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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。

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.
    }
}