将事件添加到自定义日历会使应用程序崩溃

Question

我正在尝试将活动添加到自定义日历。

获取我在下面使用的日历列表

EKEventStore *eventStore = [[EKEventStore alloc] init];
[eventStore requestAccessToEntityType:EKEntityTypeEvent completion:^(BOOL granted, NSError *error) {
   if(!granted) {
     //error alert
     return;
   }
   NSArray *calendars = [eventStore calendarsForEntityType:EKEntityTypeEvent];
   // List of all calendars
   // Let user to choose a calendar.
}];

为了添加事件，我使用了以下代码

-(void)addEvent:(EventStoreClass *)storeObject
{
    EKEventStore *store = [[EKEventStore alloc] init];

    [store requestAccessToEntityType:EKEntityTypeEvent completion:^(BOOL granted, NSError *error) {
        if (!granted) return;

        EKEvent *event = [EKEvent eventWithEventStore:store];
        [event setTitle:[storeObject eventTitle]];
        [event setStartDate:[storeObject eventStartDate]];
        [event setEndDate:[storeObject eventEndDate]];
        [event setCalendar:[storeObject calendar] ? [storeObject calendar] : [store defaultCalendarForNewEvents]];
        [store saveEvent:event span:EKSpanThisEvent commit:YES error:nil];
    }];
}

现在，当我使用默认日历时，它已成功添加，但当我选择任何其他日历时，应用程序崩溃并在日志中显示

*** -[EKSource retain]: message sent to deallocated instance 0x7f9bddb1bf50

我无法找出确切的问题或出现此问题的线路。任何建议都将不胜感激。

Answer 1

您必须检查该特定日历是否允许您修改它

  if ([storeObject calendar].allowsContentModifications)
    {
      //add event now  
    }

Answer 2

是的。您的商店对象在完成块开始到运行.

之前被释放

最简单的修复方法 - 将商店对象保存为字段：

EKEventStore *store;

-(void)addEvent:(EventStoreClass *)storeObject
{
   store = [[EKEventStore alloc] init];

    [store requestAccessToEntityType:EKEntityTypeEvent completion:^(BOOL granted, NSError *error) {
        if (!granted) return;

        EKEvent *event = [EKEvent eventWithEventStore:store];
        [event setTitle:[storeObject eventTitle]];
        [event setStartDate:[storeObject eventStartDate]];
        [event setEndDate:[storeObject eventEndDate]];
        [event setCalendar:[storeObject calendar] ? [storeObject calendar] : [store defaultCalendarForNewEvents]];
        [store saveEvent:event span:EKSpanThisEvent commit:YES error:nil];
    }];
}

Answer 3

此问题已通过执行以下操作解决。

-(void)addEvent:(EventStoreClass *)storeObject
{
    EKEventStore *store = [[EKEventStore alloc] init];

    [store requestAccessToEntityType:EKEntityTypeEvent completion:^(BOOL granted, NSError *error) {
        if (!granted) return;

        EKEvent *event = [EKEvent eventWithEventStore:store];
        [event setTitle:[storeObject eventTitle]];
        [event setStartDate:[storeObject eventStartDate]];
        [event setEndDate:[storeObject eventEndDate]];

        if([storeObject calendar]) {
            NSArray *calendars = [store calendarsForEntityType:EKEntityTypeEvent];
            __block EKCalendar *calendar;

            [calendars enumerateObjectsUsingBlock:^(EKCalendar *cal, NSUInteger idx, BOOL *stop) {
                if([[cal title] isEqualToString:[[storeObject calendar] title]]) {
                    calendar = cal;
                    *stop = YES;
                }
            }];

            [event setCalendar:calendar];
        }
        else {
            [event setCalendar:[store defaultCalendarForNewEvents]];
        }
        [store saveEvent:event span:EKSpanThisEvent commit:YES error:nil];
    }];
}

问题出在 [storeObject calendar]，因为这个日历是从另一家商店拿来的，我们正在为它分配不同的商店。所以我只是从同一家商店拿了日历，而且很管用。

将事件添加到自定义日历会使应用程序崩溃

Add Event to custom calendar crashed the application

calendar

objective-c

ios

eventkit