AdMob Interstitial Cocos2d-x WP8

问题

Can enyone tell me how to call AdMob Interstitial between scenes in my cocos2d-x game?

I have tried this http://robwirving.com/2014/07/21/calling-c-methods-c-winrt-components/ guide, but i don't know how to run it from cocos classes.

Is there any another ways, or some guides?

回答1:

I've recently made it. You have to do few things. First of all create helper class, which will help you calling native function (I use this for all 3 platforms, but here's just windows phone):

NativeHelper.h:

#ifndef  __NATIVE_HELPER_H_
#define  __NATIVE_HELPER_H_

#include <string>
#include <functional>
#include "cocos2d.h"

using namespace std;
USING_NS_CC;

#if (CC_TARGET_PLATFORM == CC_PLATFORM_WP8)
namespace cocos2d

{

    public delegate void CSharpShowInterstitialDelegate();

    public ref class WP8NativeEventHelper sealed

    {

    public:

        void WP8NativeEventHelper::SetCSharpShowInterstitialDelegate(CSharpShowInterstitialDelegate^ delegate){

            m_CSharpShowInterstitialDelegate = delegate;

        }

        void CallShowInterstitial();

    private:

        property static CSharpShowInterstitialDelegate^ m_CSharpShowInterstitialDelegate;

    };



}
#endif

class NativeHelper
{
public:
    static void showInterstitial(string adSdk);

#if (CC_TARGET_PLATFORM == CC_PLATFORM_WP8)
    WP8NativeEventHelper^ wp8helper;
#endif

    //instance required only for setting callback
    static NativeHelper* getInstance();

    ~NativeHelper()
    {
        instanceFlag = false;
    }

private:

    static bool instanceFlag;
    static NativeHelper* instance;

    NativeHelper() {};

};

#endif // __NATIVE_HELPER_H_

So. We have special C++/CX class Wp8NativeEventHelper, which can "talk" with C#. Here we store a delegate.

How it works:

C# is calling SetCSharpShowInterstitialDelegate and passes a delegate to it, which will be remembered in static property.
Then C++\CX can call it using CallShowInterstitial.

Now NativeHelperWP.cpp:

#if (CC_TARGET_PLATFORM == CC_PLATFORM_WP8)

#ifndef  __NATIVE_HELPER_WP_H_
#define  __NATIVE_HELPER_WP_H_

#include "NativeHelper.h"

void WP8NativeEventHelper::CallShowInterstitial(){

    if (m_CSharpShowInterstitialDelegate)

    {

        m_CSharpShowInterstitialDelegate->Invoke();

    }

}

bool NativeHelper::instanceFlag = false;
NativeHelper* NativeHelper::instance = NULL;

NativeHelper* NativeHelper::getInstance()
{
    if(!instanceFlag){
        instance = new NativeHelper();
        instanceFlag = true;
        instance->wp8helper = ref new WP8NativeEventHelper();
    }

    return instance;
}

void NativeHelper::showInterstitial(){
    NativeHelper::getInstance()->wp8helper->CallShowInterstitial();
}

#endif

#endif

Here is just an implementation of CallShowInterstitial. Also in NativeHelper::showInterstitial we're calling C++/CX, which later calls c#.

Now c# code (MainPage.xaml.cs):

outside namespace:

using GoogleAds;

inside class:

  private InterstitialAd interstitialAd;

in constructor:

WP8NativeEventHelper helper = new WP8NativeEventHelper();
helper.SetCSharpShowInterstitialDelegate(showInterstitial);

and also create showInterstitial function:

public void showInterstitial() //we recreate interstitial each time, because otherwise it'll show only once, only new requests won't work
{
  interstitialAd = new InterstitialAd("MY_AD_UNIT_ID");
  AdRequest adRequest = new AdRequest();

  #if DEBUG
  // Enable test ads.
  adRequest.ForceTesting = true;
  #endif


  interstitialAd.ReceivedAd += OnAdReceived;
  interstitialAd.LoadAd(adRequest);
}

and finally OnAdReceived:

private void OnAdReceived(object sender, AdEventArgs e)
{
  System.Diagnostics.Debug.WriteLine("Ad received successfully");
  interstitialAd.ShowAd();
}

Follow this guide to setup admob: https://developers.google.com/mobile-ads-sdk/docs/admob/wp/quick-start

Now let's use this.

In HelloWorldScene.h add: