【Unity】动态修改 Button 高亮，按下的sprite_unity脚本设置highlightedsprite

1.首先要切换按钮的 Transition 为 SpriteSwap

2.拖拽实现

3.代码控制

c#：

public Button button;
    public Sprite normalSprite;         //正常显示图片
    public Sprite highlightedSprite;    //高亮显示图片
    public Sprite pressedSprite;        //点击显示图片
    public Sprite disabledSprite;       //禁用显示图片
    private void OnClickButton()
    {
        button.GetComponent<Image>().sprite = normalSprite;
        //设置按钮模式改为 SpriteSwap
        button.transition = Selectable.Transition.SpriteSwap;
        //设置变化状态
        SpriteState state = new SpriteState();
        state.highlightedSprite = highlightedSprite;
        state.pressedSprite = pressedSprite;
        state.disabledSprite = disabledSprite;
        //赋值
        button.spriteState = state;
    }

Lua：

原理是一样的

local curr_btn = self._control.class_btn
local sprite_state = UnityEngine.UI.SpriteState.New()
sprite_state.pressedSprite = ResourceLoader:loadSprite("res url")
--赋值
curr_btn .button.spriteState = sprite_state