how to get FCM message in a UIViewController in Swift3? - ios

Question

I am using swift3. I want to show FCM message to tableview in a UIViewController when My app receive FCM message data.I have got my fcm data using bellow code in appDelegate..But I don't know how to get data in UIViewController.
func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: #escaping (_ options: UNNotificationPresentationOptions) -> Void) {
let message : UNNotificationPresentationOptions = .alert
//GlobalVariables.notification_message = getAlert(notification: .alert)
if UIApplication.shared.applicationState == .active { // In iOS 10 if app is in foreground do nothing.
print("active****")
print("\(notification.request.content.userInfo)")
completionHandler([message, .sound])
} else {
print("Not active****")
completionHandler([message, .badge, .sound])
}
}
Please help me
Thanks advance

Answer 1

Set a variable on your AppDelegate, then use it from either:
AppDelegate's didFinishLaunchingWithOptions on window?.rootViewController
Your view controller by calling (UIApplication.shared.delegate as? AppDelegate)?.yourVariable
I recommend setting variable in AppDelegate to nil after using it, to prevent using same notification data twice.

Answer 2

In app delegate change your code like this
func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
// FIRInstanceID.instanceID().setAPNSToken(deviceToken, type: FIRInstanceIDAPNSTokenType.sandbox)
// FIRInstanceID.instanceID().setAPNSToken(deviceToken, type: FIRInstanceIDAPNSTokenType.prod)
}
func applicationWillTerminate(_ application: UIApplication) {
UserDefaults.standard.removeObject(forKey: "check")
UserDefaults.standard.removeObject(forKey: "userid")
UserDefaults.standard.removeObject(forKey: "patient_no")
}
func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable: Any],fetchCompletionHandler completionHandler: #escaping (UIBackgroundFetchResult) -> Void) {
let state: UIApplicationState = UIApplication.shared.applicationState
if state == .active{
UIApplication.shared.applicationIconBadgeNumber = 0
if let notification = userInfo["aps"] as? [AnyHashable: Any],
let alert = notification["alert"] as? String {
print(alert)
message = alert
let localNotification = UILocalNotification()
localNotification.alertBody = alert
localNotification.soundName = UILocalNotificationDefaultSoundName
UIApplication.shared.scheduleLocalNotification(localNotification)
print("Active----")
}
}else if state == .inactive{
if let notification = userInfo["aps"] as? [AnyHashable: Any],let alert = notification["alert"] as? String {
print(alert)
message = alert
let localNotification = UILocalNotification()
localNotification.alertBody = alert
localNotification.soundName = UILocalNotificationDefaultSoundName
UIApplication.shared.scheduleLocalNotification(localNotification)
print("Inactive----")
}
}else if state == .background{
if let notification = userInfo["aps"] as? [AnyHashable: Any],let alert = notification["alert"] as? String,let sound = notification["sound"] as? String{
print(alert)
message = alert
var localNotification = UILocalNotification()
localNotification.alertBody = alert
localNotification.soundName = sound
UIApplication.shared.applicationIconBadgeNumber = number!+1
print(number!+1)
UIApplication.shared.scheduleLocalNotification(localNotification)
print("Background----")
}
}
}
then add this where you want the message back
let delegate = UIApplication.shared.delegate as! AppDelegate
let message = delegate.message
This is a sample only you want to add some condition