android_fcm_client.kt

class CryptoAlertMessagingService: FirebaseMessagingService() {

    override fun onMessageReceived(message: RemoteMessage?) {
        message?.notification?.let {
            Log.d(TAG, "Message Notification Body: ${it.body}")
            val mainHandler = Handler(mainLooper)
            mainHandler.post {
                Toast.makeText(applicationContext, "${it.body}", Toast.LENGTH_SHORT).show()
            }
        }
    }

    companion object {
        private const val TAG = "MessagingService"
    }
}