Swift - 使用EventKit获取系统日历事件，添加事件

通过EventKit可以对iOS日历事件进行读取，添加等操作。但网上找到的都是使用Objective-C来编写的。

下面提供一个Swift版的样例，演示如何添加一个事件以及获取所有的事件列表。

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import UIKit import EventKit   class ViewController: UIViewController {           override func viewDidLoad() {         super.viewDidLoad()                   let eventStore:EKEventStore = EKEventStore()                   // 'EKEntityType.Reminder' or 'EKEntityType.Event'         eventStore.requestAccessToEntityType(.Event, completion: {             granted, error in             if (granted) && (error == nil) {                 print("granted \(granted)")                 print("error  \(error)")                                   // 新建一个事件                 let event:EKEvent = EKEvent(eventStore: eventStore)                 event.title = "新增一个测试事件"                 event.startDate = NSDate()                 event.endDate = NSDate()                 event.notes = "这个是备注"                 event.calendar = eventStore.defaultCalendarForNewEvents                                   do{                     try eventStore.saveEvent(event, span: .ThisEvent)                     print("Saved Event")                 }catch{}                                   // 获取所有的事件（前后90天）                 let startDate=NSDate().dateByAddingTimeInterval(-3600*24*90)                 let endDate=NSDate().dateByAddingTimeInterval(3600*24*90)                 let predicate2 = eventStore.predicateForEventsWithStartDate(startDate,                     endDate: endDate, calendars: nil)                                   print("查询范围 开始:\(startDate) 结束:\(endDate)")                 let eV = eventStore.eventsMatchingPredicate(predicate2) as [EKEvent]!                                   if eV != nil {                     for i in eV {                         print("标题  \(i.title)" )                         print("开始时间: \(i.startDate)" )                         print("结束时间: \(i.endDate)" )                     }                 }             }         })     }           override func didReceiveMemoryWarning() {         super.didReceiveMemoryWarning()     } }