8、Cocos2d-X 游戏编程之------CCControlSlider的使用

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8、CCControlSlider的用法

boolHelloWorld::init()

{

if (!CCLayer::init() )

{

return false;

}

CCControlSlider*slider=CCControlSlider::create("sliderBg.png","sliderProgress.png","sliderThumb.png");

slider->setPosition(ccp(200,170));

//设置滑动条最大值

slider->setMaximumValue(100);

//设置滑动条最小值

slider->setMinimumValue(0);

addChild(slider,0,921);

//设置监听，当滑动条的值发生变化后，会响应valueChanged函数

//CCControlEventValueChanged值改变

slider->addTargetWithActionForControlEvent(this,cccontrol_selector(HelloWorld::valueChanged), CCControlEventValueChanged);

//用于展示当前滑动条的滑动值

CCLabelTTF * ttf =CCLabelTTF::create("", "Helvetica", 20);

ttf->setPosition(ccp(200,210));

ttf->setString(CCString::createWithFormat("滑动条当前值 = %.02f",slider->getValue())->getCString());

addChild(ttf,0,922);

return true;

}

voidHelloWorld::valueChanged()

{

CCControlSlider*slider=(CCControlSlider*)this->getChildByTag(921);

CCLabelTTF * ttf =(CCLabelTTF*)this->getChildByTag(922);

ttf->setString(CCString::createWithFormat("滑动条当前值 = %.02f",slider->getValue())->getCString());

}

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