TianJin_23/Assets/DateTimeUI/YearDropDown.cs

using UnityEngine;
using System.Collections;
using UnityEngine.UI;

public class YearDropDown : MonoBehaviour {

    // Use this for initialization   
    private Dropdown years;
    void Awake()
    {
        years = GetComponent<Dropdown>();
        setOptions();
    }
    void Start()
    {
        years.onValueChanged.AddListener(selectYear);
    }
    void OnDestroy()
    {
        years.onValueChanged.RemoveListener(selectYear);
    }

    // Update is called once per frame
    void Update () {
	
	}
    private void setOptions()
    {
        for (int i=1901;i<=2100;i++)
        {
            years.options.Add(new Dropdown.OptionData(i+"年"));
        }
    }
    void selectYear(int yearIndex)
    {
        //Debug.Log(year);
        var optionDate = years.options[yearIndex].text;
        var year = int.Parse(optionDate.Substring(0, optionDate.Length - 1));
        transform.parent.parent.GetComponent<DateTimeControl>().yearChanged(year);
    }
}