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;
}

Either of Scroll Layer scrolling when you swipe your finger or try to scroll? — Renaissance, Apr 28 '14 at 07:57
I can't do anything(swipe or scroll) with SlideCharacter1, but with SlideCharacter2 i can scroll or swipe — nvg58, Apr 28 '14 at 09:05
Yes, it is possible that SlideCharacter1's touch delegate is not being called — Renaissance, Apr 28 '14 at 09:10
So, how can i fix it? Any suggestion? P/s: I think it *may be* SlideCharacter2 has overlap the SlideCharacter1, so i can't interact with SlideCharacter1. Is it correct? — nvg58, Apr 28 '14 at 09:14
check for swallowTouch bool in your touch dispatcher. It might be possible that swallowTouch value is set to FALSE. Can you please share CCScrollLayerVertical file? — Renaissance, Apr 28 '14 at 09:24
yes, of course.It's here [CCScrollLayerVertical.h](https://github.com/tranvictor/landlord/blob/horizontal-master/Classes/CCScrollLayerVertical.h) [CCScrollLayerVertical.cpp](https://github.com/tranvictor/landlord/blob/horizontal-master/Classes/CCScrollLayerVertical.cpp) — nvg58, Apr 28 '14 at 13:47
Yes, Swallow touch value is set to false so it will not propagate touch to other touch delegate methods. So Enable swallowTouch in registerWithTouchDispatcher method. — Renaissance, Apr 29 '14 at 05:06
So, I change the swallowTouch to true as below `void CCScrollLayerVertical::registerWithTouchDispatcher() { CCDirector::sharedDirector()->getTouchDispatcher()->addTargetedDelegate(this, kCCMenuHandlerPriority - 1, true); } ` Then i cant touch anything in the screen. What happened? — nvg58, Apr 29 '14 at 06:01

score 0 · Answer 1 · answered Apr 29 '14 at 06:43

0

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

answered Apr 29 '14 at 06:43

stnguyenvn

21
2

Can you be more specific? I found that CCScrollLayer touch's method are all protected. Can you give an example? – nvg58 Apr 29 '14 at 08:15

Can not scroll when add 2 CCScrollLayer in a layer

1 Answers1