Question

我在通知/状态栏中使用秒表。

我使用contentText在getFormattedElapsedTime()中获得秒表。它工作但是当我关闭应用程序时停止。即使应用关闭，我该如何工作呢？

private NotificationManager m_notificationMgr;
private Notification m_notification;
   // Timer to update the ongoing notification
 private final long mFrequency = 100;    // milliseconds
    private final int TICK_WHAT = 2; 
    private Handler mHandler = new Handler() {
        public void handleMessage(Message m) {
            updateNotification();
            sendMessageDelayed(Message.obtain(this, TICK_WHAT), mFrequency);
        }
    };

    @Override
    public void onCreate() {
        super.onCreate();
        Log.d(TAG, "created");

        m_stopwatch = new Stopwatch();
        m_notificationMgr = (NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);

        createNotification();
    }


public void createNotification() {
        Log.d(TAG, "creating notification");


        int icon = R.drawable.icon;
        CharSequence tickerText = "Meb";
        long when = System.currentTimeMillis();

        m_notification = new Notification(icon, tickerText, when);
        m_notification.flags |= Notification.FLAG_ONGOING_EVENT;
        m_notification.flags |= Notification.FLAG_NO_CLEAR;
    }

    public void updateNotification() {
        // Log.d(TAG, "updating notification");

        Context context = getApplicationContext();
        CharSequence contentTitle = "Mebr";
        CharSequence contentText = getFormattedElapsedTime();

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

        // the next two lines initialize the Notification, using the configurations above
        m_notification.setLatestEventInfo(context, contentTitle, contentText, contentIntent);
        m_notificationMgr.notify(NOTIFICATION_ID, m_notification);
    }

    public void showNotification() {
        Log.d(TAG, "showing notification");

        updateNotification();       
        mHandler.sendMessageDelayed(Message.obtain(mHandler, TICK_WHAT), mFrequency);
    }

    public void hideNotification() {
        Log.d(TAG, "removing notification");

        m_notificationMgr.cancel(NOTIFICATION_ID);
        mHandler.removeMessages(TICK_WHAT);
    }

Answer 1

您需要更新Service的通知，即使在暂停或停止活动后，该通知也会继续运行。

使用StopWatch通知

1 个答案: