安卓通知栏（API 16前后版本）

/**
     * 提示用户当前报文容量超过50M
     */
    private void notifyPacketTooLarge() {
        NotificationManager mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
        //定义通知栏展现的内容信息
        CharSequence tickerText = "当前报文容量超过50M";

        Notification notification = new Notification(R.drawable.ic_launcher, tickerText, System.currentTimeMillis());
        notification.setLatestEventInfo(mContext, "报文容量过大", "报文容量已经超过50M！", null); 
        /*Intent notificationIntent = new Intent(this, BootStartDemo.class);
        PendingIntent contentIntent = PendingIntent.getActivity(this, 0,notificationIntent, 0);
        notification.setLatestEventInfo(context, contentTitle, contentText, contentIntent);*/
        mNotificationManager.notify(, notification);
    }

    /**
     * 提示用户当前报文容量超过50M，API 16以后版本
     */
    @SuppressLint("NewApi")
    private void notifyPacketTooLargeNew() {
        NotificationManager mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
        //定义通知栏展现的内容信息
        CharSequence tickerText = "当前报文容量超过50M";
        Notification notification = new Notification.Builder(mContext)
        .setTicker(tickerText)
        .setContentTitle("报文容量过大")
        .setContentText("当前正在抓取的报文容量已经超过50M，请注意")
        .setWhen(System.currentTimeMillis())
        .setSmallIcon(R.drawable.ic_launcher)
        .build();
        mNotificationManager.notify(, notification);
    }