Check if Local Notifications are enabled in IOS 8

Question

I've looked all over the internet for how to create local notifications with IOS 8. I found many articles, but none explained how to determine if the user has set "alerts" on or off. Could someone please help me!!! I would prefer to use Objective C over Swift.

score 76 · Accepted Answer · edited Nov 26 '15 at 09:24

76

You can check it by using UIApplication 's currentUserNotificationSettings

if ([[UIApplication sharedApplication] respondsToSelector:@selector(currentUserNotificationSettings)]){ // Check it's iOS 8 and above
    UIUserNotificationSettings *grantedSettings = [[UIApplication sharedApplication] currentUserNotificationSettings];

    if (grantedSettings.types == UIUserNotificationTypeNone) {
        NSLog(@"No permiossion granted");
    }
    else if (grantedSettings.types & UIUserNotificationTypeSound & UIUserNotificationTypeAlert ){
        NSLog(@"Sound and alert permissions ");
    }
    else if (grantedSettings.types  & UIUserNotificationTypeAlert){
        NSLog(@"Alert Permission Granted");
    }
}

Hope this helps , Let me know if you need more info

edited Nov 26 '15 at 09:24

Ashvin

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answered Sep 26 '14 at 05:32

Bhumit Mehta

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this works great. If the user previously denied permissions the type == none but asking it again wont bring up the request window. How can I know if they previously denied it? Should I keep a flag in user preferences if I asked already? – mihai Feb 27 '15 at 19:06
1

Note, that it is available on iOS 8+ only. – FreeNickname Mar 04 '15 at 18:05
1

Note, this only determines if it is enabled, not explicitly disabled. – Jason McCreary Jul 22 '15 at 14:38
@jasonmccreary How do you mean exactly? How can it be enabled if its explicitly disabled? I thinking Im having this issue. I used the above code in this thread, but I do not get the wanted effect at all. I have made a thread: http://stackoverflow.com/questions/33766846/uiusernotificationsettings-not-working-right – DevilInDisguise Nov 17 '15 at 21:09
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Shouldn't the second `if` be something like if (`grantedSettings.types & (UIUserNotificationTypeSound | UIUserNotificationTypeAlert))`since the bitwise comparation between 7* (111) & 2 (010) & 4 (100) will result in 0. 7 is all permissions – Benjamin Jimenez Mar 08 '16 at 16:50
1

further to what Benjamin said - `(grantedSettings.types & UIUserNotificationTypeSound & UIUserNotificationTypeAlert)` will NEVER be true – yet another programmer Apr 05 '16 at 15:18
I know the question asks for Objective-C, but adding a Swift version of your answer could also be helpful :) – George Marmaridis Sep 07 '16 at 10:35

score 23 · Answer 2 · edited Mar 18 '17 at 21:45

23

To expand on Albert's answer, you are not required to use rawValue in Swift. Because UIUserNotificationType conforms to OptionSetType it is possible to do the following:

if let settings = UIApplication.shared.currentUserNotificationSettings {
    if settings.types.contains([.alert, .sound]) {
        //Have alert and sound permissions
    } else if settings.types.contains(.alert) {
        //Have alert permission
    }
}

You use the bracket [] syntax to combine option types (similar to the bitwise-or | operator for combining option flags in other languages).

edited Mar 18 '17 at 21:45

Elijah

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answered Oct 01 '15 at 04:36

simeon

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If you just want to know if the user have selected "something" then: `let active = settings.types.intersection([.alert, .badge,.sound]).isEmpty == false` – Michał Kałużny Feb 10 '17 at 15:54
2

Your answer is the best answer Michal Kaluzny +1 – MadNeox Jun 28 '17 at 17:11

score 9 · Answer 3 · answered May 31 '16 at 10:31

9

Swift with guard:

guard let settings = UIApplication.sharedApplication().currentUserNotificationSettings() where settings.types != .None else {
    return
}

answered May 31 '16 at 10:31

zgjie

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could you explain what your code does? if != .none { what? } else { what? } – George Asda Feb 19 '17 at 11:05

score 9 · Answer 4 · answered Apr 03 '17 at 15:24

Here is a simple function in Swift 3 that checks whether at least one type of notification is enabled.

Enjoy!

static func areNotificationsEnabled() -> Bool {
    guard let settings = UIApplication.shared.currentUserNotificationSettings else {
        return false
    }

    return settings.types.intersection([.alert, .badge, .sound]).isEmpty != true
}

Thanks Michał Kałużny for the inspiration.

score 7 · Answer 5 · edited May 23 '17 at 10:31

7

Edit: Take a look at @simeon's answer.

In Swift, you need to use rawValue:

let grantedSettings = UIApplication.sharedApplication().currentUserNotificationSettings()
if grantedSettings.types.rawValue & UIUserNotificationType.Alert.rawValue != 0 {
    // Alert permission granted
}

edited May 23 '17 at 10:31

Community

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answered Jan 14 '15 at 16:47

Albert Vila Calvo

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Don't use the `rawValue`s, I don't think there's any guarantee they'd never change. As @simeon says, use `settings.types.contains(.Alert)` – Chris Wagner Mar 29 '16 at 19:06
No idea @ChrisWagner. I took this from a book from Matt Neuburg. I don't do iOS (I was porting an Android app 1 year ago). I've edited the answer to point to simeon's one. Thanks for the downvote anyway :) – Albert Vila Calvo Mar 30 '16 at 10:28

Andrea Gorrieri · Answer 6 · 2018-08-22T13:05:56.453

Using the @simeon answer Xcode tells me that

'currentUserNotificationSettings' was deprecated in iOS 10.0: Use UserNotifications Framework's -[UNUserNotificationCenter getNotificationSettingsWithCompletionHandler:] and -[UNUserNotificationCenter getNotificationCategoriesWithCompletionHandler:]

so here is the solution using the UNUserNotificationCenter for Swift 4:

UNUserNotificationCenter.current().getNotificationSettings(){ (settings) in

        switch settings.alertSetting{
        case .enabled:

            //Permissions are granted

        case .disabled:

            //Permissions are not granted

        case .notSupported:

            //The application does not support this notification type
        }
    }

score 3 · Answer 7 · answered Dec 21 '15 at 11:04

I think this code is more precise :

if ([[UIApplication sharedApplication] respondsToSelector:@selector(currentUserNotificationSettings)]) {

    UIUserNotificationType types = [[[UIApplication sharedApplication] currentUserNotificationSettings] types];

    if (types & UIUserNotificationTypeBadge) {
        NSLog(@"Badge permission");
    }
    if (types & UIUserNotificationTypeSound){
        NSLog(@"Sound permission");
    }
    if (types & UIUserNotificationTypeAlert){
        NSLog(@"Alert permission");
    }
}

Please consider adding a few lines to explain the code. – halfzebra Dec 21 '15 at 11:13 — halfzebra, Dec 21 '15 at 11:13

score 0 · Answer 8 · answered Jul 16 '18 at 12:17

Objective C + iOS 10

  UNUserNotificationCenter *center = [UNUserNotificationCenter currentNotificationCenter];
  [center getNotificationSettingsWithCompletionHandler:^(UNNotificationSettings * _Nonnull settings) {

        switch (settings.authorizationStatus) {
            case UNAuthorizationStatusNotDetermined:

                break;

            case UNAuthorizationStatusDenied:

                break;

            case UNAuthorizationStatusAuthorized:

                break;

            default:
                break;
        }
    }];

Check if Local Notifications are enabled in IOS 8

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