powerfun-unity/Assets/AndroidUpdate.cs

using Newtonsoft.Json.Linq;
using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using UnityEngine;
using UnityEngine.Networking;
using UnityEngine.UI;

public class AndroidUpdate : PFUIPanel
{
    // Start is called before the first frame update
    void Start()
    {
        
    }

    // Update is called once per frame
    void Update()
    {
        
    }
    JObject data { get; set; }
    public void StartDownload(JObject jo) 
    {
        transform.Find("Panel/CurrentVersion").GetComponent<Text>().text = $"Current Version: {App.AppVersion}";
        transform.Find("Panel/LastestVersion").GetComponent<Text>().text = $"Latest Version: {jo.Value<string>("Version")}";
        data = jo;
        var path = Application.temporaryCachePath + "/PowerFun.apk";
        StartCoroutine(DownLoadExe(data.Value<string>("Url"), path, (p, isComplete) =>
        {
            transform.Find("Panel/Size").GetComponent<Text>().text = $"Downloaded {Math.Round(p * 100, 0)}%";// string.Format(, a, b);
            transform.Find("Panel/Progress").GetComponent<Image>().fillAmount = (float)p;
            if (isComplete)
            {
                PlayerPrefs.SetString("exeVersion", data.Value<string>("Version"));
                new FileInfo(path + ".pfdownload").MoveTo(path);
                OpenApk(path);
                //Application.Quit();
            }
        }));
    }
    
    /*下载文件*/
    IEnumerator DownLoadExe(string url, string desFileName, Action<double, bool> OnDownloadProgressEvent)
    {
        string version = data.Value<string>("Version");
        if (File.Exists(desFileName))
        {
            //if(PlayerPrefs.GetString("exeVersion")==)
            if (version == null)
            {
                yield break;
            }
            else
            {
                if (version == PlayerPrefs.GetString("exeVersion"))
                {
                    OpenApk(desFileName);
                    //Application.Quit();
                    yield break;
                }
                else
                {
                    File.Delete(desFileName);
                }
            }

            //File.Delete(desFileName);
        }
        if (File.Exists(desFileName + ".pfdownload"))
        {
            File.Delete(desFileName + ".pfdownload");
        }

        using (var uwr = UnityWebRequest.Get(url))
        {
            var operation = uwr.SendWebRequest();

            while (!operation.isDone)
            {
                /* 
                 * as BugFinder metnioned in the comments
                 * what you want to track is uwr.downloadProgress
                 */
                var downloadDataProgress = uwr.downloadProgress * 100;

                /*
                 * use a float division here 
                 * I don't know what type downloadDataProgress is
                 * but if it is an int than you will always get 
                 * an int division <somethingSmallerThan100>/100 = 0
                 */
                //progressBar.fillAmount = downloadDataProgress / 100.0f;
                OnDownloadProgressEvent.Invoke(uwr.downloadProgress, false);
                Debug.Log("Download: " + downloadDataProgress);
                yield return null;
            }
            ByteArrayToFile(desFileName + ".pfdownload", uwr.downloadHandler.data);
            OnDownloadProgressEvent.Invoke(1, true);
        }
    }
    bool ByteArrayToFile(string fileName, byte[] byteArray)
    {
        try
        {
            using (var fs = new FileStream(fileName, FileMode.Create, FileAccess.Write))
            {
                fs.Write(byteArray, 0, byteArray.Length);
                return true;
            }
        }
        catch (Exception ex)
        {
            Debug.LogError(ex);
            return false;
        }
    }

    void OpenApk(string path)
    {
#if !UNITY_EDITOR
        AndroidJavaClass jc = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
        var activity = jc.GetStatic<AndroidJavaObject>("currentActivity");
        //Debug.Log("打开apk"+ "file://" + path);
        activity.Call("OpenApk", path);
        Application.Quit();
#endif
    }
}