Cocos2d-3.x_Android物理按键回调

#ifndef __HELLOWORLD_SCENE_H__
#define __HELLOWORLD_SCENE_H__

#include "cocos2d.h"

USING_NS_CC;


class HelloWorld : public cocos2d::Layer
{
public:
    static cocos2d::Scene* createScene();

    virtual bool init();

    CREATE_FUNC(HelloWorld);

private:
	LabelTTF *pLabel;
};

#endif // __HELLOWORLD_SCENE_H__

#include "HelloWorldScene.h"

Scene* HelloWorld::createScene()
{
    auto scene = Scene::create();
    auto layer = HelloWorld::create();
    scene->addChild(layer);

    return scene;
}

bool HelloWorld::init()
{
    if ( !Layer::init() )
    {
        return false;
    }
    
    Size visibleSize = Director::getInstance()->getVisibleSize();
    Vec2 origin = Director::getInstance()->getVisibleOrigin();

	pLabel = LabelTTF::create("HelloWorld","fonts/Arial.ttf",30);
	pLabel->setPosition(visibleSize.width / 2.0,visibleSize.height / 2.0);
	this->addChild(pLabel);

	// 回调Android的物理按键事件
	auto listener = EventListenerKeyboard::create();
	listener->onKeypressed = [](EventKeyboard::KeyCode keyCode,Event *e)
	{
		log("keyCode:%d",keyCode);
		switch (keyCode)
		{
		case EventKeyboard::KeyCode::KEY_BACKSPACE:
		{
			log("back is pressed");
			Director::getInstance()->end();
		}
			break;
		case EventKeyboard::KeyCode::KEY_MENU:
		{
			log("menu is pressed");
		}
			break;
		}
	};

	Director::getInstance()->getEventdispatcher()->addEventListenerWithSceneGraPHPriority(listener,this);

    return true;
}