Iphone 如何创建NSPredicate以搜索日历中的事件？

我试图使用下面的谓词来搜索日历中的事件，但得到了以下结果 异常“NSInvalidArgumentException”，原因：“谓词不是使用EKCalendarStore方法创建的”

//[_sender objectAtIndex:0] is Name of the event and [_sender objectAtIndex:1] is location of the event NSPredicate *prediction=[NSPredicate predicateWithFormat:@"(SELF contains[cd] %@)", [NSString stringWithFormat: @"%@%@",[_sender objectAtIndex:0],[_sender objectAtIndex:1]]]; NSArray*events=[eventStore eventsMatchingPredicate:prediction]; //[\u sender objectAtIndex:0]是事件的名称，[\u sender objectAtIndex:1]是事件的位置 NSPredicate*prediction=[NSPredicate predicateWithFormat:@“（自身包含[cd]]@）”，[NSString stringWithFormat:@“%@%@”，[[发送方对象索引：0]，[发送方对象索引：1]]； NSArray*事件=[eventStore eventsMatchingPredicate:prediction]；

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我遵循EventKit编程指南，得到了解决方案

NSPredicate *prediction=[eventStore predicateForEventsWithStartDate:statedate endDate:enddate calendars:[eventStore calendars]]; NSArray*events=[eventStore eventsMatchingPredicate:prediction]; NSPredicate*prediction=[eventStore predicateForEventsWithStartDate:statedate endDate:endDate日历：[eventStore日历]]； NSArray*事件=[eventStore eventsMatchingPredicate:prediction]；

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以下是一个Swift 4.0实现：

import EventKit

let eventStore = EKEventStore()
let datePredicate = eventStore.predicateForEvents(withStart: begin, 
    end: end,
    calendars: eventStore.calendars(for: .event))
let events = eventStore.events(matching: datePredicate)