用于此可选择对象的 SpriteState。
如果过渡不是 SpriteSwap，修改将不可见。
using UnityEngine;
using System.Collections;
using UnityEngine.UI; // Required when Using UI elements.
public class ExampleClass : MonoBehaviour
{
//Creates an instance of a sprite state (This includes the highlighted, pressed and disabled sprite.
public SpriteState sprState = new SpriteState();
public Button btnMain;
void Start()
{
//Assigns the new sprite states to the button.
btnMain.spriteState = sprState;
}
}