cocos2dx中调用Andriod中的返回键和菜单监听

  最近写了个cocos2dx的小游戏，想移植到Andriod上，却突然忘了怎么调用返回键监听，写下来方便以后查看，，也让不知道用法的朋友参考一下

  我的是cocos2dx 3.0，，用2.x的朋友不知道能不能用，可以试试看

.h文件

void onKeyReleased(EventKeyboard::KeyCode keycode, Event* event);

.cpp文件

//注册捕捉监听  
auto listenerkeyPad = EventListenerKeyboard::create();  
listenerkeyPad->onKeyReleased = CC_CALLBACK_2(WelcomeScene::onKeyReleased, this);  
_eventDispatcher->addEventListenerWithSceneGraphPriority(listenerkeyPad, this);  

void WelcomeScene::onKeyReleased(EventKeyboard::KeyCode keycode, Event* event)
{
    switch (keycode)
    {
    case EventKeyboard::KeyCode::KEY_BACKSPACE:   //返回键监听
        break;
    case EventKeyboard::KeyCode::KEY_MENU:      //菜单监听
        break;
    case::EventKeyboard::KeyCode::KEY_HOME:  //home键监听
        break;
    default:
        break;
    }
}