问题
I have value like
createdate = "2013-09-24 04:29:30";
I have to set a reminder on this time .I am using local notification to set the reminder but i am not sure how to remove it after it occurs and also how to invoke it again after two minutes of the reminder time.
Thanks in advance.
EKEventStore *eventStore = [[EKEventStore alloc]init];
EKEvent *event = [EKEvent eventWithEventStore:eventStore];
[event setCalendar:[eventStore defaultCalendarForNewEvents]];
//no need to fill all fill which one u want to set
event.title =@"eventTitle";
event.location = @"eventLocation";
event.notes = @"eventNote";
event.startDate = datePicker.date; //set date
event.URL = [NSURL URLWithString:@"url"];
//for alert set the aleram and notify the user rest is taken care by calendar for u
EKAlarm *alaram = [[EKAlarm alloc]init];
[alaram setAbsoluteDate:datePicker.date];
[event addAlarm:alaram];
//finally add it to calendar
NSError *err = nil;
BOOL complete = [eventStore saveEvent:event span:EKSpanThisEvent error:&err];
if(err)
{
NSLog(@"error in storing event");
}
else
NSLog(@"successfully added");
if(complete)
{
NSLog(@"successfully added");
}
else
{
NSLog(@"error in storing event");
回答1:
i am posting the code related to adding events to calendar and setting the remainder time hope u can get some idea
- (void)addEventToCalendar
{
EKEventStore *eventStore = [[EKEventStore alloc]init];
if([eventStore respondsToSelector:@selector(requestAccessToEntityType:completion:)]) {
// iOS 6 and later
[eventStore requestAccessToEntityType:EKEntityTypeEvent completion:^(BOOL granted, NSError *error) {
if (granted){
//for IOS > 6.0
EKEvent *event = [EKEvent eventWithEventStore:eventStore];
[event setCalendar:[eventStore defaultCalendarForNewEvents]];
//no need to fill all fill which one u want to set
event.title =@"eventTitle";
event.location = @"eventLocation";
event.notes = @eventNote";
event.startDate = eventStartDate; //set date
event.endDate = eventEndTime;
event.URL = [NSURL URLWithString:@"url"];
//for alert set the aleram and notify the user rest is taken care by calendar for u
switch (evetReminder) { //set alaram for 5mins, 15mins ,20mins etc
case 0:
self.selectedAlertSetting = @"None";
break;
case 1:
{
EKAlarm *alaram = [[EKAlarm alloc]init];
[alaram setAbsoluteDate:eventStartDate];
[event addAlarm:alaram];
[alaram release];
break;
}
case 2:
{
NSTimeInterval aInterval = -5 *60;
EKAlarm *alaram = [EKAlarm alarmWithRelativeOffset:aInterval];
[event addAlarm:alaram];
break;
}
case 3:
{
NSTimeInterval aInterval = -15 * 60;
EKAlarm *alaram = [EKAlarm alarmWithRelativeOffset:aInterval];
[event addAlarm:alaram];
break;
}
case 4:
{
NSTimeInterval aInterval = -30 * 60;
EKAlarm *alaram = [EKAlarm alarmWithRelativeOffset:aInterval];
[event addAlarm:alaram];
break;
}
case 5:
{
NSTimeInterval aInterval = -1 * 60 * 60;
EKAlarm *alaram = [EKAlarm alarmWithRelativeOffset:aInterval];
[event addAlarm:alaram];
break;
}
case 6:
{
NSTimeInterval aInterval = -2 * 60 * 60;
EKAlarm *alaram = [EKAlarm alarmWithRelativeOffset:aInterval];
[event addAlarm:alaram];
break;
}
case 7:
{
NSTimeInterval aInterval = -1 * 24 * 60 * 60;
EKAlarm *alaram = [EKAlarm alarmWithRelativeOffset:aInterval];
[event addAlarm:alaram];
break;
}
case 8:
{
NSTimeInterval aInterval = -2 * 24 * 60 * 60;
EKAlarm *alaram = [EKAlarm alarmWithRelativeOffset:aInterval];
[event addAlarm:alaram];
break;
}
default:
break;
}
//finally add it to calendar
NSError *err = nil;
BOOL complete = [eventStore saveEvent:event span:EKSpanThisEvent error:&err];
if(err)
{
NSLog(@"error in storing event");
}
else
NSLog(@"successfully added");
if(complete)
{
NSLog(@"successfully added");
}
else
{
NSLog(@"error in storing event");
}
[eventStore release];
}
}];
}
else
{
//for IOS < 6.0
// perform same action hear
EKEvent *event = [EKEvent eventWithEventStore:eventStore];
[event setCalendar:[eventStore defaultCalendarForNewEvents]];
//no need to fill all fill which one u want to set
event.title =@"eventTitle";
event.location = @"eventLocation";
event.notes = @eventNote";
event.startDate = eventStartDate; //set date
event.endDate = eventEndTime;
event.URL = [NSURL URLWithString:@"url"];
//for alert set the aleram and notify the user rest is taken care by calendar for u
switch (evetReminder) { //set alaram for 5mins, 15mins ,20mins etc
case 0:
self.selectedAlertSetting = @"None";
break;
case 1:
{
EKAlarm *alaram = [[EKAlarm alloc]init];
[alaram setAbsoluteDate:eventStartDate];
[event addAlarm:alaram];
[alaram release];
break;
}
case 2:
{
NSTimeInterval aInterval = -5 *60;
EKAlarm *alaram = [EKAlarm alarmWithRelativeOffset:aInterval];
[event addAlarm:alaram];
break;
}
case 3:
{
NSTimeInterval aInterval = -15 * 60;
EKAlarm *alaram = [EKAlarm alarmWithRelativeOffset:aInterval];
[event addAlarm:alaram];
break;
}
case 4:
{
NSTimeInterval aInterval = -30 * 60;
EKAlarm *alaram = [EKAlarm alarmWithRelativeOffset:aInterval];
[event addAlarm:alaram];
break;
}
case 5:
{
NSTimeInterval aInterval = -1 * 60 * 60;
EKAlarm *alaram = [EKAlarm alarmWithRelativeOffset:aInterval];
[event addAlarm:alaram];
break;
}
case 6:
{
NSTimeInterval aInterval = -2 * 60 * 60;
EKAlarm *alaram = [EKAlarm alarmWithRelativeOffset:aInterval];
[event addAlarm:alaram];
break;
}
case 7:
{
NSTimeInterval aInterval = -1 * 24 * 60 * 60;
EKAlarm *alaram = [EKAlarm alarmWithRelativeOffset:aInterval];
[event addAlarm:alaram];
break;
}
case 8:
{
NSTimeInterval aInterval = -2 * 24 * 60 * 60;
EKAlarm *alaram = [EKAlarm alarmWithRelativeOffset:aInterval];
[event addAlarm:alaram];
break;
}
default:
break;
}
//finally add it to calendar
NSError *err = nil;
BOOL complete = [eventStore saveEvent:event span:EKSpanThisEvent error:&err];
if(err)
{
NSLog(@"error in storing event");
}
else
NSLog(@"successfully added");
if(complete)
{
NSLog(@"successfully added");
}
else
{
NSLog(@"error in storing event");
}
[eventStore release];
}
}
回答2:
Here is the working code ..:)
EKEventStore *eventStore = [[EKEventStore alloc] init] ;
EKEvent *event = [EKEvent eventWithEventStore:eventStore];
if([eventStore respondsToSelector:@selector(requestAccessToEntityType:completion:)]) {
// iOS 6 and later
[eventStore requestAccessToEntityType:EKEntityTypeEvent completion:^(BOOL granted, NSError *error) {
if (granted){
//---- codes here when user allow your app to access theirs' calendar.
[event setCalendar:[eventStore defaultCalendarForNewEvents]];
//no need to fill all fill which one u want to set
event.title =@"eventTitle";
event.location = @"eventLocation";
event.notes = @"eventNote";
event.startDate = datePicker.date; //set date
event.URL = [NSURL URLWithString:@"url"];
NSDate *newDate = [datePicker.date dateByAddingTimeInterval:24.0f * 60.0f * 60.0f + 120.0f];
event.endDate= newDate ;
//for alert set the aleram and notify the user rest is taken care by calendar for u
EKAlarm *alaram = [[EKAlarm alloc]init];
[alaram setAbsoluteDate:datePicker.date];
[event addAlarm:alaram];
//finally add it to calendar
NSError *err = nil;
BOOL complete = [eventStore saveEvent:event span:EKSpanThisEvent error:&err];
if(err)
{
NSLog(@"error in storing event");
}
else
NSLog(@"successfully added");
if(complete)
{
NSLog(@"successfully added");
}
else
{
NSLog(@"error in storing event");
}
}else
{
//----- codes here when user NOT allow your app to access the calendar.
}
}];
}
else {
//---- codes here for IOS < 6.0.
//[self performCalendarActivity:eventStore];
}
来源：https://stackoverflow.com/questions/19043069/how-to-set-reminder-in-ios-for-a-particular-time-and-show-it-after-2-min-interva