Unity/UIDropdown

Dropdown追加方法

1. UI/Dropdownを追加
2. Dropdownを選択肢Inspectorのoptionsから選択項目を編集する

Dropdown選択値取得サンプル

using UnityEngine;
using UnityEngine.UI;
public class Example : MonoBehaviour
{
    Dropdown m_Dropdown;
    public Text m_Text;
    void Start()
    {
        //Fetch the Dropdown GameObject
        m_Dropdown = GetComponent<Dropdown>();
        //Add listener for when the value of the Dropdown changes, to take action
        m_Dropdown.onValueChanged.AddListener(delegate {
                DropdownValueChanged(m_Dropdown);
            });
        //Initialise the Text to say the first value of the Dropdown
        m_Text.text = "First Value : " + m_Dropdown.value;
    }
    //Ouput the new value of the Dropdown into Text
    void DropdownValueChanged(Dropdown change)
    {
        m_Text.text =  "New Value : " + change.value;
    }
}

参考：https://docs.unity3d.com/ja/current/ScriptReference/UI.Dropdown-onValueChanged.html

選択項目の高さが狭い場合

templates/viewportのscaleのyを1から3とかにする