cocos2dx中精灵点击事件处理的两种方式——Sprite和ImageView

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1. ImageView 的方式：封装的Widget组件ImageVIew实现了类似按钮的监听事件，所以处理起来很方便直接

ImageView*_pPokerImageView;_pPokerImageView = ImageView::create(tmpStr);_pPokerImageView->setAnchorPoint(Vec2(0, 0));_pPokerImageView->setTouchEnabled(true);addChild(_pPokerImageView);_pPokerImageView->addTouchEventListener([this](Ref* pSender,Widget::TouchEventType type){if (type == Widget::TouchEventType::ENDED){PokerEventStatus tmpStatus = (getStatusValue() == SelectedStatus) ? NormalStatus : SelectedStatus;updateSelectedSigned(tmpStatus);if (getStatusValue() == SelectedStatus){updateSelectedSigned(SelectedStatus);}else{updateSelectedSigned(NormalStatus);}}

2.Sprite的方式：需要手动实现监听事件代码，而且需要根据坐标，size去做精灵点击区域判断，写起来稍微复杂点，不过条条道路通罗马，多点方式，多种选择

</pre><pre name="code" class="cpp">EventListenerTouchOneByOne* _spriteListener;Sprite*_pPokerSprite;

/* 添加事件监听 */_spriteListener = EventListenerTouchOneByOne::create();_spriteListener->onTouchBegan = [this](Touch* touch, Event* event) -> bool {/* 获取事件所绑定的 target */auto target = event->getCurrentTarget();/* 获取当前点击点所在相对按钮的位置坐标 */Vec2 locationInNode = target->convertToNodeSpace(touch->getLocation());Size targetSize = target->getContentSize();Rect rect = Rect(_pPokerSprite->getPositionX(), _pPokerSprite->getPositionY(), COCOSNODE_WIDTH(_pPokerSprite), COCOSNODE_HEIGHT(_pPokerSprite));bool isClicked = rect.containsPoint(locationInNode);/* 点击范围判断 */if (isClicked){PokerEventStatus tmpStatus = (getStatusValue() == SelectedStatus) ? NormalStatus : SelectedStatus;updateSelectedSigned(tmpStatus);if (getStatusValue() == SelectedStatus){updateSelectedSigned(SelectedStatus);}else{updateSelectedSigned(NormalStatus);}}/* 此处一定要动态设置事件吞噬，否则层只会响应最后一张加入精灵的事件 */_spriteListener->setSwallowTouches(isClicked);return isClicked;};

在init时同时初始化精灵，加入层

_pPokerSprite = Sprite::createWithTexture(pChessTexture, tmpRect);_pPokerSprite->setAnchorPoint(Vec2(0, 0));addChild(_pPokerSprite);

然后在onEnter里加入监听：

void TBBullFightPoker::onEnter(void){Node::onEnter();do {CC_BREAK_IF(!_pPokerSprite);_eventDispatcher->addEventListenerWithSceneGraphPriority(_spriteListener, _pPokerSprite);} while (0);}

同样在onExit里删除监听：

void TBBullFightPoker::onExit(void){_eventDispatcher->removeEventListener(_spriteListener);Node::onExit();}

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