iOS Silent local push notifications objective c?

Question

I am searching for way to implement silent local push notifications. I want to send silent notification to user when that user is out of range.

• Paulw11: There is no facility to send a silent local notification.
• dokun1: When you say silent, what do you mean? Do you want to avoid sound? Please explain this further, this question is too broad.
• Ruturaj Desai: @dokun1 I am trying send notification which will work in background like Remote silent notifications. User will not see those notifications in notification center.

Answer 1

Solved. While creating local notification don't set following values.

notification.alertBody = message;
notification.alertAction = @"Show";
notification.category = @"ACTION"; 
notification.soundName = UILocalNotificationDefaultSoundName;

Just crate local notification like this:

UILocalNotification *notification = [[UILocalNotification alloc] init];
notification.fireDate = [NSDate date];
NSTimeZone* timezone = [NSTimeZone defaultTimeZone];
notification.timeZone = timezone;
notification.applicationIconBadgeNumber = 4;
[[UIApplication sharedApplication]scheduleLocalNotification:notification];

This will send local notification and will only display IconBadgeNumber as 4. No notification will be shown in notification center when app is in background.

Updated for iOS10 (UNUserNotificationCenter)

In AppDelegate

@import UserNotifications;
UNUserNotificationCenter *center = [UNUserNotificationCenter currentNotificationCenter];
UNAuthorizationOptions options = UNAuthorizationOptionAlert + UNAuthorizationOptionSound + UNAuthorizationOptionBadge;
[center requestAuthorizationWithOptions:options
 completionHandler:^(BOOL granted, NSError * _Nullable error) {
 if (!granted) {
 NSLog(@"Something went wrong");
 }
 }];

In ViewController

UNUserNotificationCenter *center = [UNUserNotificationCenter currentNotificationCenter];
UNMutableNotificationContent *content = [UNMutableNotificationContent new];
//content.title = @"Don't forget";
//content.body = @"Buy some milk";
//content.sound = [UNNotificationSound defaultSound];
content.badge = [NSNumber numberWithInt:4];
UNTimeIntervalNotificationTrigger *trigger = [UNTimeIntervalNotificationTrigger triggerWithTimeInterval:15 repeats:NO];
NSString *identifier = @"UniqueId";
UNNotificationRequest *request = [UNNotificationRequest requestWithIdentifier:identifier
 content:content trigger:trigger];
[center addNotificationRequest:request withCompletionHandler:^(NSError * _Nullable error) {
 if (error != nil) {
 NSLog(@"Something went wrong: %@",error);
 }
}];

This will send a silent notification after 15 sec with badge count as 4.

• Ammaiappan: Hi @Ruturaj Desai : thanks its working, but i need similar for iOS 10 using UNUserNotificationCenter. any idea please.
• Ruturaj Desai: Hi @Ammaiappan, I just updated my answer for iOS 10 (UNUserNotificationCenter). This might help you. Happy coding.
• Abhijeet Barge: Hi @Ruturaj Desai, I tried same, and its works perfect when app is in foreground, But in background it does not work. Any work around for background?
• khunshan: Will it be called if app is not running?