如何在不旋转的情况下改变 Unity 中 VerticalLayoutGroup 的扩展方向？

Question

I need to change the expanding direction of the VerticalLayoutGroup. With the default behavior the group will expand downstairs. What i want is, that the group will expand upstairs.

The expected behavior is described in this Video . (Link to the answer on stackoverflow https://stackoverflow.com/a/43192904/11236801 )

The solution on the link is, to rotate the LayoutGroup about 180°. Now this seems more like a workaround, because all childs have to be rotated as well. The solution suggested by this one will not give the expected behavior shown in the video.

I added the ContentSizeFitter to the LayoutGroup like described in this link in the Unity Answers . Now the LayoutGroup will expand in both directions (upstairs and downstairs).

Is there any solution to accomplish the desired behavior without rotating the LayoutGroup?

Edit: I also noticed a downside from the rotating approach: The Billboard Script from the MixedRealityToolkit will force the LayoutGroup to rotate back to 0°.

Answer 1

This works for me:

Note the Child Alignment setting on the Vertical Layout Group , and the Pivot settings on the Rect Transform . This makes the layout group expand upwards when more items are added.
Also note the presence of a Content Size Fitter component, and its Vertical Fit set to Preferred Size , that will adjust the height of the layout group when content is added or removed.