As of iOS4, Apple has introduced a new type of notification that can be scheduled to fire within the device itself. It requires no complicated server programming, or additional configuration with iTunes. I am talking about Local Notifications.Local notifications can be scheduled on the user’s IPhone Device to fire at any given time; you can even set them to be recurring.
To create a local notification, we will use given below code snippet or following steps
From IOS 8 onward you have to ask for UIlocalNotification permission from the user, you can do this by adding below chunk of code in applicationDidFinishLaunching method of AppDelegate.m
if ([application respondsToSelector:@selector(registerUserNotificationSettings:)]) {
[application registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeAlert|UIUserNotificationTypeBadge|UIUserNotificationTypeSound categories:nil]];
}
1.Create the localNotification object
UILocalNotification *localNotification = [[UILocalNotification alloc] init];
2.Set date to fire notification. Here we set it to fire after 30 seconds
[localNotification setFireDate:[NSDate dateWithTimeIntervalSinceNow:30]];
3.The button’s text that launches the application and is shown in the alert
[localNotification setAlertAction:@”Ok”];
4.Set the message in the notification from the textField’s text
[localNotification setAlertBody:@”Notification Alert”];
5.Set the Application Icon Badge Number of the application’s icon to the current Application Icon Badge Number plus 1
[localNotification setApplicationIconBadgeNumber:[[UIApplication sharedApplication] applicationIconBadgeNumber]+1];
6.Set sound for notification
6.Set sound for notification
localNotification.soundName=UILocalNotificationDefaultSoundName ;
7.Schedule the notification with the system
[[UIApplication sharedApplication] scheduleLocalNotification:localNotification];
8. Release localNotification object
[localNotification release];
To cancel a localnotification in iPhone SDk, one can use
cancelAllLocalNotifications
method. To use it write below line of code
[[UIApplication sharedApplication] cancelAllLocalNotifications];
This will remove all local notification registered by your app.