iphone - 如何创建 NSPredicate 来搜索日历中的事件？

Question

我尝试使用以下谓词来搜索日历中的事件，但我得到以下信息 异常 'NSInvalidArgumentException'，原因:'谓词不是用 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];

Answer 1

我遵循了 EventKit 编程指南并得到了解决方案。

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