Unity安卓端 复制到沙河路径文件

因为安卓的某些权限

在Windows支持的File.Copy 不支持在安卓端进行拷贝

所以可以使用WWW加载的方式对文件进行拷贝  粘贴了 部分代码

using Data;
using EditorTool;
using LitJson;
using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Threading;
using UnityEngine;
using UnityEngine.Networking;
using UnityEngine.UI;
using XCharts;

public class TestLine_chart : MonoBehaviour
{
    //保存json文件路径
    string JsonPath()
    {
        return Application.persistentDataPath + "/JsonTest.txt";
    }
    //玩家信息
    [Serializable]
    public class Player
    {
        public int id;
        public string name;
        public int damage;
    }
    LineChart chart = null;
    private void Awake()
    {
        FirstLogin();
        chart = gameObject.GetComponentInChildren<LineChart>();
    }
    void Start()
    {
        Invoke("refreshChart", 1);
    }
    void FirstLogin()
    {
        if (PlayerPrefs.HasKey("FirstLogin2"))
        {
            Debug.Log("不是第一次运行");
        }
        else
        {
            StartCoroutine(Get());
            Debug.Log("第一次");
        }
    }
    IEnumerator Get()
    {

        UnityWebRequest webRequest = UnityWebRequest.Get(Application.streamingAssetsPath + "/JsonTest.txt");

        yield return webRequest.SendWebRequest();
        //异常处理，很多博文用了error!=null这是错误的，请看下文其他属性部分
        if (webRequest.isHttpError || webRequest.isNetworkError)
            Debug.Log(webRequest.error);
        else
        {
            // Debug.Log(webRequest.downloadHandler.text);
            byte[] bytes = webRequest.downloadHandler.data;
            //创建文件
            CreatFile(Application.persistentDataPath + "/JsonTest.txt", bytes);
        }
    }
    public static void CreatFile(string filePath, byte[] bytes)
    {
        FileInfo file = new FileInfo(filePath);
        Stream stream = file.Create();
        stream.Write(bytes, 0, bytes.Length);
        stream.Close();
        stream.Dispose();
    }
    private void LateUpdate()
    {
        PlayerPrefs.SetInt("FirstLogin2", 10);
    }
    public void refreshChart()
    {
        //设置标题：
        chart.title.show = true;
        chart.title.text = "Line Simple";
        //设置提示框和图例是否显示：
        chart.tooltip.show = true;
        chart.legend.show = false;
        //设置是否使用双坐标轴和坐标轴类型：
        chart.xAxises[0].show = true;
        chart.xAxises[1].show = false;
        chart.yAxises[0].show = true;
        chart.yAxises[1].show = false;
        chart.xAxises[0].type = Axis.AxisType.Category;
        chart.yAxises[0].type = Axis.AxisType.Value;

        //设置坐标轴分割线：
        chart.xAxises[0].splitNumber = 10;
        chart.xAxises[0].boundaryGap = true;
        //清空数据，添加Line类型的Serie用于接收数据：
        chart.RemoveData();
        chart.AddSerie(SerieType.Line);

        if (!File.Exists(JsonPath()))
        {
            Debug.Log("读取的文件不存在！");
            return;
        }
        string json = File.ReadAllText(JsonPath());
        Player[] skillArray = JsonMapper.ToObject<Player[]>(json);
        foreach (Player item in skillArray)
        {
            chart.AddXAxisData(item.name);
            chart.AddData(0, item.damage);
        }
    }

    /// <summary>
    /// 保存截屏图片，并且刷新相册 Android
    /// </summary>
    /// <param name="name">若空就按照时间命名</param>
    public void CaptureScreenshot()
    {
        string _name = "Screenshot_" + GetCurTime() + ".png";
        StartCoroutine(CutImage(_name));
        //在手机上显示路径
    }
    //截屏并保存
    IEnumerator CutImage(string name)
    {
        //图片大小  
        Texture2D tex = new Texture2D(Screen.width, Screen.height, TextureFormat.RGB24, true);
        yield return new WaitForEndOfFrame();
        tex.ReadPixels(new Rect(0, 0, Screen.width, Screen.height), 0, 0, true);
        tex.Apply();
        yield return tex;
        byte[] byt = tex.EncodeToPNG();

        string path = Application.persistentDataPath.Substring(0, Application.persistentDataPath.IndexOf("Android"));

        File.WriteAllBytes(path + "/DCIM/Camera/" + name, byt);   //保存到  安卓手机的  DCIM/下的Camera   文件夹下
                                                                  // File.WriteAllBytes(path + "/截屏/" + name, byt);         //保存到安卓手机的 文件管理下面的  《截屏》文件夹下      
        string[] paths = new string[1];
        paths[0] = path;
        ScanFile(paths);
    }
    //刷新图片，显示到相册中
    void ScanFile(string[] path)
    {
        using (AndroidJavaClass PlayerActivity = new AndroidJavaClass("com.unity3d.player.UnityPlayer"))
        {
            AndroidJavaObject playerActivity = PlayerActivity.GetStatic<AndroidJavaObject>("currentActivity");
            using (AndroidJavaObject Conn = new AndroidJavaObject("android.media.MediaScannerConnection", playerActivity, null))
            {
                Conn.CallStatic("scanFile", playerActivity, path, null, null);
            }
        }
    }
    /// <summary>
    /// 获取当前年月日时分秒，如20181001444
    /// </summary>
    /// <returns></returns>
    string GetCurTime()
    {
        return DateTime.Now.Year.ToString() + DateTime.Now.Month.ToString() + DateTime.Now.Day.ToString()
            + DateTime.Now.Hour.ToString() + DateTime.Now.Minute.ToString() + DateTime.Now.Second.ToString();
    }
}