cocos2d-x 开关按钮 三态按钮 的实现 CCMenuItemToggle

一.废话少说,先上效果图:

     

二.实现过程:

1.创建CCMenuItemToggle对象:

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CCMenuItemImage *btnOn =CCMenuItemImage::create("soundon.png" ,"soundoff.png");

 

CCMenuItemImage *btnOff=CCMenuItemImage::create("soundoff.png","soundon.png");

 

CCMenuItemToggle *btnSnd =CCMenuItemToggle::createWithTarget(this,menu_selector(GameLayer::onMusicEnable),btnOn, btnOff,NULL);

2.添加到CCMenu中:

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CCMenu*pMenu=CCMenu::create(btnSnd,NULL);

    pMenu->setPosition(CCPointZero);

    this->addChild(pMenu);

3.响应代码:

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void GameLayer::onMusicEnable( cocos2d::CCObject* pObj )

{

    CCMenuItemToggle *toggleItem = (CCMenuItemToggle *)pObj;

    CCLog("%d",toggleItem->getSelectedIndex());

}

三.其他

1.调用CCMenuItemToggle::createWithTarget (…)状态:

获得:

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intnID=toggleItem->getSelectedIndex();

swith(nID)

{

case0:

    //...

    break;

case1:

    //...

    break;

}

设置:

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toggleItem->setSelectedIndex(1);

toggleItem->setSelectedIndex(2);

2.三态按钮也可以采用类似的方法实现,CCMenuItemToggle::createWithTarget()一次传入3种状态,点击后会自动1-2-3-1这样切换 .