How to fire daily localnotification at specific time in iOS

Question

I want to get daily notification and for that I have googled and I got some solution from this iPhone : Daily local notifications but I couldn't recognise properly

NSCalendar *calendar = [NSCalendar currentCalendar];
NSDateComponents *components = [[NSDateComponents alloc] init];
[components setDay: 3];
[components setMonth: 7];
[components setYear: 2012];
[components setHour: 6];
[components setMinute: 0];
[components setSecond: 0];
[calendar setTimeZone: [NSTimeZone defaultTimeZone]];
NSDate *dateToFire = [calendar dateFromComponents:components];

Let's say suppose current time is 3:13, and current date is 20-11-2014 in this I want to set local notification at time of 3:14, 20-11-2014 can anybody please help me, because I have tried with following things but not working

    [components setDay: 20];
    [components setMonth: 11];
    [components setYear: 2014];
    [components setHour: 15];
    [components setMinute: 14];
    [components setSecond: 0];

Get the current date/time, add one day (if before midnight), extract the date components, set the hour to 7 and reset minutes/seconds to 0, and then create a new date object from those date components. You cannot do it with date components alone. — trojanfoe, Nov 20 '14 at 10:08

score 2 · Accepted Answer · answered Nov 20 '14 at 10:17

2

 NSDate *date = [NSDate date];
NSDate *newDate1 = [date dateByAddingTimeInterval:60*60*24];
UILocalNotification *localNotif = [[UILocalNotification alloc] init];
localNotif.fireDate = newDate1;
localNotif.timeZone = [NSTimeZone defaultTimeZone];
localNotif.alertBody = [[NSUserDefaults standardUserDefaults] objectForKey:@"NotificationText"];
localNotif.alertAction = @"View";
localNotif.applicationIconBadgeNumber = 1;
[[UIApplication sharedApplication] scheduleLocalNotification:localNotif];

try this one hope this may help you. Thank you

answered Nov 20 '14 at 10:17

Deepesh V R

104
5

Using `60*60*24` is wrong and will lead to subtle errors some of the time. – trojanfoe Nov 20 '14 at 10:27
i used 60*60*24 for representing total seconds in one day (i.e. 86400 seconds) you can customise according to your requirement :) and what was that error? – Deepesh V R Nov 20 '14 at 12:05
During daylight saving time changes the number of seconds between X hour today and X hour tomorrow is not 86400 seconds. – trojanfoe Nov 20 '14 at 12:12
I don't think that much deep. Its just a mathematical calculation thats all. :) – Deepesh V R Nov 20 '14 at 12:15
Yah I know. I just used an example you can edit whatever you like. – Deepesh V R Nov 20 '14 at 12:20
That's not how it works here. You will be repeatedly downvoted until you correct your answer. – trojanfoe Nov 20 '14 at 12:20
I am using this same code and it works. And it give daily notification to me. I written this code in - (void)applicationWillResignActive:(UIApplication *)application – Deepesh V R Nov 20 '14 at 12:29

Dev · Answer 2 · 2014-11-20T10:44:19.237

-1

NSDate* now = [NSDate date] ;
NSDateComponents* tomorrowComponents = [NSDateComponents new] ;
tomorrowComponents.day = 1 ;
NSCalendar* calendar = [NSCalendar currentCalendar] ;
NSDate* tomorrow = [calendar dateByAddingComponents:tomorrowComponents toDate:now options:0] ;
NSDateComponents* tomorrowAt7AMComponents = [calendar components:(NSEraCalendarUnit|NSYearCalendarUnit|NSMonthCalendarUnit|NSDayCalendarUnit) fromDate:tomorrow] ;
tomorrowAt7AMComponents.hour = 7 ;
NSDate* tomorrowAt7AM = [calendar dateFromComponents:tomorrowAt7AMComponents] ;
localnotification.fireDate = tomorrowAt7AM;

I hope this helps you.

edited Nov 20 '14 at 10:44

answered Nov 20 '14 at 10:12

Dev

363
2
9

Don't you need to do something to `tomorrowComponents` before using it? – trojanfoe Nov 20 '14 at 10:16
I don't see how. You create an `NSDateComponents` object and use it to create a new date, from *now*, without having set anything in that date components object. – trojanfoe Nov 20 '14 at 10:26
1

This is't the answer, and u r mislead others. This isn't a `UILocalNotification`, the @Deepesh V R is the right answer... – gran33 Nov 20 '14 at 10:34
localnotification.fireDate .here the localnotification refers to the UILocalNotification object – Dev Nov 20 '14 at 10:38
@trojanfoe tomorrowComponents is used to just get a date(tomorrow's) from 'now' from the calendar. it has not been used after that – Dev Nov 20 '14 at 10:42
But it's not been initialised. I would expect `tomorrowComponents.day = 1;` before it was used. – trojanfoe Nov 20 '14 at 10:43
OK so now it's been updated to what I would expect and I will revert my downvote, but why the statement "no need. It works for me.!!" and why was the answer accepted before this edit? – trojanfoe Nov 20 '14 at 10:46
He didn't ask for how to set local notification. he asked for how to set a date for a local notification. He asked for the date. The answer which is marked correct will fire notification after 24hrs. It will not fire notification at 7am daily. – Dev Nov 21 '14 at 05:40

How to fire daily localnotification at specific time in iOS

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