[UGUI] Eight, Dropdown drop-down box

Click to access the drop-down menu (Dropdown)
to watch the video Dropdown

1. Dropdown panel

2. Script binding event

If it is Dropdown Pro, it needs to be introducedusing static TMPro.TMP_Dropdown;

TMP_Dropdown dro = GetComponentInChildren<TMP_Dropdown>();
// 修改选项
dro.options = new List<OptionData> {
    
    
    new OptionData("选项001"),
    new OptionData("选项002"),
    new OptionData("选项003", null) // 可以传入图片
};
dro.options.Add(new OptionData("选项004")); // 调用 Add追加
dro.onValueChanged.AddListener(val => Debug.Log(val));