/// <summary>
/// 根据build assetbundle后返回的AssetBundleManifest 生成一个本次AssetBundle的信息文件，包含所有的AssetBundle文件名与其hash值。
/// </summary>
/// <param name="mf">build assetbundle后返回的manifest对象</param>
/// <param name="versionName">一般是平台名字，也可以加其他文件夹在</param>
private static void GenABVersionInfo(AssetBundleManifest mf, string versionName)
{
var abpi = ABSH.GetABInfoXmlPath(versionName);
XmlDocument xmlDoc = null;
//创建XML文档实例
xmlDoc = new XmlDocument();
XmlElement AllRoot = xmlDoc.CreateElement(AssetBundleSettingHelper.xmlNode_AssetBundles);
//创建个时间属性，可以更直观的对比不同版本的
AllRoot.SetAttribute(AssetBundleSettingHelper.xmlAttribute_CreateTime, VersionInfo.GetVersionString());
xmlDoc.AppendChild(AllRoot);
//输出结果按名字排序，以后要对比两个文件也方面一些
var abNames = mf.GetAllAssetBundles().OrderBy(n => n).Select(key => AssetBundleSettingHelper.PathToPlatformFormat(key).ToLower());
List <KeyValuePair <long, XmlElement> > allE = new List <KeyValuePair <long, XmlElement> >();
foreach (var abName in abNames)
{
//bundle大小也输出一下
FileInfo fi = new FileInfo(AssetBundleSettingHelper.Combine(abpi.Dir_Relative, abName));
{
//把bundle大小也写到AB依赖中
string name = abName.Substring(0, abName.IndexOf(ABSH.AssetBundelExtName));
var drac = ABDependenciesPositive.GetDRAC(name, true);
if (drac != null)
{
drac.FinalSize = fi.Length;
}
}
var hash = mf.GetAssetBundleHash(abName);
XmlElement node = xmlDoc.CreateElement(AssetBundleSettingHelper.xmlNode_AB);
node.SetAttribute(AssetBundleSettingHelper.xmlNode_Name, abName);
node.SetAttribute(AssetBundleSettingHelper.xmlNode_Hash, hash.ToString());
node.SetAttribute(AssetBundleSettingHelper.xmlNode_ABSize, fi.Length.ToString());
if (fi.Length < 1024)
{
node.SetAttribute(AssetBundleSettingHelper.xmlNode_ABSizeXB, ((float)fi.Length).ToString() + " B");
}
else if (fi.Length >= 1024 && fi.Length < 1024 * 1024)
{
node.SetAttribute(AssetBundleSettingHelper.xmlNode_ABSizeXB, ((float)fi.Length / 1024).ToString("f3") + " KB");
}
else
{
node.SetAttribute(AssetBundleSettingHelper.xmlNode_ABSizeXB, ((float)fi.Length / (1024 * 1024)).ToString("f3") + " MB");
}
allE.Add(new KeyValuePair <long, XmlElement>(fi.Length, node));
}
foreach (var node in allE.OrderByDescending(k => k.Key).ThenBy(k => k.Value.GetAttribute(AssetBundleSettingHelper.xmlNode_Name)))
{
AllRoot.AppendChild(node.Value);
}
//同名文件直接覆盖
xmlDoc.Save(abpi.FullName);
xmlDoc = VersionInfo.OutputXmlDoc();
abpi = ABSH.GetABXmlPath(versionName, VersionXmlInfo.FileName);
xmlDoc.Save(abpi.FullName);
}