unity ugui image更換圖片

1：利用資源加載方式

using UnityEngine;  
using System.Collections;  
using UnityEngine.UI;  
    
public class ChangeImage : MonoBehaviour  
{   
  public   Image myImage;  
    
   // Use this for initialization  
    void Start()  
    {  
//需要自己在Assets下創建Resources文件夾，imagename是Resources下的圖片名字
        myImage.sprite = Resources.Load("imagename", typeof(Sprite)) as Sprite;     // Image/pic 在 Assets/Resources/目錄下  
    }  
}  

2:直接拉取賦值

using UnityEngine;  
using System.Collections; 
using UnityEngine.UI;  
    
public class ChangeImage : MonoBehaviour  
{   
  public   Image myImage;  
  public   Sprite mySprite;  
    // Use this for initialization  
    void Start()  
    {  
        myImage.sprite = mySprite;    
    }  
}

3：網絡下載更換

using UnityEngine;  
using System.Collections; 
using UnityEngine.UI;  
    
public class ChangeImage : MonoBehaviour  
{   
  public   Image myImage;  
 
    // Use this for initialization  
    void Start()  
    {  
       StartCoroutine(WWWGetImage());
    }  


     IEnumerator WWWGetImage()
  {
      string url = "http://pic02.1sucai.com/190302/330853-1Z302203J169-lp.jpg";
      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), Vector2.zero);
         myImage.sprite = temp;
      }
  }  

}