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我就提醒有关到期日一个应用程序的工作。我已使用UILocalNotification与重复间隔(NSMonthCalendarUnit, NSDayCalendarUnit,NSDayCalendarUnit)实施相同。例如，我对2012年1月1日火日期和重复间隔时间为NSDayCalendarUnit和结束日期为12-12-2012，是possbile到cancelLocalNotification:期满。IOS CancelNotificaion当应用程序在后台
这里是代码： -
- (void) scheduleNotificationOn:(NSDate*) fireDate
text:(NSString*) alertText
action:(NSString*) alertAction
sound:(NSString*) soundfileName
launchImage:(NSString*) launchImage
andInfo:(NSDictionary*) userInfo
{
userInfo = [NSDictionary dictionaryWithObjectsAndKeys:
txtExpiryDate.text, @"ExpiryDate",
txtRegNo.text , @"RegNo",
nil];
UILocalNotification *localNotification = [[UILocalNotification alloc] init];
localNotification.fireDate = fireDate;
localNotification.timeZone = [NSTimeZone systemTimeZone];
localNotification.userInfo = userInfo;
localNotification.alertBody = alertText;
localNotification.alertAction = alertAction;
NSLog(@"Repeat Type:%@",txtRepeat.text);
if([txtRepeat.text isEqualToString:@"Every Week"])
{
NSLog(@"Every Week");
localNotification.repeatInterval = 256;
}
else if([txtRepeat.text isEqualToString:@"Every Month"])
{
NSLog(@"Every Month");
localNotification.repeatInterval = NSMonthCalendarUnit;
}
else if([txtRepeat.text isEqualToString:@"Every Day"])
{
NSLog(@"Every Day");
localNotification.repeatInterval = NSDayCalendarUnit;
}
if(soundfileName == nil)
{
localNotification.soundName = UILocalNotificationDefaultSoundName;
}
else
{
localNotification.soundName = soundfileName;
}
NSLog(@"appDelegate.BadgeNumber:%d",appDelegate.BadgeNumber);
localNotification.alertLaunchImage = launchImage;
appDelegate.BadgeNumber = appDelegate.BadgeNumber + 1;
localNotification.applicationIconBadgeNumber = appDelegate.BadgeNumber;
[[UIApplication sharedApplication] scheduleLocalNotification:localNotification];
[localNotification release];
}
我已经通过比较当前日期到期日的工作。但是，只有当应用程序处于前台并且我无法取消通知而不是特定日期的后台时，此工作才会生效。请找到相同下面的代码： -
- (void)applicationDidBecomeActive:(UIApplication *)application
{
/*
Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
*/
BadgeNumber = 0;
application.applicationIconBadgeNumber = BadgeNumber;
NSArray *localNotifications = [[UIApplication sharedApplication] scheduledLocalNotifications];
[[UIApplication sharedApplication] cancelAllLocalNotifications];
NSDateFormatter *formatter =[[[NSDateFormatter alloc]init] autorelease];
[formatter setDateFormat:@"dd/MM/yyyy"];
NSLog(@"localNotifications Count %d",localNotifications.count);
for (UILocalNotification *notify in localNotifications)
{
//notify.applicationIconBadgeNumber = 0;
NSString *ExpiryDateString = [notify.userInfo objectForKey:@"ExpiryDate"];
NSDate *ExpiryDate = [formatter dateFromString:ExpiryDateString];
NSDate * NextFireDate = nil;
NSLog(@"Expiry Date:%@",ExpiryDateString);
if(notify.repeatInterval == NSDayCalendarUnit)
{
NSLog(@"Repeat Every Day");
NextFireDate = [[NSDate date] dateByAddingDays:1];
NSLog(@"Next FireDate: %@",[formatter stringFromDate:NextFireDate]);
}
if(notify.repeatInterval == NSWeekCalendarUnit)
{
NSLog(@"Repeat Every Day");
NextFireDate = [[NSDate date] addTimeInterval:D_WEEK];
NSLog(@"Next FireDate: %@",[formatter stringFromDate:NextFireDate]);
}
if(notify.repeatInterval == NSMonthCalendarUnit)
{
NSLog(@"Repeat Every Day");
//NextFireDate = [[NSDate date] addTimeInterval:D_Month];
NextFireDate = [self CalculateExipiryDateForMonth];
NSLog(@"Next FireDate: %@",[formatter stringFromDate:NextFireDate]);
}
NSComparisonResult result = [NextFireDate compare:ExpiryDate];
NSLog(@"NSComparisonResult:%d",result);
if(result == NSOrderedDescending)
{
NSLog(@"Cancell......... Notification");
NSLog(@"notify :::%@",notify);
}
else
{
NSLog(@"Re-Schedule Notification");
BadgeNumber = BadgeNumber + 1;
notify.applicationIconBadgeNumber = BadgeNumber;
NSLog(@"BadgeNumber:%d",BadgeNumber);
[[UIApplication sharedApplication] scheduleLocalNotification:notify];
}
}
}
-(NSDate*) CalculateExipiryDateForMonth
{
NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
NSDateComponents *components = [[NSDateComponents alloc] init];
components.month = 1;
NSDate *nextMonth = [gregorian dateByAddingComponents:components toDate:[NSDate date] options:0];
[components release];
NSDateComponents *nextMonthComponents = [gregorian components:NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit fromDate:nextMonth];
NSDate *expiryDay = [gregorian dateFromComponents:nextMonthComponents];
NSDateComponents *dayComponent = [[NSDateComponents alloc] init];
dayComponent.day = -1;
NSDate *NewExpiry = [gregorian dateByAddingComponents:dayComponent toDate:expiryDay options:0];
[gregorian release];
[dayComponent release];
NSDateFormatter *formatter = [[[NSDateFormatter alloc] init] autorelease];
[formatter setDateFormat:@"dd/MM/yyyy"];
NSLog(@"Next Exipiry Date -----:%@",[formatter stringFromDate:NewExpiry]);
return NewExpiry;
}
我已经安排UILocalNotification重复间隔NSDaycalendar。通知应每天重复90天，第91天应该取消。如何取消通知当应用程序运行不运行时是Foreground？是否有任何特定的属性，我们可以设置UILocalnotification的最后日期。 – Hariharan
我明白你想要做什么，但这是不可能的。没有可以设置的属性。我研究了一些类似于你想要做的一些事情，并找不到解决方案。如果你能找到解决方案，我很乐意听到它。 – Darren
我找不到任何解决方案。我所做的是，如果通知发送到应用程序时，我检查它是否仍然有效，那么如果应该过期，我将其取消并向用户显示一条消息，告知此通知已过期。 – IgniteCoders