#import "RootViewController.h"
#import "cocos2d.h"
#import "platform/ios/CCEAGLView-ios.h"static NSString *INTERSTITIAL_STATE_TEXT = @"插屏状态";@implementation RootViewController/***  广告预加载成功回调*  详解:当接收服务器返回的广告数据成功后调用该函数*/
- (void)interstitialSuccessToLoadAd:(GDTMobInterstitial *)interstitial
{NSLog(@"%@:%@",INTERSTITIAL_STATE_TEXT,@"Success Loaded.");
}/***  广告预加载失败回调*  详解:当接收服务器返回的广告数据失败后调用该函数*/
- (void)interstitialFailToLoadAd:(GDTMobInterstitial *)interstitial error:(NSError *)error
{NSLog(@"%@:%@",INTERSTITIAL_STATE_TEXT,@"Fail Loaded." );
}/*// The designated initializer.  Override if you create the controller programmatically and want to perform customization that is not appropriate for viewDidLoad.
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {if ((self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil])) {// Custom initialization}return self;
}
*//*
// Implement loadView to create a view hierarchy programmatically, without using a nib.
- (void)loadView {
}
*//*
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {[super viewDidLoad];
}*/
// Override to allow orientations other than the default portrait orientation.
// This method is deprecated on ios6
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {return UIInterfaceOrientationIsLandscape( interfaceOrientation );
}// For ios6, use supportedInterfaceOrientations & shouldAutorotate instead
- (NSUInteger) supportedInterfaceOrientations{
#ifdef __IPHONE_6_0return UIInterfaceOrientationMaskAllButUpsideDown;
#endif
}- (BOOL) shouldAutorotate {return YES;
}- (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation {[super didRotateFromInterfaceOrientation:fromInterfaceOrientation];auto glview = cocos2d::Director::getInstance()->getOpenGLView();if (glview){CCEAGLView *eaglview = (CCEAGLView*) glview->getEAGLView();if (eaglview){CGSize s = CGSizeMake([eaglview getWidth], [eaglview getHeight]);cocos2d::Application::getInstance()->applicationScreenSizeChanged((int) s.width, (int) s.height);}}
}//fix not hide status on ios7
- (BOOL)prefersStatusBarHidden
{return YES;
}- (void)didReceiveMemoryWarning {// Releases the view if it doesn't have a superview.[super didReceiveMemoryWarning];// Release any cached data, images, etc that aren't in use.
}- (void)viewDidUnload {[super viewDidUnload];// Release any retained subviews of the main view.// e.g. self.myOutlet = nil;
}- (void)dealloc {[super dealloc];
}@end

6）新建一个C++类，命名为AdInterC，用来加载和显示广告。注意我们要在Cocos2d-x的场景里生成广告，而Cocos2d-x场景又都是C++代码实现的（主要是因为Cocos2d-x都是以.cpp文件存在，它不支持对Objective C指令的编译），所以必须新建C++类，而非Objective C类。完整代码如下：

#ifndef AdInterC_hpp
#define AdInterC_hpp//要被cpp包含，所以不能有任何Objective C指令, 也就是说这里即不能#import GDTMobBannerView.h，
//也不能用@class GDTMobBannerView. 只能通过一个结构体来间接的调用GDTMobBannerView
struct AdInterImpl;class AdInterC
{
public:AdInterC();~AdInterC();void loadAd();//加载广告void showAd();//显示广告private:AdInterImpl* impl;
};
#endif /* AdInterC_hpp */

#include "AdInterC.h"#include "RootViewController.h"struct AdInterImpl
{GDTMobInterstitial * _interObj;
};AdInterC::AdInterC()
{impl = new AdInterImpl();
}
AdInterC::~AdInterC()
{impl->_interObj.delegate=nil;delete impl;
}void AdInterC::loadAd()
{impl->_interObj = [[GDTMobInterstitial alloc] initWithAppkey:@"2211675583" placementId:@"2954362461573316031"];//注意测试的时候就要改成自己申请来的ID，否则很难加载成功auto rootViewController = (RootViewController*) [[[UIApplication sharedApplication] keyWindow] rootViewController];impl->_interObj.delegate = rootViewController; //设置委托impl->_interObj.isGpsOn = NO; //【可选】设置GPS开关 //预加载广告[impl->_interObj loadAd];
}void AdInterC::showAd()
{UIViewController *vc = [[[UIApplication sharedApplication] keyWindow]rootViewController];[impl->_interObj presentFromRootViewController:vc];
}

注意要把app key和placement id改成自己申请来的，否则很难加载成功。另外要把加载方法和显示方法分开。

#ifndef __HELLOWORLD_SCENE_H__
#define __HELLOWORLD_SCENE_H__#include "cocos2d.h"
#include "AdInterC.h"class HelloWorld : public cocos2d::Layer
{
public:static cocos2d::Scene* createScene();virtual bool init();//加载回调void loadCallback(cocos2d::Ref* pSender);//显示回调void showCallback(cocos2d::Ref* pSender);// implement the "static create()" method manuallyCREATE_FUNC(HelloWorld);AdInterC *ad;
};#endif // __HELLOWORLD_SCENE_H__

#include "HelloWorldScene.h"USING_NS_CC;Scene* HelloWorld::createScene()
{// 'scene' is an autorelease objectauto scene = Scene::create();// 'layer' is an autorelease objectauto layer = HelloWorld::create();// add layer as a child to scenescene->addChild(layer);// return the scenereturn scene;
}// on "init" you need to initialize your instance
bool HelloWorld::init()
{//// 1. super init firstif ( !Layer::init() ){return false;}//创建一个广告类对象ad=new AdInterC();Size visibleSize = Director::getInstance()->getVisibleSize();Vec2 origin = Director::getInstance()->getVisibleOrigin();/// 2. add a menu item with "X" image, which is clicked to quit the program//    you may modify it.//加载菜单项auto loadItem = MenuItemImage::create("CloseNormal.png","CloseSelected.png",CC_CALLBACK_1(HelloWorld::loadCallback, this));//显示菜单项auto showItem = MenuItemImage::create("CloseNormal.png","CloseSelected.png",CC_CALLBACK_1(HelloWorld::showCallback, this));loadItem->setPosition(Vec2(origin.x +  loadItem->getContentSize().width/2 ,origin.y + loadItem->getContentSize().height/2));showItem->setPosition(Vec2(origin.x + visibleSize.width - showItem->getContentSize().width/2 ,origin.y + showItem->getContentSize().height/2));// create menu, it's an autorelease objectauto menu = Menu::create(loadItem, showItem, NULL);menu->setPosition(Vec2::ZERO);this->addChild(menu, 1);/// 3. add your codes below...// add a label shows "Hello World"// create and initialize a labelauto label = Label::createWithTTF("Hello World", "fonts/Marker Felt.ttf", 24);// position the label on the center of the screenlabel->setPosition(Vec2(origin.x + visibleSize.width/2,origin.y + visibleSize.height - label->getContentSize().height));// add the label as a child to this layerthis->addChild(label, 1);// add "HelloWorld" splash screen"auto sprite = Sprite::create("HelloWorld.png");// position the sprite on the center of the screensprite->setPosition(Vec2(visibleSize.width/2 + origin.x, visibleSize.height/2 + origin.y));// add the sprite as a child to this layerthis->addChild(sprite, 0);return true;
}void HelloWorld::loadCallback(Ref* pSender)
{ad->loadAd();
}void HelloWorld::showCallback(Ref* pSender)
{ad->showAd();
}

水平有限，如有不妥，欢迎指正！

参考资料：

1）广点通官方文档Guide 4.0.pdf

2)  广大网友