点击按钮人数加一，并存储数据_点击按钮后统计加一

方法一：

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
 
public class DataChange : MonoBehaviour {
 
    public Button StartBtn;
    public Text DataText;
    public int num;
	void Start ()
    {
        num = PlayerPrefs.GetInt("num", num);
 
        StartBtn.onClick.AddListener(() =>
        {
            num++;
            PlayerPrefs.SetInt("num", num);
        });
	}
	
	
	void Update ()
    {
        DataText.text = num.ToString();
        PlayerPrefs.GetInt("num",num);
	}
}

方法二：

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
 
/// <summary>
/// 点击按钮人数加一，关闭存储数据，再次点击时要从存的数据开始加
/// </summary>
public class TestPlayerPrefs : MonoBehaviour {
 
    private static TestPlayerPrefs instance;
    public int  Count =1;
    public Text CountText; //统计人数Text
 
    void Awake()
    {
        instance = this;
        Count = 0;
    }
    void Start()
    {
        Count = PlayerPrefs.GetInt("Count", Count);
        CountText.text = "" + PlayerPrefs.GetInt("Count").ToString();
 
    }
    //记录人数
    public static TestPlayerPrefs Instance
    {
        get
        {
            if (instance != null) return instance;
 
            else
            {
                return null;
            }
        }
    }
    //点击按钮人数加一并存储
    public void OnClick()
    {
        CountText.text = "" + ++Count;
        Debug.Log(Count);
        PlayerPrefs.SetInt("Count", Count);
    }
}