CODEWITHSUNDEEP
iosobjective-cios7uilocalnotification
MartinJeffers
MartinJeffers

Reputation: 47

Is it possible to trigger a local notification after an event IOS?

Im working on an app that does some computationally heavy tasks that take a long time. I want to notify the user with a local push notification when the task is done. Is this possible? The only information I have been able to find online is to do with triggering notifications at certain times/dates or if the app has entered the background or terminated, all of which is done in the appDelegate. Is there a way to do this in my own classes?

Thanks.

Upvotes: 1

Views: 3181

Answers (2)

ananddrs
ananddrs

Reputation: 41

The above answer by Aaron works fine but don't forget to ask permission for Local Notification. In my case case I ask permission at AppDelegate under - 

(BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions

and here is the code for iOS8 and iOS9

if ([application respondsToSelector:@selector(registerUserNotificationSettings:)]) {
        [application registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeAlert|UIUserNotificationTypeBadge|UIUserNotificationTypeSound categories:nil]];
    }

Upvotes: 1

Aaron
Aaron

Reputation: 7145

I'm not 100% certain you're looking for a UILocalNotification example because the post title mentions push notifications. Either way, you can schedule local notifications from any class you want

- (void)throwLocalNotificationWithMessage:(NSString*)message {    
    UILocalNotification *localNotification = [[UILocalNotification alloc] init];
    NSDate *now = [NSDate date];
    localNotification.fireDate = now;
    localNotification.alertBody = message;
    localNotification.soundName = UILocalNotificationDefaultSoundName;
    [[UIApplication sharedApplication] scheduleLocalNotification:localNotification];
    [UIApplication sharedApplication].applicationIconBadgeNumber++;
}

Also, for my needs I throw these local notifications when region monitoring detects boundary enter/exit changes. This code runs while my app is in the background, as well, and in that case they appear like push notifications.

Upvotes: 3

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