Unity UGUI Button鼠标的悬停事件(利用重写unity中的button来实现)

我就废话不多说了，大家还是直接看代码吧~

using UnityEngine; 
using System.Collections; 
using UnityEngine.UI; 
using UnityEngine.EventSystems; 
public class LearnButton : Button 
{ 
    /// 
    /// 配合Unity的其他方法使用，就能达到你想要的效果！这里只是抛砖引玉，大家有更好的方法欢迎跟我交流！ 
    /// 
    protected override void DoStateTransition(SelectionState state, bool instant) 
    {
 
        base.DoStateTransition(state, instant); 
        switch (state) 
        {
 
            case SelectionState.Disabled: 
                break; 
            case SelectionState.Highlighted: 
                Debug.Log("鼠标移到button上！"); 
                break; 
            case SelectionState.Normal: 
                Debug.Log("鼠标离开Button！"); 
                break; 
            case SelectionState.Pressed: 
                break; 
            default: 
                break; 
        } 
    } 
}