关于 ekeventkit：iOS EKEvent Store 循环重新创建 iCloud 日历，不会保存本地。

iOS EKEvent Store recreating iCloud calendars in a loop, won't save local.

我遇到了一个奇怪的问题 EKEventStore、iCloud 和本地日历。如果启用了 iCloud，则会创建日历并将事件保存到您所期望的日历中。如果 iCloud 已关闭并且您尝试保存事件，则没有任何反应，但是设备会继续每 3-5 秒循环创建 iCloud 日历，直到重新打开 iCloud，然后所有这些日历作为副本涌入 iCloud。我使用的代码几乎与此处多次引用的代码以及 Apples Docs 中的代码完全相同。我完全不明白为什么它不起作用，而且一般来说，关于 EKEventStore 的文档似乎很少。

//????????????????????????????????????????????? ??
#pragma mark – 保存事件
//???????????????????????????????????????????????????

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-(void)saveEventWithDate:(NSDate *)startDate endDate:(NSDate *)endDate
{
AppData *theData = [self theAppData];

if([self checkIsDeviceVersionHigherThanRequiredVersion:@"6.0"]) {
[eventStore requestAccessToEntityType:EKEntityTypeEvent completion:^(BOOL granted, NSError *error) { // iOS 6 Support

if (granted){
NSLog(@"Access Granted");
} else {
NSLog(@"Access Not Granted");
}

}];
}

EKEvent *event = [EKEvent eventWithEventStore:eventStore];

NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];

if ([eventStore calendarWithIdentifier:[defaults objectForKey:@"My Calendar"]] != nil) // Calendar Existed
{
event.calendar = [eventStore calendarWithIdentifier:[defaults objectForKey:@"My Calendar"]];
NSLog(@"Calendar Existed");

} else { // Create Calendar

EKSource *theSource = nil;

for (EKSource* src in eventStore.sources) {
if ([src.title isEqualToString:@"iCloud"]) {
theSource = src;
break;
}
if (src.sourceType == EKSourceTypeLocal && theSource==nil) {
theSource = src;
break;
}
}

[self setupCalendarWithSource:theSource withEvent:event];
}

NSLog(@"Type of Event:%@",typeOfEvent);

if ([typeOfEvent isEqualToString:@"Hello"]) {
event.title = [NSString stringWithFormat:@"%@ Hello",[theData.hello_info objectForKey:@"customer_name"]];
event.location = [NSString stringWithFormat:@"Phone #%@",[theData.hello_info objectForKey:@"customer_phone_number"]];
event.notes = [NSString stringWithFormat:@"Hello Issue: %@",[theData.hello_info objectForKey:@"hello_issue"]];
NSLog(@"Hello");
}

event.startDate = startDate;
event.endDate = endDate;
event.allDay = NO;
EKAlarm *alarm = [EKAlarm alarmWithRelativeOffset:-1800]; // Half Hour Before
event.alarms = [NSArray arrayWithObject:alarm];

[eventStore saveEvent:event span:EKSpanThisEvent error:nil];

SAFE_PERFORM_WITH_ARG(_delegate, @selector(wasScheduled), nil);
}

-(void)setupCalendarWithSource:(EKSource *)theSource withEvent:(EKEvent *)event {

NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];

EKCalendar *cal;
cal = [EKCalendar calendarWithEventStore:eventStore];
cal.title = @"My Appointments";
cal.source = theSource;
[eventStore saveCalendar:cal commit:YES error:nil];
NSLog(@"cal id = %@", cal.calendarIdentifier);
NSString *calendar_id = cal.calendarIdentifier;
[defaults setObject:calendar_id forKey:@"My Calendar"];
event.calendar = cal;
}

我不确定你为什么会出现这种行为，但我认为由于禁用了 iCloud，系统无法对其进行查询，然后在唤醒 iCloud 后排队创建请求(但我\\我假设)。

无论如何，我想到的第一个解决方案是以这种方式检查iCloud是否处于活动状态

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EKSource *defaultSource = [eventStore defaultCalendarForNewEvents].source;

if (defaultSource.sourceType == EKSourceTypeCalDAV)
NSLog(@"iCloud Enable");
else
NSLog(@"iCloud Disable");

完成后，您可以将您的活动正确保存到默认来源，然后保持 2 个日历(本地日历和云端日历)彼此同步...

仍然会提示重新激活 iCloud 添加所有本地日历。

另请参阅此处的第二个答案在 iOS 设备上访问以编程方式创建的日历(这是我的想法；))

希望我能帮到你。

编辑：也许没有必要创建第二个日历...尝试将日历的来源从 EKSourceTypeCalDAV 更改为 EKSourceTypeLocal ...不要忘记使用 commit "YES"

保存日历

EDIT2：好的，刚刚测试过...

替换为：

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} else { // Create Calendar

EKSource *theSource = nil;

for (EKSource* src in eventStore.sources) {
if ([src.title isEqualToString:@"iCloud"]) {
theSource = src;
break;
}
if (src.sourceType == EKSourceTypeLocal && theSource==nil) {
theSource = src;
break;
}
}

[self setupCalendarWithSource:theSource withEvent:event];
}

有了这个...

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} else { // Create Calendar

EKSource *theSource = [eventStore defaultCalendarForNewEvents].source;

[self setupCalendarWithSource:theSource withEvent:event];
}

通过这种方式，您将在正确的来源中创建日历(如果用户停用 iCloud 和 CalDAV，则为本地)

然后：

1) 当用户选择停用 iCloud 时，应将日历保留在 iphone 上(而不是删除)，以便您在本地源中拥有云日历

2) 当用户选择激活 iCloud 时，会将他的本地日历与云端合并，然后就可以了！！

我希望这会有所帮助

相关讨论

如果您想找到 iCloud 日历并在 iCloud 被禁用时恢复到本地日历，请使用下面的代码。我已经包含了一些可能会有所帮助的评论：

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for (EKSource *source in eventStore.sources) { //Check for iCloud
if (source.sourceType == EKSourceTypeCalDAV && [source.title isEqualToString:@"iCloud"]) {

NSLog(@"Found iCloud Service."); //Found iCloud

if([source calendarsForEntityType:EKEntityTypeEvent].count>0){ //Check to see if Calendar is enabled on iCloud

NSLog(@"iCloud Calendar is Enabled."); //Calendar is Enabled

if([self saveEventCalendarWithSource:source]){
return YES;
}

}else{

NSLog(@"iCloud Calendar is Disabled."); //Calendar is Disabled

}
}
}

//If we are here it means that we did not find iCloud Source with iCloud Name. Now trying any CalDAV type to see if we can find it

for (EKSource *source in self.reminderStore.sources) { //Check for iCloud
if (source.sourceType == EKSourceTypeCalDAV) {

[self logData:@"Trying to save calendar in EKSourceTypeCalDAV Service."];

if([self saveEventCalendarWithSource:source]){
return YES;
}

}
}

//If we are here it means that we did not find iCloud and that means iCloud is not turned on. Use Local service now.

for (EKSource *source in self.reminderStore.sources) { //Look for Local Source
if (source.sourceType == EKSourceTypeLocal){ //Found Local Source
NSLog(@"Found Local Source.");

if([self saveEventCalendarWithSource:source]){
return YES;
}

}
}

这是保存日历的代码：

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- (Boolean) saveEventCalendarWithSource:(EKSource *)source{

EKCalendar *Calendar = nil;

MyCalendar = [EKCalendar calendarForEntityType:EKEntityTypeEvent eventStore:eventStore];

MyCalendar.title = @"XXX";
MyCalendar.CGColor = [UIColor blueColor].CGColor;

MyCalendar.source = source;

NSError *err;
if([eventStore saveCalendar:MyCalendar commit:YES error:&err]){

if(MyCalendar.calendarIdentifier == nil){

NSLog(@"Could not save Calendar: %@",err);

return FALSE;
}

NSLog(@"Calendar Created. Here's the identifier %@",[MyCalendar calendarIdentifier]);

return TRUE;
}

NSLog(@"Could not create calendar! Reason:%@",err.description);

return FALSE;

}