各位大神,我参照公开课第26集中写了触摸事件的代码,但是出现了下面错误:

错误出现在CCobject.cpp中的CCAssert(m_uReference > 0, “reference count should greater than 0”);

主程序MyScene.cpp中的CCDirector::sharedDirector()->getTouchDispatcher()->addTargetedDelegate(this,0,true);

MyScene.cpp中设置触摸事件的代码如下
void MyScene::onEnter(){
CCLayer::onEnter();
//注册触摸事件
CCDirector::sharedDirector()->getTouchDispatcher()->addTargetedDelegate(this,0,true);
//参数3是否继续低优先级操作
}
void MyScene::onExit(){
CCLayer::onExit();
CCDirector::sharedDirector()->getTouchDispatcher()->removeDelegate(this);
}
bool MyScene::ccTouchBegan(CCTouch *pTouch, CCEvent *event){
CCLOG("touchbegan");
return true;//true表示还响应后面的其他响应函数,false不响应后面的操作
}
void MyScene::ccTouchMoved(CCTouch *pTouch, CCEvent *event){
CCLOG("touchmoved");
}
void MyScene::ccTouchEnded(CCTouch *pTouch, CCEvent *event){
CCLOG("touchended");
}
void MyScene::ccTouchCancelled(CCTouch *pTouch, CCEvent *event){
CCLOG("touchended");
}
MyScene.h中声明函数如下:
virtual void onEnter();
virtual void onExit();
virtual bool ccTouchBegan(CCTouch *pTouch, CCEvent *event);//第一次碰到屏幕时响应
virtual void ccTouchMoved(CCTouch *pTouch, CCEvent *event);//滑动操作
virtual void ccTouchEnded(CCTouch *pTouch, CCEvent *event);//离开屏幕
virtual void ccTouchCancelled(CCTouch *pTouch, CCEvent *event);//取消操作
