我想给一个button控件绑定一个触摸监听，结果整个屏幕都能触发回调函数。应该怎么绑定才能只有点击按钮时才能用。看官方文档里，它对比了点击处的坐标和按钮的坐标能解决，有其他方便的方法吗？
下面附上代码：
auto UI = CSLoader::createNode("MainScene.csb");
this->addChild(UI);
auto outputBtn = dynamic_cast<cocos2d::ui::Button*>(UI->getChildByName("Button_1"));
this->addChild(outputBtn);
CCLOG("the scene is created succesful!!");
auto listener = EventListenerTouchOneByOne::create();
listener->setEnabled(true);
listener->setSwallowTouches(true);
listener->onTouchBegan = [](Touch* touch, Event* event) {
return true;
};
listener->onTouchEnded = [&](Touch* touch,Event* event){
auto self = new TowerPosEditorLayer();
self->outputPosOnClick();
CCLOG("the callback function is worked successful!!");
};
_eventDispatcher->addEventListenerWithSceneGraphPriority(listener,outputBtn);