cocos2d-x Button的监听使用

virtual bool init();

void touchEvent(Ref *pSender, cocos2d::ui::Widget::TouchEventType type,int tt);

Size wsize = Director::getInstance()->getVisibleSize();

_displayValueLabel = cocos2d::ui::Text::create("No Event", "fonts/Marker Felt.ttf", 32);

_displayValueLabel->setAnchorPoint(Vec2(0.5f,-1.0f));

_displayValueLabel->setPosition(Vec2(wsize.width / 2.0f, wsize.height / 2.0f + 100));

this->addChild(_displayValueLabel);

Button* button = Button::create("animationbuttonnormal.png","animationbuttonpressed.png");

button->setPosition(Vec2(wsize.width / 2,wsize.height / 2));

button->addTouchEventListener(CC_CALLBACK_2(HelloWorld::touchEvent,this,int tt));

button->setZoomScale(0.4f);

button->setPressedActionEnabled(true);

this->addChild(button);

button->setOpacity(100);

//CC_CALLBACK_0的this不是参数，而是执行这个回调函数的具体对象

//这个0也不能理解成多少个参数，而是指的占位符，比如某个回调函数有5个参数，如add（int，int，int，int，int），

//然后用CC_CALLBACK_2占上前两个参数，给后面三个参数绑定，可以写成

//CC_CALLBACK_2(LogicTest::add, this,15,15,15);

void HelloWorld::touchEvent(Ref *pSender, cocos2d::ui::Widget::TouchEventType type,int tt)

{

log("---------------->%d", tt);//测试多个参数

switch (type)

{

case cocos2d::ui::Widget::TouchEventType::BEGAN:

_displayValueLabel->setString(String::createWithFormat("Touch Down")->getCString());

break;

case Widget::TouchEventType::MOVED:

_displayValueLabel->setString(String::createWithFormat("Touch Move")->getCString());

break;

case Widget::TouchEventType::ENDED:

break;

case Widget::TouchEventType::CANCELED:

_displayValueLabel->setString(String::createWithFormat("Touch Cancelled")->getCString());

break;

default:

break;

}

}