Receiving background notification in iOS using OneSignal - ios

Question

I am creating an iOS app using swift. I have integrated onesignal SDK for push notification. Now i can receive and manage notification when the app is in foreground. when the app is in background,i can receive notification in notification panel,but i cannot receive it and manage in appdelegate.In appdelegate where can i receive notifiation when the app is in background?Here i am sharing my code. Should i change anything in payload?
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
let notificationReceivedBlock: OSHandleNotificationReceivedBlock = { notification in
print("Received Notification: \(notification!.payload.notificationID)")
}
let notificationOpenedBlock: OSHandleNotificationActionBlock = { result in
// This block gets called when the user reacts to a notification received
let payload: OSNotificationPayload = result!.notification.payload
var fullMessage = payload.body
print("Message = \(fullMessage)")
if payload.additionalData != nil {
if payload.title != nil {
let messageTitle = payload.title
print("Message Title = \(messageTitle!)")
}
let additionalData = payload.additionalData
if additionalData?["actionSelected"] != nil {
fullMessage = fullMessage! + "\nPressed ButtonID: \(additionalData!["actionSelected"])"
}
}
}
let onesignalInitSettings = [kOSSettingsKeyAutoPrompt: false,
kOSSettingsKeyInAppLaunchURL: true]
OneSignal.initWithLaunchOptions(launchOptions,
appId: ONESIGNALAPP_I",
handleNotificationReceived: notificationReceivedBlock,
handleNotificationAction: notificationOpenedBlock,
settings: onesignalInitSettings)
OneSignal.inFocusDisplayType = OSNotificationDisplayType.notification
return true
}

Answer 1

You need to implement these methods in AppDelegate:
extension AppDelegate {
#available(iOS 10.0, *)
func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: #escaping () -> Void) {
//use response.notification.request.content.userInfo to fetch push data
}
// for iOS < 10
func application(_ application: UIApplication, didReceive notification: UILocalNotification) {
//use notification.userInfo to fetch push data
}
func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable : Any], fetchCompletionHandler completionHandler: #escaping (UIBackgroundFetchResult) -> Void) {
//use userInfo to fetch push data
}
}