How to set single notification for multiple alarm manager at same time

Question

My application requirement is User can set multiple type reminder for same time, so at that time notification is pop up along with it's sound

My code is:

public class ReminderService extends Service {
    int id;

    @Override
    public IBinder onBind(Intent intent) {
        // TODO Auto-generated method stub
        return null;
    }

    @Override
    public void onStart(final Intent intent, int startId) {
        // TODO Auto-generated method stub
        super.onStart(intent, startId);
        if (intent != null) {
            new Thread() {
                public void run() {
                    id = intent.getIntExtra("ID");
                    showNotification(id);
                }
            }.start();

        }
    }

    Handler mHandler = new Handler();

    public void showNotification(final int id) {
        mHandler.post(new Runnable() {
            @Override
            public void run() {
                // TODO Auto-generated method stub

                try {
                    Notification notification = new Notification(
                            R.drawable.icon, getString(R.string.app_name),
                            System.currentTimeMillis());
                    notification.sound = Uri.parse("android.resource://"
                            + getPackageName() + "/" + R.raw.pluck_b);
                    Intent i = new Intent();
                    i.setClass(ReminderService.this, MyClass.class);
                    i.setFlags(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT);
                    notification.setLatestEventInfo(ReminderService.this,
                            getString(R.string.app_name), message,
                            PendingIntent.getActivity(ReminderService.this, 0,
                                    i, 0));
                    NotificationManager nm = (NotificationManager) ReminderService.this
                            .getSystemService(Context.NOTIFICATION_SERVICE);
                    notification.flags |= Notification.FLAG_AUTO_CANCEL;
                    nm.notify((int) id, notification);

                } catch (Exception e) {
                }
            }
        });
    }
}

Suppose user set 3 reminder for 10:30, so it will call 3 times this service, and 3 time different notification will call, so notification sound is also not proper as it create 3 different notification.

So now what have to do, I want to call single notification for these 3 different reminder using remote view, so sound will single.

But to create remote view how can I identify number of alarm at same time.

Please any one help me to identify best approaches, what I have to do in this case so notification sound would be single for different notification.

Answer 1

You could implement the Observer Pattern .

This sets up a one-to-many relationship between classes, which allows you to notify multiple classes from one event.