cancelAllLocalNotifications在iOS10中不起作用

Question

I want to remove all previous local notification from NotificationCenter when adding new notifications. But it is working in iOS9.0 and lower version but in iOS 10 it fires multiple local notifications. So it seems like cancelAllLocalNotifications not clearing notifications.

Code compile successfully in iOS10.

UIApplication.shared.cancelAllLocalNotifications()

Answer 1

For iOS 10, Swift 3.0

cancelAllLocalNotifications deprecated from iOS 10.

 @available(iOS, introduced: 4.0, deprecated: 10.0, message: "Use UserNotifications Framework's -[UNUserNotificationCenter removeAllPendingNotificationRequests]") open func cancelAllLocalNotifications() 

You will have to add this import statement,

import UserNotifications

Get notification center. And perform the operation like below

let center = UNUserNotificationCenter.current()
center.removeAllDeliveredNotifications() // To remove all delivered notifications
center.removeAllPendingNotificationRequests() // To remove all pending notifications which are not delivered yet but scheduled.

If you want to remove single or multiple specific notification, you can achieve it by below method.

center.removeDeliveredNotifications(withIdentifiers: ["your notification identifier"])

Hope it helps..!!

Answer 2

For iOS 10, Objective C :

UNUserNotificationCenter *center = [UNUserNotificationCenter currentNotificationCenter];
[center removeAllDeliveredNotifications];
[center removeAllPendingNotificationRequests];

Swift 4 :

UNUserNotificationCenter.current().removeAllPendingNotificationRequests()

If you want to list all notifications:

func listPendingNotifications() {

    let notifCenter = UNUserNotificationCenter.current()
    notifCenter.getPendingNotificationRequests(completionHandler: { requests in
        for request in requests {
            print(request)
        }
    })
}

Answer 3

For iOS 10, You can use this way for removing all of Local Notification. I have just tested, It's working.

    NSArray *arrayOfLocalNotifications = [[UIApplication sharedApplication] scheduledLocalNotifications] ;
    for (UILocalNotification *localNotification in arrayOfLocalNotifications) {
        [[UIApplication sharedApplication] cancelLocalNotification:localNotification] ;
    }