iPhone : Daily local notifications - ios

Question

I am trying to implement local notification
This is what I have set
// Current date
NSDate *date = [NSDate date];
// Add one minute to the current time
NSDate *dateToFire = [date dateByAddingTimeInterval:20];
// Set the fire date/time
[localNotification setFireDate:dateToFire];
[localNotification setTimeZone:[NSTimeZone defaultTimeZone]];
Instead of 20, I want to put a fixed time(daily)to start push.
For ex:I want to push notification pop up at every 6:00AM.
How can do that ?
Thanks

Answer 1

You just need to properly create a NSDate object to be your fire date (time). Instead of using [NSDate dateByAddingTimeInterval: 20], use something like this:
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];
Here are the Apple NSDateComponents API docs
And then when you add the date to the notification, set the repeat interval to one day:
[localNotification setFireDate: dateToFire];
[localNotification setTimeZone: [NSTimeZone defaultTimeZone]];
[localNotification setRepeatInterval: kCFCalendarUnitDay];
As with all date related code, make sure to test how this works during the switch to daylight savings time, if your time zone uses daylight savings time.

Answer 2

I guess what you need is NSDayCalendarUnit.
You can check this answer. And here is another tutorial worth reading.

Answer 3

NSDate *alertTime = [[NSDate date] dateByAddingTimeInterval:10];
UIApplication* app = [UIApplication sharedApplication];
UILocalNotification* notifyAlarm = [[[UILocalNotification alloc] init] autorelease];
if (notifyAlarm)
{
notifyAlarm.fireDate = alertTime;
notifyAlarm.timeZone = [NSTimeZone defaultTimeZone];
notifyAlarm.repeatInterval = 0;
notifyAlarm.soundName = #"Glass.aiff";
notifyAlarm.alertBody = #"Staff meeting in 30 minutes";
[app scheduleLocalNotification:notifyAlarm];
}