添加Verison写入方法
我们在BuildApp中添加新的方法
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| static void SaveVersion(string version,string package)
{
string content = "Version|" + version + ";PackageName|" + package + ";";
string savePath = Application.dataPath + "/Resources/Version.txt";
string lineOne = "";
string all = "";
using(FileStream fs = new FileStream(savePath, FileMode.OpenOrCreate,FileAccess.ReadWrite,FileShare.ReadWrite))
{
using(StreamReader sr = new StreamReader(fs,System.Text.Encoding.UTF8))
{
all = sr.ReadToEnd();
lineOne = all.Split('\r')[0];
}
}
using(FileStream fs = new FileStream(savePath, FileMode.OpenOrCreate))
{
using (StreamWriter sw = new StreamWriter(fs, System.Text.Encoding.UTF8))
{
if(string.IsNullOrEmpty(all))
{
all = content;
}
else
{
all = all.Replace(lineOne, content);
}
sw.Write(all);
}
}
}
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使用这个方法后，工程内的Resource文件夹下就会有Version.txt文件
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| Version|0.1;PackageName|com.DefaultCompany.ResLoadPrg;
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这个文件可能会包含更多信息，比如服务器和端口号，不同平台的包名解释等等。所以在方法中我们先读取此文件，再写入。
在BuildApp的Build方法中调用此方法
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| [MenuItem("Build/标准包")]
public static void Build()
{
BundleEditor.Build();
SaveVersion(PlayerSettings.bundleVersion, PlayerSettings.applicationIdentifier);
}
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资源信息类
资源信息类用于记录所有的ab包的包名、MD5码和Size。用于比较生成热更包。
在工程文件夹下的ResFrame——Frames——ResourceFrm——Download文件夹下新建ABMD5脚本文件
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| using System.Collections.Generic;
using System.Xml.Serialization;
[System.Serializable]
public class ABMD5
{
[XmlElement("ABMD5List")]
public List<ABMD5Base> ABMD5List { get; set; }
}
[System.Serializable]
public class ABMD5Base
{
[XmlAttribute("Name")]
public string Name { get; set; }
[XmlAttribute("MD5")]
public string MD5 { get; set; }
[XmlAttribute("Size")]
public float Size { get; set; }
}
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MD5码生成
在工程文件夹下的ResFrame——Frames——ResourceFrm下新建MD5Manager脚本文件
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| using UnityEngine;
using System;
using System.Security.Cryptography;
using System.IO;
using System.Text;
[Serializable]
public class MD5Manager : SingletonPattern<MD5Manager>
{
public void SaveMD5(string filePath, string md5SavePath)
{
string md5 = BuildFileMD5(filePath);
string name = md5SavePath + "_md5.dat";
if(File.Exists(name))
{
File.Delete(name);
}
StreamWriter sw = new StreamWriter(name,false, Encoding.UTF8);
if(sw!=null)
{
sw.Write(md5);
sw.Flush();
sw.Close();
}
}
public void SaveMD5(string filePath)
{
string md5 = BuildFileMD5(filePath);
string name = filePath + "_md5.dat";
if (File.Exists(name))
{
File.Delete(name);
}
StreamWriter sw = new StreamWriter(name, false, Encoding.UTF8);
if (sw != null)
{
sw.Write(md5);
sw.Flush();
sw.Close();
}
}
public string GetMD5(string filePath)
{
string md5Name = filePath + "_md5.dat";
try
{
StreamReader sr = new StreamReader(md5Name, Encoding.UTF8);
string content = sr.ReadToEnd();
sr.Close();
return content;
}
catch (Exception)
{
return string.Empty;
}
}
public string BuildFileMD5(string filePath)
{
string fileMD5 = null;
try
{
using (FileStream fs = File.OpenRead(filePath))
{
MD5 md5 = MD5.Create();
byte[] fileMD5Bytes = md5.ComputeHash(fs);
fileMD5 = FormatMD5(fileMD5Bytes);
}
}
catch (Exception e)
{
Debug.LogError(e);
}
return fileMD5;
}
string FormatMD5(byte[] data)
{
return System.BitConverter.ToString(data, 0, data.Length).Replace("-","").ToLower();
}
}
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添加信息写入方法
AB包的信息是需要在打AB包的时候生成的，我们给BundleEditor添加WriteABMD5方法，并在Build方法里，AssetBundle生成修改完成时调用
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| public static void Build()
{
for (int i = 0; i < oldNames.Length; i++)
{
AssetDatabase.RemoveAssetBundleName(oldNames[i], true);
EditorUtility.DisplayProgressBar("清除AB包名", "名字：" + oldNames[i],i*1.0f/oldNames.Length);
}
WriteABMD5();
AssetDatabase.SaveAssets();
AssetDatabase.Refresh();
EditorUtility.ClearProgressBar();
}
static void WriteABMD5()
{
DirectoryInfo directoryInfo = new DirectoryInfo(m_BundleTargetPath);
FileInfo[] fileInfos = directoryInfo.GetFiles("*",SearchOption.AllDirectories);
ABMD5 aBMD5 = new ABMD5();
aBMD5.ABMD5List = new List<ABMD5Base>();
for (int i = 0; i < fileInfos.Length; i++)
{
if (!fileInfos[i].Name.EndsWith(".meta") && !fileInfos[i].Name.EndsWith(".manifest"))
{
ABMD5Base aBMD5Base = new ABMD5Base();
aBMD5Base.Name = fileInfos[i].Name;
aBMD5Base.MD5 = MD5Manager.Instance.BuildFileMD5(fileInfos[i].FullName);
aBMD5Base.Size = fileInfos[i].Length / 1024.0f;
aBMD5.ABMD5List.Add(aBMD5Base);
}
}
string ABMD5Path = Application.dataPath + "/Resources/ABMD5.bytes";
BinarySerializeOpt.BinarySerialize(ABMD5Path, aBMD5);
}
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储存不同版本不同平台的ABMD5信息
经过上面的操作，每次打包的ABMD5信息都会储存在Resources文件夹内，但是每次打包，ABMD5信息都会被覆盖。我们需要把每次在不同的平台不同版本的ABMD5信息都给储存下来。从而能够比较文件更新的信息，筛选出真正需要更新的包。
在Unity工程文件夹（Assets的父文件夹）内新建Version文件夹。
注意要将Version文件夹上传SVN。
修改BundleEditor脚本，首先添加m_VersionMD5Path
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| public class BundleEditor
{
private static string m_VersionMD5Path = Application.dataPath + "/../Version/" + EditorUserBuildSettings.activeBuildTarget.ToString();
}
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然后修改WriteABMD5方法
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| static void WriteABMD5()
{
string ABMD5Path = Application.dataPath + "/Resources/ABMD5.bytes";
BinarySerializeOpt.BinarySerialize(ABMD5Path, aBMD5);
if (!Directory.Exists(m_VersionMD5Path))
{
Directory.CreateDirectory(m_VersionMD5Path);
}
string targetPath = m_VersionMD5Path + "/ABMD5_" + PlayerSettings.bundleVersion + ".bytes";
if (File.Exists(targetPath))
{
File.Delete(targetPath);
}
File.Copy(ABMD5Path, targetPath);
}
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