builder = new NotificationCompat.Builder(Objects.requireNonNull(getContext()),"M_CH_ID");
    builder.setSmallIcon(R.drawable.icon_notificacao)
            .setContentTitle("RPfm 105.3")
            .setContentText("Ao Vivo")
            .setAutoCancel(true);
    NotificationManager notifyManager = (NotificationManager) Objects.<FragmentActivity>requireNonNull(getActivity()).getSystemService(Context.NOTIFICATION_SERVICE);
    if(notifyManager != null) {
        notifyManager.notify(1, builder.build());
    }