Firebase notifications did not come when I kill the app in android

[ArigarasuthanRepo]

I am developing an android application using kotlin. I am using firebase notifications in my app.notifications arrive when the app in foreground and background.but when I killed the app notification did not come. How to fix the issue?

I am using latest firebase version

implementation 'com.google.firebase:firebase-messaging:20.2.0'

Implementing my messaging service:

class MyFirebaseMessagingService : FirebaseMessagingService()
{
    lateinit var notificationManager: NotificationManager

    private var channelId:String = "attendance-taker.notifications"

    lateinit var builder: NotificationCompat.Builder

    var notificationId: Int = 123


    //var prefs:SharedPreferences = applicationContext.getSharedPreferences(applicationContext.getString(R.string.app_name), Context.MODE_PRIVATE)
    override fun onMessageReceived(classinformation: RemoteMessage) {
         PushNotification()

        }

        // Check if message contains a notification payload.
        if (classinformation.notification != null) {

        }

    }

    override fun onNewToken(token: String) {
        Log.d("TokenPrint", token)
    }



    private fun PushNotification() {
        notificationManager = this.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            createNotificationChannel()
        }
        val intent = Intent(this, HomeActivity::class.java).apply {
            flags = Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_TASK
        }
        var content:String = "Helloooooooooooooo"
        val pendingIntent: PendingIntent = PendingIntent.getActivity(this, 0, intent, 0)
        builder = NotificationCompat.Builder(this, channelId)
            .setContentTitle(getString(R.string.app_name))
            .setContentText(content)
            .setContentIntent(pendingIntent)
            .setSmallIcon(R.mipmap.ic_launcher)
            .setPriority(NotificationCompat.PRIORITY_HIGH)
            .setDefaults(NotificationCompat.DEFAULT_ALL)
            .setAutoCancel(true)
        notificationManager.notify(notificationId, builder.build())
    }


    private fun createNotificationChannel() {

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            notificationManager = this.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
            val name = getString(R.string.app_name)
            val descriptionText = ""
            val importance = NotificationManager.IMPORTANCE_HIGH
            val channel = NotificationChannel(channelId, name, importance).apply {
                description = descriptionText
                enableLights(true)
                lightColor = Color.GREEN
                enableVibration(false)
            }
            notificationManager.createNotificationChannel(channel)
        }
    }

}

Declared in AndoridManifest.xml like this

<!-- Firebase Messaging service -->
<service
    android:name=".utils.MyFirebaseMessagingService"
    android:exported="false">
    <intent-filter>
        <action android:name="com.google.firebase.MESSAGING_EVENT" />
    </intent-filter>
</service>

Only the foreground notification arrives but when I killed the app notifications not came. Help to fix the issue.

I am using Android emulator and android version is android-10

[google-oss-bot]

This issue does not seem to follow the issue template. Make sure you provide all the required information.

[samtstern]

@ArigarasuthanRepo this has been discussed extensively, please see another thread such as #4 or #368

[ArigarasuthanRepo]

@ArigarasuthanRepo this has been discussed extensively, please see another thread such as #4 or #368

this thread I saw already none of them solved my issue. that's why I posted the issue.