android发送通知及更新通知

/**
     * 发送通知
     */
    public void setNotification(){
        /**  start */
        //1.得到NotificationManager：
        mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
        // 创立一个新的Notification对象，并添加图标
        notification = new Notification();
        // 通知显示的图标
        notification.icon = R.drawable.icon_bao;
        // 在状况栏(Status Bar)显示的通知文本提醒，如：
        notification.tickerText = "收到一个新的通知";
        //发出提醒音，如：
        notification.defaults |= Notification.DEFAULT_SOUND;//或
//        notification.sound = Uri.parse("file:///sdcard/notification/ringer.mp3");//或
//        notification.sound = Uri.withAppendedPath(MediaStore.Audio.Media.INTERNAL_CONTENT_URI, "6");
        //填充Notification的各个属性：
        Context context = getApplicationContext();
        CharSequence contentTitle = "通知题目";
        CharSequence contentText = "通知内容";
        //点击通知跳转到哪里
        Intent notificationIntent = new Intent(this, CreateMemberActivity.class);
        PendingIntent contentIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0);
        notification.setLatestEventInfo(context, contentTitle, contentText, contentIntent);
        //在通知栏上点击此通知后主动消除此通知
        notification.flags |= Notification.FLAG_AUTO_CANCEL;
        //LED灯闪耀
        notification.defaults |= Notification.DEFAULT_LIGHTS;
//        或可以自己的LED提醒模式:
//        notification.ledARGB = 0xff00ff00;
//        notification.ledOnMS = 300; //亮的时光
//        notification.ledOffMS = 1000; //灭的时光
//        notification.flags |= Notification.FLAG_SHOW_LIGHTS;
        //手机振动
        notification.defaults |= Notification.DEFAULT_VIBRATE;
//        或
//        long[] vibrate = {0,100,200,300};
//        notification.vibrate = vibrate;
        //发送通知
        mNotificationManager.notify(1, notification);
        /**  end */
    }/**
     * 发送通知
     */
    public void setNotific