中的事件FSCalendar
是通过 a 提供的DataSource
,很像其他基于数据源的控件(即UITableView
)。
此示例子类FSCalendarDataSource
并添加了事件日期的硬编码列表(通常您将通过 SQLite、Realm 等设置/检索这些日期...)
public class CalendarDataSource : FSCalendarDataSource
{
NSCalendarUnit calenderUnits = NSCalendarUnit.Year | NSCalendarUnit.Month | NSCalendarUnit.Day;
NSCalendar calendar = new NSCalendar(NSCalendarType.Gregorian);
List<NSDate> events;
public CalendarDataSource()
{
events = new List<NSDate>();
events.Add(NSDate.Now);
events.Add(calendar.DateByAddingUnit(NSCalendarUnit.Day, 3, NSDate.Now, NSCalendarOptions.None));
events.Add(calendar.DateByAddingUnit(NSCalendarUnit.Day, 5, NSDate.Now, NSCalendarOptions.None));
events.Add(calendar.DateByAddingUnit(NSCalendarUnit.Day, 7, NSDate.Now, NSCalendarOptions.None));
events.Add(calendar.DateByAddingUnit(NSCalendarUnit.Day, 9, NSDate.Now, NSCalendarOptions.None));
}
bool SameDate(NSDate date1, NSDate date2)
{
return NSComparisonResult.Same == calendar.CompareDate(date1, date2, calenderUnits);
}
[Export("calendar:hasEventForDate:")]
public override bool HasEventForDate(FSCalendar calendar, NSDate date)
{
return events.Any((NSDate eventDate) => (SameDate(eventDate, date)));
}
public override nint NumberOfEventsForDate(FSCalendar calendar, NSDate date)
{
return events.Any((NSDate eventDate) => (SameDate(eventDate, date))) ? 1 : 0;
}
}
然后实例化数据源并将其分配给您的日历实例:
calender = new FSCalendar
{
Frame = View.Frame,
DataSource = new CalendarDataSource()
};