Failed to get response points from the board proposal?

I have developed an android app. In this application, I have included tapjoy

and everbadge offerwalls

. On tapjoy offerwall, I call the following method to show the offervoir.

TapjoyConnect.getTapjoyConnectInstance().showOffers();

      

        
        
        
      

    

but when I complete the sentence, I cannot see the tap points in the toast. Below is the code I wrote for tapjoy offerwall

.

public class TapjoyOfferwall implements TapjoyEarnedPointsNotifier, TapjoyNotifier{

    private Activity context;
    //private AppPreferences appPreferences;

    private String AppId_TapJoy = "bba49f11-b87f-4c0f-9632-21aa810dd6f1";
    private String SecretKey_TapJoy = "yiQIURFEeKm0zbOggubu";

    private String displayText = "";
    boolean update_text = false;
    boolean earnedPoints = false;

    int point_total;
    String currency_name;





    public TapjoyOfferwall(Activity context) {
        super();
        this.context = context;
        //appPreferences = new AppPreferences(context);

        // Enables logging to the console.
        TapjoyLog.enableLogging(true);

        // OPTIONAL: For custom startup flags.
        Hashtable<String, String> flags = new Hashtable<String, String>();
        flags.put(TapjoyConnectFlag.ENABLE_LOGGING, "true");

        // Connect with the Tapjoy server. Call this when the application first starts.
        // REPLACE THE APP ID WITH YOUR TAPJOY APP ID.
        // REPLACE THE SECRET KEY WITH YOUR SECRET KEY.
        TapjoyConnect.requestTapjoyConnect(context,AppId_TapJoy, SecretKey_TapJoy,flags);
        //TapjoyConnect.getTapjoyConnectInstance().setUserID(""+appPreferences.GetUserID());

        // Set our earned points notifier to this class.
        TapjoyConnect.getTapjoyConnectInstance().setEarnedPointsNotifier(this);
        //LaunchTapJoyOfferwall();
    }

    @Override
    public void earnedTapPoints(int amount)
    {
        earnedPoints = true;
        update_text = true;
        displayText = "You've just earned " + amount + " Tap Points!";

        // We must use a handler since we cannot update UI elements from a different thread.
        System.out.println("displayText :: "+displayText);
        OEPUtil.showAppToast(context, displayText);
    }

    public void LaunchTapJoyOfferwall() {
        TapjoyConnect.getTapjoyConnectInstance().showOffers();
    }

    @SuppressWarnings("deprecation")
    public void SetBannerAutoRefresh() {
        TapjoyConnect.getTapjoyConnectInstance().enableBannerAdAutoRefresh(false);
    }

    public void SetShutDown() {
        TapjoyConnect.getTapjoyConnectInstance().sendShutDownEvent();
    }
}

      

        
        
        
      

    

this class I am accessing in one of the activity classes by clicking a button.

Please let me know what I am doing, right or wrong, and how can I get points?