Ask for User Permission to Receive UILocalNotifications in iOS 8

Question

I have set up local notifications in the App Delegate Using this:

- (void)applicationDidEnterBackground:(UIApplication *)application
{
    UILocalNotification *notification = [[UILocalNotification alloc]init];
    [notification setAlertBody:@"Watch the Latest Episode of CCA-TV"];
    [notification setFireDate:[NSDate dateWithTimeIntervalSinceNow:5]];
    [notification setTimeZone:[NSTimeZone defaultTimeZone]];
    [application setScheduledLocalNotifications:[NSArray arrayWithObject:notification]];
}

When I run the app and then quit it I receive an error saying:

2014-06-07 11:14:16.663 CCA-TV[735:149070] Attempting to schedule a local notification{fire date = Saturday, June 7, 2014 at 11:14:21 Pacific Daylight Time, time zone = America/Los_Angeles (PDT) offset -25200 (Daylight), repeat interval = 0, repeat count = UILocalNotificationInfiniteRepeatCount, next fire date = Saturday, June 7, 2014 at 11:14:21 Pacific Daylight Time, user info = (null)} with an alert but haven't received permission from the user to display alerts

How can I get the necessary permission to display the alerts?

I think the app has rejected the permission once, you can try enable from Settings. But by the way UILocalNotification don't need user permission.. — iphonic, Jun 7 '14 at 18:39
Try registerUserNotificationSettings. Had it been iOS 8, this thread would have answered your question. But, g ahead have a look -stackoverflow.com/questions/24006998/… — raurora, Jun 7 '14 at 20:43

satheeshwaran · Accepted Answer · 2015-08-06 16:38:32Z

Since iOS 8 you need to ask user's permission to show notifications from your app, this applies for both remote/push and local notifications. In Swift you can do it like this,

Update for Swift 2.0

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: NSDictionary?) -> Bool {
    // Override point for customization after application launch.
    if(UIApplication.instancesRespondToSelector(Selector("registerUserNotificationSettings:")))
    {
    let notificationCategory:UIMutableUserNotificationCategory = UIMutableUserNotificationCategory()
    notificationCategory.identifier = "INVITE_CATEGORY"
    notificationCategory .setActions([replyAction], forContext: UIUserNotificationActionContext.Default)

    //registerting for the notification.
    application.registerUserNotificationSettings(UIUserNotificationSettings(forTypes:[ .Sound, .Alert,
        .Badge], categories: nil)
    }
    else
    {
       //do iOS 7 stuff, which is pretty much nothing for local notifications.
    }
    return true
}

Objective C syntax is also very similar.

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    if ([UIApplication instancesRespondToSelector:@selector(registerUserNotificationSettings:)]){
        [application registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeAlert|UIUserNotificationTypeBadge|UIUserNotificationTypeSound categories:nil]];
    }
    // Override point for customization after application launch.
    return YES;
}

To check for currently registered notification types you can use UIApplications method,

- (UIUserNotificationSettings *)currentUserNotificationSettings

So if the user has said no to your app then this function should return a setting without any types in it.

I have written a tutorial about this, you could see it here.

If the user denies permission, how do you determine this later programatically? — jjxtra, Jun 18 '14 at 17:50
@satheeshwaran When I use this code, It is working fine with simulator with iOS8. I wanted my app's deployment target starting from iOS7. So, when I run this code on an iOS7 device, I get this error: dyld: Symbol not found: _OBJC_CLASS_$_UIUserNotificationSettings. Is there any other way in Swift to ask user for permissions in order to work in iOS7? please help. — Raghav, Aug 23 '14 at 11:33
-1 for checking iOS version UIDevice. stackoverflow.com/a/25735175/1226304 answer has better approach to do this. — derpoliuk, Sep 18 '14 at 8:30
@derpoliuk Updated as in the answer for everyone's benefit, ok?? — satheeshwaran, Sep 18 '14 at 15:53

KPM · Answer 2 · 2014-09-17 09:57:27Z

Put this code in the view controller where you will first program the notifications (if you program them at launch, then it will be application:didFinishLaunchingWithOptions:):

if ([UIApplication instancesRespondToSelector:@selector(registerUserNotificationSettings:)]) {
    [[UIApplication sharedApplication] registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeAlert|UIUserNotificationTypeSound categories:nil]];
}

In Swift:

if(UIApplication.instancesRespondToSelector(Selector("registerUserNotificationSettings:"))) {
    UIApplication.sharedApplication().registerUserNotificationSettings(UIUserNotificationSettings(forTypes: .Alert | .Sound, categories: nil))
}

The solutions that test against system version number are sub-optimal and error-prone.

I would useapplication.respondsToSelector(Selector("registerUserNotificationSettings")) andif ([application respondsToSelector:@selector(registerUserNotificationSettings:)]) — derpoliuk, Sep 19 '14 at 12:49
Well that's only because you're using it inside application:didFinishLaunchingWithOptions:which provides a handy application object :) — KPM, Sep 19 '14 at 12:53

Nagarjun · Answer 3 · 2015-05-14 06:14:14Z

Try this for Objective-C:

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:    (NSDictionary *)launchOptions
{
// are you running on iOS8?
if ([application respondsToSelector:@selector(registerUserNotificationSettings:)]) 
  {
    UIUserNotificationSettings *settings = [UIUserNotificationSettings settingsForTypes:(UIUserNotificationTypeBadge|UIUserNotificationTypeAlert|UIUserNotificationTypeSound) categories:nil];
    [application registerUserNotificationSettings:settings];
  } 
else // iOS 7 or earlier
  {
    UIRemoteNotificationType myTypes = UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeAlert | UIRemoteNotificationTypeSound;
    [application registerForRemoteNotificationTypes:myTypes];
  }
}

For Swift:

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: NSDictionary?) -> Bool {
// Override point for customization after application launch.
 if(UIApplication.instancesRespondToSelector(Selector("registerUserNotificationSettings:")))
 {
    application.registerUserNotificationSettings(UIUserNotificationSettings(forTypes: UIUserNotificationType.Sound | UIUserNotificationType.Alert | UIUserNotificationType.Badge, categories: nil))
 }
 else
 {
    //
 }
return true
}

score 5 · Answer 4

I just faced the same problem. Seems like in iOS 8 we need to do an additional step, usually done inside:

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { /*...*/ }

You can use this code if you want to keep it backward compatible:

#if __IPHONE_OS_VERSION_MAX_ALLOWED >= 80000
    if ([UIApplication instancesRespondToSelector:@selector(registerUserNotificationSettings:)])
    {
        [[UIApplication sharedApplication] registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeAlert | UIUserNotificationTypeBadge | UIUserNotificationTypeSound categories:nil]];
    }
#endif

The system will remember the decision, and will only ask once.

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Ask for User Permission to Receive UILocalNotifications in iOS 8

4 Answers