[FIXED] How to get correct position of a gameobject thatis inside a vertical Layout group in unity?

Issue

I have a vertical layout group containing 3 game object

when I try to get the correct position of the child Objects from the vertical Layout group, it does not giving the correct output.

I tried

myPosition = this.gameObject.transform.localPosition;
myPosition = this.gameObject.transform.position;
myPosition = this.GetComponent<RectTransform>().position;
myPosition = this.GetComponent<RectTransform>().anchoredPosition;

Non gave the correct output. How to get this

Solution

You just need to fetch the position in Update or LateUpdate method, don't do that in Awake or Start.

void Update()
{
    if(transform.hasChanged)
        myPosition = ((RectTransform)transform).anchoredPosition;
}

https://docs.unity3d.com/Packages/com.unity.ugui@1.0/manual/UIAutoLayout.html

The rebuild will not happen immediately, but at the end of the current frame, just before rendering happens.

---

According to the documentation above, you cannot freely trigger layout rebuild, so this way is just based on the order of layout calculations: Call these 4 methods before fetching the position.

// VerticalLayoutGroup vlg;
vlg.CalculateLayoutInputHorizontal();
vlg.SetLayoutHorizontal();
vlg.CalculateLayoutInputVertical();
vlg.SetLayoutVertical();
myPosition = ((RectTransform)transform).anchoredPosition;

Answered By - shingo

Answer Checked By - Mary Flores (PHPFixing Volunteer)