UGUI之Vertical Layout Group组件介绍

VerticalLayoutGroup也是HorizontalOrVerticalLayoutGroup的子类，HorizontalOrVerticalLayoutGroup是LayoutGroup的子类，下面从源码中进行对比

namespace UnityEngine.UI
{
[AddComponentMenu("Layout/Horizontal Layout Group", 150)]
public class HorizontalLayoutGroup : HorizontalOrVerticalLayoutGroup
{
protected HorizontalLayoutGroup()
{}

public override void CalculateLayoutInputHorizontal()
{
base.CalculateLayoutInputHorizontal();
CalcAlongAxis(0, false);
}

public override void CalculateLayoutInputVertical()
{
CalcAlongAxis(1, false);
}

public override void SetLayoutHorizontal()
{
SetChildrenAlongAxis(0, false);
}

public override void SetLayoutVertical()
{
SetChildrenAlongAxis(1, false);
}
}
}

namespace UnityEngine.UI
{
[AddComponentMenu("Layout/Vertical Layout Group", 151)]
public class VerticalLayoutGroup : HorizontalOrVerticalLayoutGroup
{
protected VerticalLayoutGroup()
{}

public override void CalculateLayoutInputHorizontal()
{
base.CalculateLayoutInputHorizontal();
CalcAlongAxis(0, true);
}

public override void CalculateLayoutInputVertical()
{
CalcAlongAxis(1, true);
}

public override void SetLayoutHorizontal()
{
SetChildrenAlongAxis(0, true);
}

public override void SetLayoutVertical()
{
SetChildrenAlongAxis(1, true);
}
}
}

可以看出，唯一的区别就是四个重写的基方法里的调用的CalcAlongAxis、SetChildrenAlongAxis一个是false，一个是true，那么显然true表示是vertical，false表示horizontal

所以在这就不过多的对Vertical Layout Group组件做过多的介绍，用法跟 Horizontal Layout Group组件一样的用，如果对Horizontal Layout Group组件有不了解的，详情请点击这里Horizontal Layout Group组件介绍

以上知识分享，如有错误，欢迎指出，共同学习，共同进步。