unity笔记-1128-UGUI替换Image图片的三种方式

转载自 http://www.manew.com/thread-96801-1-1.html  网虫虫

在NGUI中，我们可以直接用spriteName = “想要替换的图片名称”;  就可以很方便的替换资源

而UGUI却相对要麻烦一点，下面为大家介绍比较常用的三种替换方式。

一、

using UnityEngine;
using System.Collections;
using UnityEngine.UI;
  
public class Test : MonoBehaviour
{
  
    [SerializeField]
    Image myImage;
  
    // Use this for initialization
    void Start()
    {
        myImage.sprite = Resources.Load("Image/pic", typeof(Sprite)) as Sprite;     // Image/pic 在 Assets/Resources/目录下
    }
}

二、

using UnityEngine;
using System.Collections;
using UnityEngine.UI;
  
public class Test : MonoBehaviour
{
  
    [SerializeField]
    Image myImage;
  
    [SerializeField]
    Sprite mySprite;
  
    // Use this for initialization
    void Start()
    {
        myImage.sprite = mySprite;      // mySprite 为外部指定的图片资源
    }
}

三、

using UnityEngine;
using System.Collections;
using UnityEngine.UI;
  
public class Test : MonoBehaviour {
  
    [SerializeField]
    Image myImage;
  
    // Use this for initialization
    void Start () {
        StartCoroutine(GetImage());
    }
  
    IEnumerator GetImage()
    {
        string url = "http://www.5dbb.com/images/logo.gif";
        WWW www = new WWW(url);
        yield return www;
        if (string.IsNullOrEmpty(www.error))
        {
            Texture2D tex = www.texture;
            Sprite temp = Sprite.Create(tex, new Rect(0, 0, tex.width, tex.height), new Vector2(0, 0));
            myImage.sprite = temp;
        }
    }
}