Android 11 FCM problem on locked screen (Kotlin)

Question

I have an application. I extended the FirebaseMessagingServie. I added it into the manifest:

        <service
        android:name=".services.AutomentoFirebaseMessagingService"
        android:directBootAware="true"
        android:exported="false">
        <intent-filter>
            <action android:name="com.google.firebase.MESSAGING_EVENT" />
        </intent-filter>
    </service>

I also overided the onMessageRecived method

 override fun onMessageReceived(remoteMessage: RemoteMessage) {
    Log.d(TAG, "Topic message: " + remoteMessage.from)
    super.onMessageReceived(remoteMessage)

    val powerIntent = Intent(Intent.ACTION_POWER_CONNECTED)
    context?.sendBroadcast(powerIntent)

    wakeUpScreen()

    val intent = Intent(this, MainActivity::class.java)
    val pendingIntent = PendingIntent.getActivity(
        this,
        REQUEST_CODE, intent, PendingIntent.FLAG_ONE_SHOT
    )
    val channelId = getString(R.string.default_notification_channel_id)
    val notificationBuilder: NotificationCompat.Builder = NotificationCompat.Builder(this, channelId)
        .setSmallIcon(R.drawable.ic_rendeleseim_white_48)
        .setContentTitle(remoteMessage.notification!!.title)
        .setContentText(remoteMessage.notification!!.body)
        .setAutoCancel(true)
        .setContentIntent(pendingIntent)
        .setOngoing(true)
        .setPriority(NotificationCompat.PRIORITY_HIGH)
        .setLights(Color.RED, 500, 500)
    val notificationManager = getSystemService(NOTIFICATION_SERVICE) as NotificationManager

    val channel = NotificationChannel(
        channelId,
        "Pushnotification",
        NotificationManager.IMPORTANCE_HIGH,
    ).apply {
        lockscreenVisibility = Notification.VISIBILITY_PUBLIC
    }
    
    notificationManager.createNotificationChannel(channel)
    val notification = notificationBuilder.build()
    notification.flags = notification.flags or Notification.FLAG_INSISTENT
    notificationManager.notify(REQUEST_CODE, notification)
}

private fun wakeUpScreen() {
    val powerManager = getSystemService(POWER_SERVICE) as PowerManager
    val isScreenOn: Boolean = powerManager.isInteractive
    if (!isScreenOn) {
        val wakeLock: PowerManager.WakeLock =
            (getSystemService(Context.POWER_SERVICE) as PowerManager).run {
                newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "MentoMano::WakelockTag").apply {
                    acquire(1000)
                }
            }
    }

    val pm = context!!.getSystemService(POWER_SERVICE) as PowerManager
    val isScreenOn2 = pm.isInteractive // check if screen is on

    if (!isScreenOn2) {
        val wl = pm.newWakeLock(PowerManager.SCREEN_DIM_WAKE_LOCK or PowerManager.ACQUIRE_CAUSES_WAKEUP, "myApp:notificationLock")
        wl.acquire(3000) //set your time in milliseconds
    }
}

I have the API key and I get the token. I can send a notification and the user get it when the app is runing, when it is in the background and it is not running.

My problem: the user doesn't get the notification when the screen is locked. I configured the phone. I can get pushnotification from the facebook Messenger when the phone is locked, but my notification arrives only when the user opens the screen or the screen is opened.

Having same problem , let me know if you found the solution allready.... — Vikram Mali, Oct 22 '22 at 09:07

score 0 · Accepted Answer · answered Aug 31 '23 at 08:28

If it helps somebodey I used this solution.

I kept the manifest as in the question

In inherited from FirebaseMessagingService

class MyMessagingService: FirebaseMessagingService {

And I used this onMessageRecibed function

 override fun onMessageReceived(remoteMessage: RemoteMessage) {
        Log.d(TAG, "Topic message: " + remoteMessage.from)
        super.onMessageReceived(remoteMessage)

        val powerIntent = Intent(Intent.ACTION_POWER_CONNECTED)
        context?.sendBroadcast(powerIntent)

        wakeUpScreen()

        val intent = Intent(this, MainActivity::class.java)
        val pendingIntent = PendingIntent.getActivity(
            this,
            REQUEST_CODE,
            intent,
            PendingIntent.FLAG_IMMUTABLE
        )
        val channelId = getString(R.string.default_notification_channel_id)
        val notificationBuilder: NotificationCompat.Builder = NotificationCompat.Builder(this, channelId)
            .setSmallIcon(R.drawable.ic_rendeleseim_white_48)
            .setContentTitle(remoteMessage.notification!!.title)
            .setContentText(remoteMessage.notification!!.body)
            .setAutoCancel(true)
            .setContentIntent(pendingIntent)
            .setOngoing(true)
            .setPriority(NotificationCompat.PRIORITY_HIGH)
            .setLights(Color.RED, 500, 500)
        val notificationManager = getSystemService(NOTIFICATION_SERVICE) as NotificationManager

        val channel = NotificationChannel(
            channelId,
            "Pushnotification",
            NotificationManager.IMPORTANCE_HIGH,
        ).apply {
            lockscreenVisibility = Notification.VISIBILITY_PUBLIC
        }

        notificationManager.createNotificationChannel(channel)
        val notification = notificationBuilder.build()
        notification.flags = notification.flags or Notification.FLAG_INSISTENT
        notificationManager.notify(REQUEST_CODE, notification)
    }

This is the wakeUpScreen method

  private fun wakeUpScreen() {
        val powerManager = getSystemService(POWER_SERVICE) as PowerManager
        val isScreenOn: Boolean = powerManager.isInteractive
        if (!isScreenOn) {
            val wakeLock: PowerManager.WakeLock =
                (getSystemService(Context.POWER_SERVICE) as PowerManager).run {
                    newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "MentoMano::WakelockTag").apply {
                        acquire(1000)
                    }
                }
        }

        val pm = baseContext.getSystemService(POWER_SERVICE) as PowerManager
        val isScreenOn2 = pm.isInteractive // check if screen is on

        if (!isScreenOn2) {
            val wl = pm.newWakeLock(PowerManager.SCREEN_DIM_WAKE_LOCK or PowerManager.ACQUIRE_CAUSES_WAKEUP, "myApp:notificationLock")
            wl.acquire(3000) //set your time in milliseconds
        }
    }

Android 11 FCM problem on locked screen (Kotlin)

1 Answers1