相对布局在 cocos2d-x 3.1 上不起作用？

Question

这里有一个相对布局的示例，放置了 9 个按钮： http://www.cocos2d-x.org/wiki/Containers

我用 cocos2d-x 3.1 做了一些与 wiki 示例非常相似的事情，并在 Android 和 Windows 上进行了测试。我已经细分了 Layer 并在以下代码中添加了 init() 方法：

Layout* layout = Layout::create();
layout->setLayoutType(LayoutType::RELATIVE);
layout->setContentSize(visibleSize);
layout->setBackGroundColorType(Layout::BackGroundColorType::SOLID);
layout->setBackGroundColor(Color3B::GREEN);
// Size backgroundSize = background->getContentSize();
layout->setPosition(Vec2(visibleOrigin.x + visibleSize.width / 2, visibleOrigin.y + visibleSize.height / 2));
/*_uiLayer->*/addChild(layout);

// top left
Button* button_TopLeft = Button::create("images/ingame/bubbe.png");
layout->addChild(button_TopLeft);

RelativeLayoutParameter* rp_TopLeft = RelativeLayoutParameter::create();
rp_TopLeft->setAlign(RelativeLayoutParameter::RelativeAlign::PARENT_TOP_LEFT);
button_TopLeft->setLayoutParameter(rp_TopLeft);


// top center horizontal
Button* button_TopCenter = Button::create("images/ingame/bubbe.png");
layout->addChild(button_TopCenter);

RelativeLayoutParameter* rp_TopCenter = RelativeLayoutParameter::create();
rp_TopCenter->setAlign(RelativeLayoutParameter::RelativeAlign::PARENT_TOP_CENTER_HORIZONTAL);
button_TopCenter->setLayoutParameter(rp_TopCenter);


// top right
Button* button_TopRight = Button::create("images/ingame/bubbe.png");
layout->addChild(button_TopRight);

RelativeLayoutParameter* rp_TopRight = RelativeLayoutParameter::create();
rp_TopRight->setAlign(RelativeLayoutParameter::RelativeAlign::PARENT_TOP_RIGHT);
button_TopRight->setLayoutParameter(rp_TopRight);


// left center
Button* button_LeftCenter = Button::create("images/ingame/bubbe.png");
layout->addChild(button_LeftCenter);

RelativeLayoutParameter* rp_LeftCenter = RelativeLayoutParameter::create();
rp_LeftCenter->setAlign(RelativeLayoutParameter::RelativeAlign::PARENT_LEFT_CENTER_VERTICAL);
button_LeftCenter->setLayoutParameter(rp_LeftCenter);


// center
Button* buttonCenter = Button::create("images/ingame/bubbe.png");
layout->addChild(buttonCenter);

RelativeLayoutParameter* rpCenter = RelativeLayoutParameter::create();
rpCenter->setAlign(RelativeLayoutParameter::RelativeAlign::CENTER_IN_PARENT);
buttonCenter->setLayoutParameter(rpCenter);


// right center
Button* button_RightCenter = Button::create("images/ingame/bubbe.png");
layout->addChild(button_RightCenter);

RelativeLayoutParameter* rp_RightCenter = RelativeLayoutParameter::create();
rp_RightCenter->setAlign(RelativeLayoutParameter::RelativeAlign::PARENT_RIGHT_CENTER_VERTICAL);
button_RightCenter->setLayoutParameter(rp_RightCenter);


// left bottom
Button* button_LeftBottom = Button::create("images/ingame/bubbe.png");
layout->addChild(button_LeftBottom);

RelativeLayoutParameter* rp_LeftBottom = RelativeLayoutParameter::create();
rp_LeftBottom->setAlign(RelativeLayoutParameter::RelativeAlign::PARENT_LEFT_BOTTOM);
button_LeftBottom->setLayoutParameter(rp_LeftBottom);


// bottom center
Button* button_BottomCenter = Button::create("images/ingame/bubbe.png");
layout->addChild(button_BottomCenter);

RelativeLayoutParameter* rp_BottomCenter = RelativeLayoutParameter::create();
rp_BottomCenter->setAlign(RelativeLayoutParameter::RelativeAlign::PARENT_BOTTOM_CENTER_HORIZONTAL);
button_BottomCenter->setLayoutParameter(rp_BottomCenter);


// right bottom
Button* button_RightBottom = Button::create("images/ingame/bubbe.png");
layout->addChild(button_RightBottom);

RelativeLayoutParameter* rp_RightBottom = RelativeLayoutParameter::create();
rp_RightBottom->setAlign(RelativeLayoutParameter::RelativeAlign::PARENT_RIGHT_BOTTOM);
button_RightBottom->setLayoutParameter(rp_RightBottom); 

附件是这段代码的结果。您可以看到 9 个红色气泡按钮。这个按钮位于我的屏幕中央，但我预计它们会出现在右上角、右上角、......以及我屏幕上的所有其他 9 个位置。他们为什么离得这么近？

我也没有看到纯绿色的布局。怎么了？

Answer 1

需要改变 layout->setContentSize(visibleSize); 到 layout->setSize(visibleSize);.

另外，要调试带有颜色的布局，请执行以下操作：

layout->setBackGroundColor(Color3B::GREEN);
layout->setBackGroundColorType(Layout::BackGroundColorType::SOLID);