Sample TapJoy Unity integration from the TapJoy website.

TapjoyIntegration.cs

using UnityEngine;
using System.Collections;
using TapjoyUnity;

public class TapjoyIntegration {

  public static TJPlacement placementAppLaunch;
  public static TJPlacement placementAppClose;
  public static GameObject bgmObject;

  public static void Init() {
    // Connect
    Tapjoy.OnConnectSuccess += HandleOnConnectSuccess;
    Tapjoy.OnConnectFailure += HandleOnConnectFailure;

    // Video
    Tapjoy.OnVideoStart += HandleOnVideoStart;
    Tapjoy.OnVideoError += HandleOnVideoError;
    Tapjoy.OnVideoComplete += HandleOnVideoComplete;

    // View
    Tapjoy.OnViewWillOpen += HandleOnViewWillOpen;
    Tapjoy.OnViewWillClose += HandleOnViewWillClose;
    Tapjoy.OnViewDidOpen += HandleOnViewDidOpen;
    Tapjoy.OnViewDidClose += HandleOnViewDidClose;

    // Currency
    Tapjoy.OnGetCurrencyBalanceResponse += HandleOnGetCurrencyBalanceResponse;
    //Tapjoy.OnGetCurrencyBalanceResponseFailure += HandleOnGetCurrencyBalanceResponseFailure;
    //Tapjoy.OnSpendCurrencyResponse += HandleOnSpendCurrencyResponse;
    //Tapjoy.OnSpendCurrencyResponseFailure += HandleOnSpendCurrencyResponseFailure;
    //Tapjoy.OnAwardCurrencyResponse += HandleOnAwardCurrencyResponse;
    //Tapjoy.OnAwardCurrencyResponseFailure += HandleOnAwardCurrencyResponseFailure;
    Tapjoy.OnEarnedCurrency += HandleOnEarnedCurrency;
    Tapjoy.OnOffersResponse += HandleOnOffersResponse;
    Tapjoy.OnOffersResponseFailure += HandleOnOffersResponseFailure;

    // Placement
    TJPlacement.OnRequestSuccess += HandleOnPlacementRequestSuccess;
    TJPlacement.OnRequestFailure += HandleOnPlacementRequestFailure;
    TJPlacement.OnContentReady += HandleOnPlacementContentReady;
    TJPlacement.OnContentShow += HandleOnPlacementContentShow;
    TJPlacement.OnContentDismiss += HandleOnPlacementContentDismiss;
    TJPlacement.OnPurchaseRequest += HandleOnPurchaseRequest;
    TJPlacement.OnRewardRequest += HandleOnRewardRequest;

    Tapjoy.SetAppDataVersion ("20131901");
    
    Tapjoy.SetUserID ("234232");
    Tapjoy.SetUserLevel (1);
    Tapjoy.SetUserFriendCount (3);
    
    Tapjoy.SetUserCohortVariable (1, "DemoUser");
  }

  public static void Destroy() {
    TJPlacement.OnContentDismiss -= HandleOnPlacementContentDismiss;
    TJPlacement.OnContentReady -= HandleOnPlacementContentReady;
    TJPlacement.OnContentShow -= HandleOnPlacementContentShow;
    TJPlacement.OnRequestFailure -= HandleOnPlacementRequestFailure;
    TJPlacement.OnRequestSuccess -= HandleOnPlacementRequestSuccess;
    TJPlacement.OnPurchaseRequest -= HandleOnPurchaseRequest;
    TJPlacement.OnRewardRequest -= HandleOnRewardRequest;
  }
  
  public static void ShowPlacementAppLaunch() {
    if (placementAppLaunch == null) {
      placementAppLaunch = TJPlacement.CreatePlacement("APP_LAUNCH");
    }
    if (placementAppLaunch != null) {
      placementAppLaunch.SetPreload(true);
      placementAppLaunch.RequestContent();
    }
  }
  
  public static void Quit() {
    ShowMessage("placementAppClose == null ?" + 
                (placementAppClose == null) + " isReady:" + (placementAppClose.IsContentReady()));
    if (placementAppClose != null && placementAppClose.IsContentReady ()) {
      // Quit on dismissing placementAppClose
      placementAppClose.ShowContent ();
    } else {
      if (Application.platform == RuntimePlatform.IPhonePlayer) {
        // Do not use Application.Quit() for iOS
      }
      else {
        Destroy ();
        Application.Quit ();
      }
    }
  }

  static void HandleOnOffersResponseFailure (string error)
  {
    ShowMessage("HandleOnOffersResponseFailure:" + error);
  }

  static void HandleOnOffersResponse ()
  {
    
  }

  static void HandleOnGetCurrencyBalanceResponse (string currencyName, int amount)
  {
    ShowMessage("Currency Balance: " + currencyName + " " + amount);
  }

  static void HandleOnEarnedCurrency (string currencyName, int amount)
  {
    // NOTE: Should I update ruby of Shop ?
    /*
    int ruby = PlayerPrefs.GetInt ("Ruby", 0);
    ruby += amount;
    PlayerPrefs.SetInt("Ruby", ruby);
    Shop.ruby = ruby;
    */
    ShowMessage("Earned: " + currencyName + " " + amount);
  }

  static void HandleOnViewDidClose (int type)
  {
    ShowMessage ("HandleOnViewDidClose: " + type);
  }

  static void HandleOnViewWillClose (int type)
  {
    ShowMessage ("HandleOnViewWillClose: " + type);
  }

  static void HandleOnViewDidOpen (int type)
  {
    ShowMessage ("HandleOnViewDidOpen: " + type);
  }

  static void HandleOnViewWillOpen (int type)
  {
    ShowMessage ("HandleOnViewWillOpen: " + type);
  }

  static void HandleOnVideoComplete ()
  {
    ShowMessage ("HandleOnVideoComplete");
  }

  static void HandleOnVideoError (string error)
  {
    ShowMessage ("HandleOnVideoError");
  }

  static void HandleOnVideoStart ()
  {
    ShowMessage ("HandleOnVideoStart");
  }


  static void HandleOnConnectSuccess ()
  {
    ShowMessage ("TapjoyIntegration.HandleOnConnectSuccess");
    
    // CreatePlacement should be called after successful connect
    if (placementAppClose == null) {
      placementAppClose = TJPlacement.CreatePlacement ("APP_CLOSE");
      if (placementAppClose != null) {
        placementAppClose.SetPreload (true);
        placementAppClose.RequestContent ();
      }
    }
  }
  
  static void HandleOnConnectFailure ()
  {
    ShowMessage ("HandleOnConnectFailure"); 
  }
  
  static void HandleOnPlacementRequestSuccess (TJPlacement placement)
  {
    ShowMessage ("HandleOnPlacementRequestSuccess({0}), isAvailable={1}, isReady={2}", 
                 placement.GetName (), placement.IsContentAvailable(), placement.IsContentReady());
    
  }
  
  static void HandleOnPlacementRequestFailure (TJPlacement placement, string error)
  {
    ShowMessage ("HandleOnPlacementRequestFailure({0}, {1})", placement.GetName (), error);
  }
  
  static void HandleOnPlacementContentReady (TJPlacement placement)
  {
    ShowMessage ("HandleOnPlacementContentReady({0})", placement.GetName ());
    if (placementAppLaunch == placement) {
      Debug.Log ("loadedLevelName == " + Application.loadedLevelName);
      if (!Application.loadedLevelName.Equals("Game")) {
        placementAppLaunch.ShowContent();
      }
    }
  }
  
  static void HandleOnPlacementContentShow (TJPlacement placement)
  {
    ShowMessage ("HandleOnPlacementContentShow({0})", placement.GetName ());
    if (bgmObject) {
      if (bgmObject.audio.isPlaying) {
        bgmObject.audio.Pause();
      }
    }
  }
  
  static void HandleOnPlacementContentDismiss (TJPlacement placement)
  {
    ShowMessage ("HandleOnPlacementContentDismiss({0})", placement.GetName ());

    if (placement == placementAppClose) {
      if (Application.platform == RuntimePlatform.IPhonePlayer) {
        // Do not use Application.Quit() for iOS
      }
      else {
        Destroy ();
        Application.Quit ();
      }
    }
    else {
      if (bgmObject) {
        if (!bgmObject.audio.isPlaying) {
          bgmObject.audio.Play();
        }
      }
    }
  }
  
  static void HandleOnPurchaseRequest (TJPlacement placement, TJActionRequest actionRequest, string productId)
  {
    ShowMessage ("OnPurchaseRequest {0} {1} {2}", placement.GetName (), actionRequest.requestID, productId);
    Application.LoadLevel ("Shop");
    actionRequest.Completed ();
  }
  
  static void HandleOnRewardRequest (TJPlacement placement, TJActionRequest actionRequest, string itemId, int quantity)
  {
    ShowMessage ("OnRewardRequest {0} {1} {2} {3}", placement.GetName (), actionRequest.requestID, itemId, quantity);
    actionRequest.Completed ();
  }
  
  public static void ShowMessage (string format, params object[] args)
  {
    string message = string.Format (format, args);
    GUIToast.Add (message);
    Debug.Log (message);
  }

  public static void SetBGMObject(GameObject _bgmObject)
  {
    bgmObject = _bgmObject;
  }
}

http://dev.tapjoy.com/sdk-integration/unity/sample-application/