Can not scroll when add 2 CCScrollLayer in a layer

Question

I'm using CCScrollLayer files at here CCScrollLayer for my cocos2d-x project (version 2.2.2).

I adapted them to make it can scroll vertically. And I got a problem: when I add two CCScrollLayer in a layer, I just can only scroll the last CCScrollLayer that are added.

Here is my code:

I add a layer that contains the two CCScrollLayer to a Scene

void ChooseMapScene::addSlidingLayers()
{
  mChooseCharacterLayer = createChooseCharaterLayer();
  mChooseCharacterLayer->setPosition(CCPointZero);
  mChooseCharacterLayer->setTouchEnabled(true);      
  this->addChild(mChooseCharacterLayer, GR_FOREGROUND);
}

I add SlideCharacter1 and SlideCharacter2 in a layer (chooseCharacterLayer) but just the SlideCharacter2 can scroll

CCLayer* ChooseMapScene::createChooseCharaterLayer()
{
  CCLayer* chooseCharacterLayer = CCLayer::create();
  CCArray* characterArr1 = createCharactersArray(CHARACTER_LEFT_LAYER_POS);
  CCArray* characterArr2 = createCharactersArray(CHARACTER_RIGHT_LAYER_POS);

  mSlideCharacter1 = CCScrollLayerVertical::nodeWithLayers(characterArr1, 0);
  chooseCharacterLayer->addChild(mSlideCharacter1, GR_FOREGROUND);

  mSlideCharacter2 = CCScrollLayerVertical::nodeWithLayers(characterArr2, 0);
  chooseCharacterLayer->addChild(mSlideCharacter2, GR_FOREGROUND);

  // I add SlideCharacter1 and SlideCharacter2 in a layer (chooseCharacterLayer) but just the SlideCharacter2 can scroll

  return chooseCharacterLayer;
}

.

CCArray* ChooseMapScene::createCharactersArray(CCPoint pPos)
{
  CCArray* characterArr = CCArray::createWithCapacity(NUMBER_CHARACTERS);
  for (int i = 1; i <= NUMBER_CHARACTERS; ++i)
  {
    CCLayer* characterLayer = CCLayer::create();

    CCSprite* character = CCSprite::create(CCString::createWithFormat("Images/Game/Object/c%i.png", i)->getCString());
    character->setPosition(pPos);
    characterLayer->addChild(character, GR_FOREGROUND, i);
    characterArr->addObject(characterLayer);
  }
  return characterArr;
}

Answer 1

You can manually call SlideCharacter1's touch methods (began, cancelled, moved, ended) from SlideCharacter2's touch methods to simulate the touches