Service stopForeground(false);

 /**
     * 通知作成
     */
    private void createNotification() {
        // Android8以上通知表示
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            Context context = getApplicationContext();
            
            Intent openUi = new Intent(context, MainActivity.class);
            openUi.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
            openUi.setAction(Intent.ACTION_MAIN);
            openUi.addCategory(Intent.CATEGORY_LAUNCHER);

            PendingIntent pendingIntent = PendingIntent.getActivity(context, 0x01, openUi, PendingIntent.FLAG_CANCEL_CURRENT);

            NotificationManager notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
            NotificationChannel channel = new NotificationChannel(NOTIFICATION_CHANNEL_ID, mAppName, NotificationManager.IMPOR