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()         // Do any additional setup after loading the view, typically from a nib.                   var eventStore:EKEventStore = EKEventStore()                   // 'EKEntityTypeReminder' or 'EKEntityTypeEvent'         eventStore.requestAccessToEntityType(EKEntityTypeEvent, completion: {             granted, error in             if (granted) && (error == nil) {                 println("granted \(granted)")                 println("error  \(error)")                                   // 新建一个事件                 var 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                 eventStore.saveEvent(event, span: EKSpanThisEvent, error: nil)                 println("Saved Event")                                   // 获取所有的事件（前后90天）                 var startDate=NSDate().dateByAddingTimeInterval(-3600*24*90)                 var endDate=NSDate().dateByAddingTimeInterval(3600*24*90)                 var predicate2 = eventStore.predicateForEventsWithStartDate(startDate,                     endDate: endDate, calendars: nil)                                   println("查询范围 开始:\(startDate) 结束:\(endDate)")                 var eV = eventStore.eventsMatchingPredicate(predicate2) as [EKEvent]!                                   if eV != nil {                     for i in eV {                         println("标题  \(i.title)" )                         println("开始时间: \(i.startDate)" )                         println("结束时间: \(i.endDate)" )                     }                 }             }         })     }       override func didReceiveMemoryWarning() {         super.didReceiveMemoryWarning()         // Dispose of any resources that can be recreated.     } }