Show an alert even when the app is not running

Question

I am doing an app in which I want the user to be notified of something even when the app is not running. Just like in the uber driver app the user is alerted to accept/Reject a ride request. Is this possible with VoIP and PushKit? Which is the best way doing it ?

Answer 1

Yes, this is possible with pushkit silent notification.

Once you receive push kit payload you have to schedule local notification.

You can make local notification interactive with accept / Reject ride request and do appropriate thing on tap event like API calling, SQLite etc.

Refer below code. I have drafted this as per VOIP calling feature, you can draft as per your requirement.

func pushRegistry(registry: PKPushRegistry!, didReceiveIncomingPushWithPayload payload: PKPushPayload!, forType type: String!) {
        // Process the received push

        var arrTemp = [NSObject : AnyObject]()
        arrTemp = payload.dictionaryPayload

        let dict : Dictionary <String, AnyObject> = arrTemp["aps"] as! Dictionary<String, AnyObject>


        if "IfUserHasLoggedInWithApp" // Check this flag then only proceed
        {                

            if UIApplication.sharedApplication().applicationState == UIApplicationState.Background || UIApplication.sharedApplication().applicationState == UIApplicationState.Inactive
            {

                if "CheckForIncomingCall" // Check this flag to know incoming call or something else
                {

                    var strTitle : String = dict["alertTitle"] as? String ?? ""
                    let strBody : String = dict["alertBody"] as? String ?? ""
                    strTitle = strTitle + "\n" + strBody

                    let notificationIncomingCall = UILocalNotification()

                    notificationIncomingCall.fireDate = NSDate(timeIntervalSinceNow: 1)
                    notificationIncomingCall.alertBody =  strTitle
                    notificationIncomingCall.alertAction = "Open"
                    notificationIncomingCall.soundName = "SoundFile.mp3"
                    notificationIncomingCall.category = dict["category"] as? String ?? ""

                    notificationIncomingCall.userInfo = "As per payload you receive"

                    UIApplication.sharedApplication().scheduleLocalNotification(notificationIncomingCall)

                    }
                    else
                    {
                        //  something else
                    }

        }
    }

}

Refer more things about pushkit integration and payload.

https://github.com/hasyapanchasara/PushKit_SilentPushNotification