在Apple的EventKit中,每个日历都可以具有用户可定义的颜色,也可以在EKCalendar实例上以对其进行访问EKCalendar.color
。如何从单个事件(而不是日历)访问该颜色?从EKEvent实例到该事件所属的EKCalendar是否有任何反向引用?
例如,我有一个日历列表,并按开始和结束日期获取事件。在结果事件数组中,似乎所有回答“单个事件从哪个日历丢失”问题的信息都丢失了。
import EventKit
let eventStore = EKEventStore()
let calendars: [EKCalendar] = getCalendars() // get some calendars here
let d = (start: Date(), end: Date().addingTimeInterval(3600*5)) // [now, now+5h]
let predicate = eventStore.predicateForEvents(withStart: d.start, end: d.end, calendars: calendars)
let events = eventStore.events(matching: predicate) // fetch the events
for event in events { // iterate over all events from calendars within [now, now+5h]
// ?? how to get the color of the calendar of event? or
// ?? how to get the EKCalendar instance event is from?
}
它看起来像EKEvent是的子类EKCalendarItem。该EKCalendarItem
包含的属性,calendar
。
话虽如此,这是问题的答案
...
for event in events { // iterate over all events from calendars within [now, now+5h]
// ?? how to get the color of the calendar of
let color = event.calendar.color
// ?? how to get the EKCalendar instance event is from?
let calendar = event.calendar
}
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