특정 날짜의 화재 UILocalNotification

Question

특정 날짜에 UILocalNotification을 발사하고 싶습니다. 이 코드를 사용하는 경우 :

NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar]; 
NSDateComponents *components = [gregorian components:NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit fromDate:[NSDate date]]; 

[components setHour:4]; 
[components setMinute:0]; 

NSDate *fireDate = [gregorian dateFromComponents:components]; 

지금은 오후 3시이면 제대로 작동하지만 예를 들어 오후 5 시가되면 작동하지 않습니다.

어떻게 통지 발사 일을 "다음 4 pm"으로 설정할 수 있습니까? 24 시간 형식의 코드를 다음

Answer 1

NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar]; 
NSDateComponents *components = [gregorian components:NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit fromDate:[NSDate date]]; 

[components setHour:4]; 
[components setMinute:0]; 

NSDate *fireDate = [gregorian dateFromComponents:components]; 
NSLog(@"Fire date : %@",fireDate);// Today 4pm is already passed. So you wont get notification 

// You need to check if the time is already passed 
if ([fireDate compare:[NSDate date]] == NSOrderedAscending) 
{ 
    // Schedule it for next day 4pm 
    components.day = components.day+1; 
    fireDate = [gregorian dateFromComponents:components]; 
} 
NSLog(@"Fire date : %@",fireDate); 

Answer 2

시도 : -

NSDate *date = [NSDate date]; 
NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier: NSGregorianCalendar]; 
NSDateComponents *components = [gregorian components: NSUIntegerMax fromDate: date]; 
[components setHour:16]; 
[components setMinute:0]; 
[components setSecond:0]; 

NSDate *newDate = [gregorian dateFromComponents: components]; 
[gregorian release];  

UILocalNotification *localNotif = [[UILocalNotification alloc] init]; 
localNotif.fireDate = newDate; 
localNotif.alertBody = [NSString stringWithFormat:@"Alarm for time : %@",newDate]; 
[[UIApplication sharedApplication] scheduleLocalNotification:localNotif]; 
[localNotif release];