Flutter Local Notification not working on iOS with onesignal

[enadcs]

i already implement and used the pluign flutter_local_notifications and it was working fine , until i added the onesignal pluign , it stopped working on ios but working fine on android .

it seems that onesignal is blocking the application from displaying any local notification but its own notification or implementation for that

(your description here)

Environment

flutter 3.0.1
ios 15.0
android 15

1. install flutter_local_notifications: ^9.0.0
2. install onesignal_flutter: ^3.1.0
3. try to display a local notification in any iOS device , it will not show anything

Anything else:

it show this error

onesignalUserNotificationCenter:willPresentNotification:withCompletionHandler:

[emawby]

@enadcs Hello thank you for reaching out. It looks like this was reported a few years ago as well. Could you test to see if the resolution here helps still?

[muccy]

Pasting in AppDelegate

    override func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
        super.userNotificationCenter(center, willPresent: notification, withCompletionHandler: completionHandler)
    }
    
    override func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {
        super.userNotificationCenter(center, didReceive: response, withCompletionHandler: completionHandler)
    }

Seems to works. I have to do more tests to be sure

[Smartiiez]

@muccy thanks for the tip 👌

[luis901101]

Hi @FullstackWEB-developer

Uncomment this in your AppDelegate.swift:

if #available(iOS 10.0, *) {
  UNUserNotificationCenter.current().delegate = self as? UNUserNotificationCenterDelegate
}

[fimpact-nicole]

Hi @FullstackWEB-developer

Uncomment this in your AppDelegate.swift:

if #available(iOS 10.0, *) {
  UNUserNotificationCenter.current().delegate = self as? UNUserNotificationCenterDelegate
}

@luis901101 Thank you so much!

[ospaarmann]

I think this is not a solution. It will enable flutter_local_notifications again, but OneSignal notifications will only work when the app is in foreground.

Pasting in AppDelegate

    override func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
        super.userNotificationCenter(center, willPresent: notification, withCompletionHandler: completionHandler)
    }
    
    override func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {
        super.userNotificationCenter(center, didReceive: response, withCompletionHandler: completionHandler)
    }

Seems to works. I have to do more tests to be sure