Unity利用UGUI制作提示框效果

using DG.Tweening;
using UnityEngine;
using UnityEngine.UI;
 
public class ShowTip : MonoBehaviour
{
 public CanvasGroup tips;
 public void OnClickBtn()
 {
 ShowTips(tips, "Hello world");
 }
 
 private void ShowTips(CanvasGroup tipCanvasGroup, string msg)
 {
 tipCanvasGroup.GetComponentInChildren<Text>().text = msg;
 
 tipCanvasGroup.alpha = 0;
 DOTween.Kill(tipCanvasGroup);
 Sequence sequence = tipCanvasGroup.DOSequence();
 sequence.Append(tipCanvasGroup.DOFade(1, 0.8f));
 sequence.AppendInterval(2.0f);
 sequence.Append(tipCanvasGroup.DOFade(0, 1.0f));
 }
}
 
public static class GameObjExt
{
 public static Sequence DOSequence(this UnityEngine.Object seq)
 {
 Sequence sequence = DOTween.Sequence();
 sequence.target = seq;
 
 return sequence;
 }
}