Ugui force refresh of layout components

I received a demand for planning not long ago , Make an auto fit display ： Unfixed text + Unfixed button + Unfixed text , Be similar to ：

HorizontalLayoutGroup Layout

For this need , The first thing that comes to mind is to add... To the parent object HorizontalLayoutGroup Components automatically manage the layout of sub objects , Add... To the sub object ContentSizeFitter The component adapts the size of the text through the content ！

But the code is written , There will be overlap between the text , It is observed that as long as the parent object or one of the child objects is changed enable, The overlapping text will be displayed normally . Try to hide sub objects before loading prefabs , When the loading is completed, it will be displayed , I still have to get the desired result . Finally, I found the solution on the Internet , Use LayoutRebuilder.ForceRebuildLayoutImmediate(RT) Methods , This method is called after the loading is completed , Problem solved .

Parameters RT It's with LayoutGroup Component's RectTransform.

The following is the source code he posted ：

Today, I encountered a similar problem , And sub objects will also nest content adaptive components . Empathy , Sub objects also need to have LayoutGroup Component's RectTransform Forced reconstruction .

summary ：

After solving this problem , By the way LayoutRebuilder.ForceRebuildLayoutImmediate Other articles , Use ContentSizeFitter Adaptive content to set RectTransform Will take effect one frame later , If the settings don't work , You can call... At the end of the code LayoutRebuilder.ForceRebuildLayoutImmediate To redraw Layout.

Reference resources ：

Husson MoMo：Unity3D Research Institute of ContentSizeFitter Synchronous immediate response callback   

Tencent netizen ：Unity in [VerticalLayoutGroup] And [HorizontalLayoutGroup] The dynamic refresh display is abnormal