如何创建 NSPredicate 来搜索日历中的事件？

发布于 2024-11-19 13:51:08 字数 458 浏览 3 评论 0原文

我尝试使用以下谓词来搜索日历中的事件，但我得到以下结果异常“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];

原文

I tried to use following predicate to search for events in the Calendar but i'm getting the following
exception 'NSInvalidArgumentException', reason: 'predicate was not created with EKCalendarStore methods'


//[_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];

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踏月而来 2024-11-26 13:51:08

我按照 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];

I followed the EventKit Programming Guide and got the solution.

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

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以往的大感动 2024-11-26 13:51:08

这是一个 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)

Here is a Swift 4.0 implementation:

import EventKit

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

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