XCode：为什么我的活动未被添加到日历中？

Question

我有下面的代码添加到我的应用程序：

NSDate * selected = [DatePicker date]; 
NSString * date = [selected description]; 

NSDateComponents *components = [[NSCalendar currentCalendar] components:NSDayCalendarUnit 
                   fromDate:DatePicker.date]; 

CalLabel1.text = [NSString stringWithFormat:@"%d", [components day]]; 

EKEventStore *store = [[EKEventStore alloc] init]; 

EKEvent *event = [EKEvent eventWithEventStore:store]; 
event.title = @"Test Event"; 
//required 
event.startDate = [DatePicker date]; 
event.endDate = [DatePicker date]; 
event.calendar = store.defaultCalendarForNewEvents; 
//end 

NSError *err; 
[store saveEvent:event span:EKSpanThisEvent error:&err]; 

这是为什么不添加任何东西到了iOS日历吗？

谢谢。

Answer 1

您的活动需要有效的时间范围才能保存。试试这个

event.startDate = selected; 
event.endDate = [selected dateByAddingTimeInterval:30*60]; //30 minutes for example