnalyticsConstants.DateSetupParams.LABEL_REPEAT_WEEKLY);
rule = new TickRRule();
rule.SetInterval(1);
rule.SetFreq(FrequencyType.Weekly);
weekdayNums.Clear();
weekdayNums.Add(RepeatUtils.CreateWeekdayNum(taskDate));
rule.SetByDay(weekdayNums);
break;
case TaskRepeatItemEnum.REPEATS_MONTHLY_ON_DAY_COUNT:
//mApplication.getAnalyticsInstance().sendRepeatSetEvent(
// AnalyticsConstants.DateSetupParams.LABEL_REPEAT_MONTHLY_WEEK);
rule = new TickRRule();
rule.SetInterval(1);
rule.SetFreq(FrequencyType.Monthly);
weekdayNums.Clear();
weekdayNums.Add(RepeatUtils.CreateMonthWeekdayNum(taskDate));
rule.SetByDay(weekdayNums);
break;
case TaskRepeatItemEnum.REPEATS_MONTHLY_ON_DAY:
//mApplication.getAnalyticsInstance().sendRepeatSetEvent(
// AnalyticsConstants.DateSetupParams.LABEL_REPEAT_MONTHLY_DAY);
rule = new TickRRule();
rule.SetInterval(1);
rule.SetFreq(FrequencyType.Monthly);
if (DateTimeUtils.IsLastDayOfMonth(taskDate))
{
rule.SetByMonthDay(new int[] { -1 });
}
break;
case TaskRepeatItemEnum.REPEATS_YEARLY:
//mApplication.getAnalyticsInstance().sendRepeatSetEvent(
// AnalyticsConstants.DateSetupParams.LABEL_REPEAT_YEARLY);
rule = new TickRRule();
rule.SetInterval(1);
rule.SetFreq(FrequencyType.Yearly);
rule.SetByMonth(new int[] { taskDate.Month + 1 });
rule.SetByMonthDay(new int[] { taskDate.Day });
break;
case TaskRepeatItemEnum.REPEATS_YEARLY_LUNAR:
//mApplication.getAnalyticsInstance().sendRepeatSetEvent(
// AnalyticsConstants.DateSetupParams.LABEL_REPEAT_YEARLY_LUNAR);
rule = new TickRRule();
rule.SetInterval(1);
rule.SetLunarFrequency(FrequencyType.Yearly);
DateTime selected = taskDate;
// TODO 农历暂时不动。。。
//String time = LunarUtil.SIMPLE_DATE_FORMAT.format(selected);
//LunarEntity lunar = null;
//try
//{
// lunar = LunarUtil.solar2Lunar(time);
//}
//catch (ParseException e)
//{
// e.printStackTrace();
//}
//if (lunar != null)
//{
// rule.setByMonth(new int[] {
// lunar.getMonth()
//});
// if (lunar.getDay() == 30)
// {
// rule.setByMonthDay(new int[] {
// -1
// });
// }
// else
// {
// rule.setByMonthDay(new int[] {
// lunar.getDay()
// });
// }
//}
break;
case TaskRepeatItemEnum.REPEATS_CUSTOM:
// TODO 用户自定义先不做
//new CustomRepeatSetDialog(mActivity, dialogSetRRuleCallback)
// .showCustomRepeatDialog();
break;
case TaskRepeatItemEnum.REPEATS_END:
// TODO 禁用当前的窗体
//if (view.isEnabled())
//{
// new RepeatEndViewController(mActivity, repeatEndCallback).showRepeatEndDialog();
//}
break;
default:
break;
}
// 直接设置的repeat选项中，repeatFrom始终是DEFAULT
if (repeatTimeEnum != TaskRepeatItemEnum.REPEATS_CUSTOM && repeatTimeEnum != TaskRepeatItemEnum.REPEATS_END)
{
// TODO 未实现
//if (!repeatArray.isEmpty())
//{
// if (repeatArray.get(repeatArray.size() - 2).type
// == RepeatSettingsItem.ITEM_TYPE_CUSTOM)
// {
// repeatArray.get(repeatArray.size() - 2).summary = "";
// }
// if (repeatArray.get(repeatArray.size() - 1).type
// == RepeatSettingsItem.ITEM_TYPE_END_REPEAT)
// {
// repeatArray.get(repeatArray.size() - 1).summary = mActivity.getResources()
// .getStringArray(R.array.remind_before_name)[0];
// }
//}
//mRepeatSetHandler.onRepeatSet(rule, Constants.RepeatFromStatus.DEFAULT);
}
//更改选中状态
//if (item.type != RepeatSettingsItem.ITEM_TYPE_END_REPEAT
// && item.type != RepeatSettingsItem.ITEM_TYPE_CUSTOM)
//{
// for (int i = 0; i < repeatArray.size(); i++)
// {
// if (repeatArray.get(i) != null)
// {
// repeatArray.get(i).selected = false;
// }
// }
// item.selected = true;
//}
//mSettingsAdapter.notifyDataSetChanged();
// fqn 修改repeat状态
if (rule == null)
{
this.Tasks.RepeatFlag = string.Empty;
return;
}
this.Tasks.RepeatFlag = rule.ToTickTickIcal();
}