iOS - UILocalNotification針對相同的通知觸發了兩次

Question

如果我安排兩個UILocalNotification並將它們設置為在完全相同的fireDate上觸發。 然后在fireDate上的設備上（這不是模擬器錯誤） application:didReceiveLocalNotification: didReceiveLocalNotification application:didReceiveLocalNotification:將觸發4次（每次通知2次）。 這是一個已知的錯誤？ 因為我無法找到任何有關它的信息。

Answer 1

請將錯誤報告給http://bugreport.apple.com 。

話雖如此，之前已經注意到，雖然模擬器中存在錯誤，但設備上似乎還存在錯誤。

請參閱此SO問題的評論和答案： 本地通知“didReceiveLocalNotification”調用兩次

Answer 2

試試這個在我的應用程序中的工作：

-(IBAction)setRemind:(id)sender{

NSCalendar *calendar = [NSCalendar autoupdatingCurrentCalendar];

NSDateFormatter *dateFormatter2 = [[NSDateFormatter alloc] init];

[dateFormatter2 setDateFormat:@"YYYY-MM-dd HH:mm:ss"];

//Gets our picker
NSDate *selectedTime = [datePicker date];
strDate2 = [dateFormatter2 stringFromDate:selectedTime];
NSDate *Date=[dateFormatter2 dateFromString:strDate2];

NSDateComponents *dateComponents = [calendar components:(NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit ) fromDate:Date];

// Set up the fire time
NSDateComponents *dateComp = [[NSDateComponents alloc] init];
[dateComp setDay:[dateComponents day]];
[dateComp setMonth:[dateComponents month]];
[dateComp setYear:[dateComponents year]];
[dateComp setHour:9];
[dateComp setMinute:00];
[dateComp setSecond:00];
[dateComp release];

NSDate *date = [calendar dateFromComponents:dateComp];
[self scheduleAlarmForDate:date message:txtDescri.text];

}


-(IBAction)scheduleAlarmForDate:(NSDate*)date message:(NSString*)msg
{

//====== TO SEE OLD NOTIFI=======
UIApplication *Ap = [UIApplication sharedApplication];
NSArray *arr = [Ap scheduledLocalNotifications];
NSLog(@"Old Notifications :>> %@",arr);

UIApplication* app = [UIApplication sharedApplication];
UILocalNotification *alarm = [[UILocalNotification alloc] init];

// Create a new notification
alarm.fireDate = date;
NSLog(@"fireDate IS >> %@", alarm.fireDate);
alarm.timeZone = [NSTimeZone localTimeZone];
alarm.alertBody = msg;
NSLog(@"msg IS >> %@",msg);
alarm.alertAction = @"Show";
alarm.repeatInterval = 0;
alarm.soundName = UILocalNotificationDefaultSoundName;
alarm.applicationIconBadgeNumber = 1;
[app scheduleLocalNotification:alarm];
 [alarm release];
} 

我希望它對你有所幫助。