iOS - UILocalNotification针对相同的通知发射两次

Question

如果我安排两个UILocalNotification s并将它们设置为在相同的fireDate触发。然后在设备上（这不是模拟器错误）在fireDate application:didReceiveLocalNotification:将触发4次（每次通知2次）。这是一个已知的错误？因为我一直无法找到任何有关它的信息。

Answer 1

请将bug报告给http://bugreport.apple.com。

话虽如此，之前已经注意到，虽然有模拟器中的错误，但在设备上似乎也存在错误。

参见这太问题的意见和答案：local notification "didReceiveLocalNotification" calls twice

Answer 2

试试这个它的工作在我的应用程序：

-(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]; 
} 

我希望这对您有所帮助。