Push notification is not receiving in iOS swift? - ios

Question

I am using FCM for push notification. FCM is connected, device is registered successfully and I am able to print device token but the device is not receiving notification.
In general -> capabilities tab -> enabled push notification and remote notification in back ground mode.
Here registering device for remote notification.
func application(
_ application: UIApplication,
didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data
) {
let trimEnds:String! = {
deviceToken.description.trimmingCharacters(
in: CharacterSet(charactersIn: "<>"))
}()
let cleanToken:String! = {
trimEnds.replacingOccurrences(of: " ", with: "")
}()
let token = deviceToken.map { String(format: "%02.2hhx", $0) }.joined()
print(token)
UserDefaults.standard.set(token, forKey: "deviceToken")
UserDefaults.standard.synchronize()
#if DEBUG
//For Firebase
FIRInstanceID.instanceID().setAPNSToken(deviceToken, type: FIRInstanceIDAPNSTokenType.sandbox)
#else
FIRInstanceID.instanceID().setAPNSToken(deviceToken, type: FIRInstanceIDAPNSTokenType.prod)
#endif
print("Device Token:", token)
}
Here I called didReceiveRemoteNotification method to receive notification on the registered device:
func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable: Any]) {
print("-=-=-=-=-\nDid receive notification\n-=-=-=-",userInfo)
print("-=-=-=-=-\n")
NotificationCenter.default.post(name: Notification.Name(rawValue: "notification_recieved"), object: nil)
if userInfo.index(forKey: "chat_id") != nil {
print("messag push")
if (AppUtility?.hasValidText(User.userID))! {
//let friendImage = userInfo["path"] as! String
let chatID = userInfo["chat_id"] as! String
let friendId = userInfo["to"] as! String
let unRead = userInfo["unread"] as! String
print(unRead)
UnReadMsgs = unRead
let dictAPS = userInfo["aps"] as! NSDictionary
let dict = dictAPS["alert"] as! NSDictionary
let friendName = dict["title"] as! String
let friendMsg = dict["body"] as! String
if(UIApplication.shared.applicationState == UIApplicationState.active){
print("app is Active")
if let wd = self.window {
var VC = wd.rootViewController
if(VC is UINavigationController){
VC = (VC as! UINavigationController).visibleViewController
if(VC is ChatViewController!){
print("Chat Screen")
let chatVC : ChatViewController = VC as! ChatViewController
if chatVC.chatId == chatID{
print("Same Chat")
self.clearChatWithChatID(chatID)
}else{
CustomNotificationView.showNotificationPopUp(self.window!, name: friendName, msg: friendMsg, image: "", chat: chatID, friendID: friendId)
playSound()
print("Other Chat")
}
}else{
let nc = NotificationCenter.default
nc.post(name: Notification.Name(rawValue: "MessageGet"),
object: nil,
userInfo: ["unRead":unRead,
"date":Date()])
CustomNotificationView.showNotificationPopUp(self.window!, name: friendName, msg: friendMsg, image: "", chat: chatID, friendID: friendId)
playSound()
print("Other Screen")
}
}
}
}else{
print("app is in BG")
var vc:ChatViewController!
vc = ChatViewController(nibName: "ChatViewController", bundle: nil)
vc.chatId = chatID
vc.otherUserId = friendId
vc.otherUserName = friendName
vc.channelRef = self.channelRef.child("\(chatID)")
vc.friendImageLink = "\(resourceUrl)\("")"
let nav = UINavigationController(rootViewController: vc)
nav.isNavigationBarHidden = false
if let wd = self.window {
var VC = wd.rootViewController
if(VC is UINavigationController){
VC = (VC as! UINavigationController).visibleViewController
}
VC!.present(nav, animated: false, completion: {
})
}
}
}
}else{
let val = userInfo["aps"] as! [String:AnyObject];
let alert = NSString(string: val["alert"] as! String)
if(UIApplication.shared.applicationState == UIApplicationState.inactive || UIApplication.shared.applicationState == UIApplicationState.background)
{
showUserInfo(application, didReceiveRemoteNotification: userInfo)
}
else
{
print("top most vc \(String(describing: UIApplication.shared.keyWindow!.rootViewController!.topMostViewController().presentingViewController)) and presentedvc \(String(describing: UIApplication.shared.keyWindow!.rootViewController!.topMostViewController().presentedViewController))")
if UIApplication.shared.keyWindow!.rootViewController!.topMostViewController() is NYAlertViewController{
let newAlert = AppUtility?.getDisplayAlertController(title: "FitFlow", messageText: alert as String)
let nvVc = UIApplication.shared.keyWindow!.rootViewController!.topMostViewController().presentedViewController
nvVc?.present(newAlert!, animated: true, completion: nil)
return
}
AppUtility?.displayAlert(title:"FitFlow", messageText: alert as String,UIApplication.shared.keyWindow!.rootViewController!.topMostViewController())
}
}
}
I have tested by keeping breakpoints, it does not called didReceiveRemoteNotification method at all. How to receive push notification using above method?

Answer 1

I was also stuck with this earlier.
This requires FCM token, and not the APNS token.
To do so,
Your AppDelegate class needs to have these -
import Firebase
import UserNotifications
import FirebaseMessaging
class AppDelegate: UIResponder,
UIApplicationDelegate,
UNUserNotificationCenterDelegate,
FIRMessagingDelegate {
}
Then subscribe the messaging delegate in didFinishLaunchingWithOptions
func application(_ application: UIApplication,
didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
GIDSignIn.sharedInstance().clientID =
"Your client id"
DispatchQueue.main.async {
FIRApp.configure()
}
FIRMessaging.messaging().remoteMessageDelegate = self
if #available(iOS 10, *) {
UNUserNotificationCenter.current().requestAuthorization(options:[.badge, .alert, .sound]){ (granted, error) in }
application.registerForRemoteNotifications()
}
// iOS 9 support
else if #available(iOS 9, *) {
UIApplication.shared.registerUserNotificationSettings(UIUserNotificationSettings(types: [.badge, .sound, .alert], categories: nil))
UIApplication.shared.registerForRemoteNotifications()
}
// iOS 8 support
else if #available(iOS 8, *) {
UIApplication.shared.registerUserNotificationSettings(UIUserNotificationSettings(types: [.badge, .sound, .alert], categories: nil))
UIApplication.shared.registerForRemoteNotifications()
}
// iOS 7 support
else {
application.registerForRemoteNotifications(matching: [.badge, .sound, .alert])
}
return true
}
// You dont need didRegisterForRemoteNotificationsWithDeviceToken method anymore
func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) { }
the token you received from the delegate didRegisterForRemoteNotificationsWithDeviceToken is not useful,
You need to use the FIRInstanceID.instanceID().token()
Add below code in your applicationDidBecomeActive, this will check for FCM token refreshes, and handle that elegantly.
func applicationDidBecomeActive(_ application: UIApplication) {
NotificationCenter.default.addObserver(self, selector:
#selector(tokenRefreshNotification), name:
NSNotification.Name.firInstanceIDTokenRefresh, object: nil)
}
#objc func tokenRefreshNotification(notification: NSNotification) {
if let refreshedToken = FIRInstanceID.instanceID().token() {
print("InstanceID token: \(refreshedToken)")
UserDefaults.standard.set(refreshedToken, forKey: "deviceToken")
self.sendFCMTokenToServer(token: refreshedToken)
}
/*
Connect to FCM since connection may
have failed when attempted before having a token.
*/
else {
connectToFcm()
}
}
func updatePushNotificationWebservice() {
/*
if you want to save that token on your server
Do that here.
else use the token any other way you want.
*/
}
func connectToFcm() {
FIRMessaging.messaging().connect { (error) in
if (error != nil) {
print("Unable to connect with FCM. \(String(describing: error))")
}
else {
print("Connected to FCM.")
/*
**this is the token that you have to use**
print(FIRInstanceID.instanceID().token()!)
if there was no connection established earlier,
you can try sending the token again to server.
*/
let token = FIRInstanceID.instanceID().token()!
self.sendFCMTokenToServer(token: token)
}
}
}
For debugging use the token obtained from FIRInstanceID.instanceID().token()!, and use the push notification firebase console with same token in the >project>Cloud messaging tab.
https://console.firebase.google.com/u/0/

Answer 2

Setting priority to high from backend solves my problem.
Please check from firebase console->cloud messaging(down left item) to send push notification.