更改通知消息

Question

我已经下载了IntentService，我可以将进度下载到通知中并在进度发生变化时进行更改吗？

private void sendNotification() {
    mNotificationManager = (NotificationManager)
           this.getSystemService(Context.NOTIFICATION_SERVICE);

    PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
        new Intent(this, MainActivity.class), 0);

    NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(this)
    .setSmallIcon(R.drawable.ic_launcher)
    .setContentTitle("Downloading")
    .setStyle(new NotificationCompat.BigTextStyle()
    .bigText("Downloaded "+progress+" %"));

    mBuilder.setContentIntent(contentIntent);
    mNotificationManager.notify(NOTIFICATION_ID, mBuilder.build());
}

在方法onHandleIntent（）中，我开始下载，我需要更改有关进度更改的通知文本。