Android GCM中的通知生成问题

我遇到以下两个问题：

第一个问题：

我必须注册使用同一设备的两个客户，因此他们具有相同的注册ID。

当我从服务器端向这两个客户发送报价时，显示的通知应取决于登录的客户。

例如（见图）：

在我的应用程序中，我有一个客户登录表。以这种形式，如果用户gnanavel登录，则该应用程序必须仅接收他的报价，而不是其他人的报价。

同样，如果用户jeya登录，则该应用程序必须仅接收她的报价，而不是其他人的报价。

Currently the app is receiving both offers.

EDIT:

I have created login status field in my database.if my customer logs in the device means received the notification for his offers alone.i didn't get other's offers.its working well.

i have checked the condition while click the offer button:

 $getregid = mysqli_query($con,"select * from pim_customers where customer_id='$customer_id' and gcm_regid='$regId' and loginstatus='Y'");

i wrote these condition means my first problem is solved.but raised another problem.

The other problem is.,

When admin person enters some offer, the customer has to receive the notification on the device only when logged in the customer. Otherwise, the notification shouldn't be received. This part is working well.

The problem is, when my customer is logged out for a long time, and during that time the admin person entered more offers.

If the customer logs in the app after 2 days, he should receive all the pending messages. How can I get the pending messages?

admin side enters offers that time the customer logged out means loginstatus is 'N' in database.so how can execute these condition and receive the notification.

 $getregid = mysqli_query($con,"select * from pim_customers where customer_id='$customer_id' and gcm_regid='$regId' and loginstatus='Y'");

This is my server side code executed when clicking the offer button :

if (isset($_GET["regId"]) && isset($_GET["customer_id"]) && isset($_GET["message"])) {
  $regId = $_GET["regId"];
  $message = $_GET["message"];
  $customer_id = $_GET["customer_id"];
  include_once './GCM.php';
  $getregid = mysqli_query($con,"select * from pim_customers where customer_id='$customer_id' and gcm_regid='$regId' and loginstatus='Y'");
  $count1=mysqli_num_rows($getregid);
  while($row = mysqli_fetch_array($getregid))
  {
    $id=$row['customer_id'];
  }
  if (mysqli_num_rows($getregid) > 0) {
    $query = mysqli_query($con,"select count(offer) as count from pim_productdeal where customer_id='$id' and offer!=''");
    $count = mysqli_fetch_array($query);
    $msg = $count['count'];
    $gcm = new GCM();
    $registatoin_ids = array($regId);
    $message = array("price" => $msg." "."The offers received");
    $result = $gcm->send_notification($registatoin_ids, $customer_id, $message);
    echo $result;
  }
}

This is my Android side code:

public class GCMIntentService extends GCMBaseIntentService {

  private static final String TAG = "GCMIntentService";
  String regId;

  public GCMIntentService() {
    super(SENDER_ID);
  }

  @Override
  protected void onRegistered(Context context, String registrationId) {
    ServerUtilities.register(context, RegisterActivity.first_name, RegisterActivity.last_name, RegisterActivity.email, RegisterActivity.password, registrationId);
  }

  @Override
  protected void onUnregistered(Context context, String registrationId) {
    Log.i(TAG, "Device unregistered");
    displayMessage(context, getString(R.string.gcm_unregistered));
    ServerUtilities.unregister(context, registrationId);
  }

  @Override
  protected void onMessage(Context context, Intent intent) {
    Log.i(TAG, "Received message");
    GCMRegistrar.checkDevice(this);
    GCMRegistrar.checkManifest(this);
    regId = GCMRegistrar.getRegistrationId(this);
    String message = intent.getExtras().getString("price");
    displayMessage(context, message);
    if(Constants.response != null) {
      generateNotification(context,message);
    }
  }

  @Override
  protected void onDeletedMessages(Context context, int total) {
    Log.i(TAG, "Received deleted messages notification");
    String message = getString(R.string.gcm_deleted, total);
    displayMessage(context, message);
    // notifies user
    generateNotification(context,message);
  }

  @Override
  public void onError(Context context, String errorId) {
    Log.i(TAG, "Received error: " + errorId);
    displayMessage(context, getString(R.string.gcm_error, errorId));
  }

  @Override
  protected boolean onRecoverableError(Context context, String errorId) {
    // log message
    Log.i(TAG, "Received recoverable error: " + errorId);
    displayMessage(context, getString(R.string.gcm_recoverable_error,
            errorId));
    return super.onRecoverableError(context, errorId);
  }

  private static void generateNotification(Context context,String message) {
    int icon = R.drawable.icon;
    long when = System.currentTimeMillis();
    NotificationManager notificationManager = (NotificationManager)
            context.getSystemService(Context.NOTIFICATION_SERVICE);
    Notification notification = new Notification(icon, message, when);

    String title = context.getString(R.string.app_name);

    Intent notificationIntent = new Intent(context, MyDealProducts.class);
    notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP |
            Intent.FLAG_ACTIVITY_SINGLE_TOP);
    PendingIntent intent =
            PendingIntent.getActivity(context, 0, notificationIntent, 0);
    notification.setLatestEventInfo(context, title, message, intent);
    notification.flags |= Notification.FLAG_AUTO_CANCEL;
    notification.defaults |= Notification.DEFAULT_SOUND;
    notification.defaults |= Notification.DEFAULT_VIBRATE;
    notificationManager.notify(0, notification);      
  }
}