android显示通知栏Notification以及自定义Notification的View

遇到的最大的问题是监听不到用户清除通知栏的广播。所以是不能监听到的。

自定义通知栏的View，然后service运行时更改notification的信息。

/**
     * Show a notification while this service is running.
     * 在service运行时，显示通知信息
     */
    public void showNotification() {
　　　　　NotificationManager mNM = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
        CharSequence text = getText(R.string.app_name);
        Notification notification = new Notification(R.drawable.img_step_counter_user, null,
                System.currentTimeMillis());
　　　　　　// 标志位的设置：应设置为可以自动取消，这样用户就可以取消他，如果设置为Intent.FLAG_ACTIVITY_CLEAR_TOP | Notification.FLAG_ONGOING_EVENT;则会一直显示通知
//        notification.flags = Intent.FLAG_ACTIVITY_CLEAR_TOP | Notification.FLAG_ONGOING_EVENT;
        notification.flags = Notification.FLAG_AUTO_CANCEL;
        Intent pedometerIntent = new Intent();
        pedometerIntent.setComponent(new ComponentName(this, StepCounterHomePageActivity.class));
        pedometerIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
                pedometerIntent, 0);
        notification.setLatestEventInfo(this, text,
                getText(R.string.notification_subtitle)+":  "+SensorData.stepNum+" 步", contentIntent);
　　　　// 其中R.layout.notification是一个布局文件
        notification.contentView = new RemoteViews(getPackageName(),R.layout.notification);
        notification.contentView.setViewVisibility(R.id.usermessage, View.VISIBLE);
        notification.contentView.setViewVisibility(R.id.notification_background, View.GONE);
        notification.contentView.setViewVisibility(R.id.notification_layout, View.GONE);
        notification.contentView.setTextViewText(R.id.tv_user_name_step, "掌上医生");
        notification.contentView.setTextViewText(R.id.tv_use_date_step, "计算步数： "+SensorData.stepNum+"步");
        
        mNM.notify(R.string.app_name, notification);
    }