Unity adapts Text size according to text

Unity adapts Text size according to text

1. Single Text component

using UnityEngine;
using UnityEngine.UI;

public class AutoTextSize : MonoBehaviour
{
    //固定Width 改变Height
    public void AutoChangeHeight(Text text)
    {
        RectTransform rect = text.GetComponent<RectTransform>();
        Vector2 v2 = rect.rect.size;

        rect.SetSizeWithCurrentAnchors(RectTransform.Axis.Horizontal, v2.x);
        rect.SetSizeWithCurrentAnchors(RectTransform.Axis.Vertical, text.preferredHeight);
    }

    //固定Height 改变Width
    public void AutoChangeWidth(Text text)
    {
        RectTransform rect = text.GetComponent<RectTransform>();
        Vector2 v2 = rect.rect.size;

        rect.SetSizeWithCurrentAnchors(RectTransform.Axis.Vertical, v2.y);
        rect.SetSizeWithCurrentAnchors(RectTransform.Axis.Horizontal, text.preferredWidth);
    }
}

2. Use sliding Text in Scroll View

It is necessary to set the Text under Content as a global change

using UnityEngine;
using UnityEngine.UI;

public class AutoTextSize : MonoBehaviour
{
    //Scroll View Content
    [SerializeField]
    private RectTransform rect_Content;
    
    //固定Width 改变Height
    public void AutoChangeHeight(Text text)
    {
        Vector2 v2 = rect_Content.rect.size;

        rect_Content.SetSizeWithCurrentAnchors(RectTransform.Axis.Horizontal, v2.x);
        rect_Content.SetSizeWithCurrentAnchors(RectTransform.Axis.Vertical,text.preferredHeight);
    }

    //固定Height 改变Height
    public void AutoChangeWidth(Text text)
    {
        Vector2 v2 = rect_Content.rect.size;

        rect_Content.SetSizeWithCurrentAnchors(RectTransform.Axis.Vertical, v2.y);
        rect_Content.SetSizeWithCurrentAnchors(RectTransform.Axis.Horizontal, text.preferredWidth);
    }
}