导入DoTween插件（放到Plugins文件夹下）
using UnityEngine; using DG.Tweening; public class ButtonBreath : MonoBehaviour { // Start is called before the first frame update void Start() { //在自身的大小上加上0.2倍 Vector3 effectScale = transform.localScale - new Vector3(0.2f, 0.2f, 0.2f); //设置动画 Tweener tweener = transform.DOScale(effectScale, 1f); //设置动画loop属性 tweener.SetLoops(-1, LoopType.Yoyo); tweener.Play(); } }