// 打开一个二进制文件,fileName为绝对路径
public static void openFile(string fileName, ref byte[] fileBuffer)
{
try
{
#if !UNITY_ANDROID || UNITY_EDITOR
FileStream fs = new FileStream(fileName, FileMode.Open, FileAccess.Read);
int fileSize = (int)fs.Length;
fileBuffer = new byte[fileSize];
fs.Read(fileBuffer, 0, fileSize);
fs.Close();
fs.Dispose();
#else
// 安卓平台如果要读取StreamingAssets下的文件,只能使用AssetManager
if (startWith(fileName, CommonDefine.F_STREAMING_ASSETS_PATH))
{
// 改为相对路径
fileName = fileName.Substring(CommonDefine.F_STREAMING_ASSETS_PATH.Length, fileName.Length - CommonDefine.F_STREAMING_ASSETS_PATH.Length);
fileBuffer = AndroidAssetLoader.loadAsset(fileName);
}
// 安卓平台如果要读取persistentDataPath的文件,则可以使用File
else if (startWith(fileName, CommonDefine.F_PERSISTENT_DATA_PATH))
{
fileBuffer = AndroidAssetLoader.loadFile(fileName);
}
else
{
UnityUtility.logError("openFile invalid path : " + fileName);
}
#endif
}
catch (Exception)
{
UnityUtility.logInfo("open file failed! filename : " + fileName);
}
}
// 同步加载资源包
public void loadAssetBundle(bool persistentFirst)
{
if (mLoaded != LOAD_STATE.LS_UNLOAD)
{
return;
}
// 先确保所有依赖项已经加载
foreach (var info in mParents)
{
info.Value.loadAssetBundle(persistentFirst);
}
// 然后加载AssetBundle
#if UNITY_ANDROID && !UNITY_EDITOR
byte[] assetBundleBuffer = null;
// 先去persistentDataPath中查找资源
if (persistentFirst)
{
assetBundleBuffer = AndroidAssetLoader.loadFile(CommonDefine.F_PERSISTENT_DATA_PATH + mBundleName + CommonDefine.ASSET_BUNDLE_SUFFIX);
}
// 找不到再去StreamingAssets下查找
if (assetBundleBuffer == null)
{
assetBundleBuffer = AndroidAssetLoader.loadAsset(mBundleName + CommonDefine.ASSET_BUNDLE_SUFFIX);
}
mAssetBundle = AssetBundle.LoadFromMemory(assetBundleBuffer);
#else
// 先去persistentDataPath中查找资源
if (persistentFirst && isFileExist(CommonDefine.F_PERSISTENT_DATA_PATH + mBundleName + CommonDefine.ASSET_BUNDLE_SUFFIX))
{
mAssetBundle = AssetBundle.LoadFromFile(CommonDefine.F_PERSISTENT_DATA_PATH + mBundleName + CommonDefine.ASSET_BUNDLE_SUFFIX);
}
// 找不到再去StreamingAssets下查找
if (mAssetBundle == null && isFileExist(CommonDefine.F_STREAMING_ASSETS_PATH + mBundleName + CommonDefine.ASSET_BUNDLE_SUFFIX))
{
mAssetBundle = AssetBundle.LoadFromFile(CommonDefine.F_STREAMING_ASSETS_PATH + mBundleName + CommonDefine.ASSET_BUNDLE_SUFFIX);
}
#endif
if (mAssetBundle == null)
{
logError("can not load asset bundle : " + mBundleName);
return;
}
// 加载其中的所有资源
List <string> assetNameList = new List <string>(mAssetList.Keys);
int assetCount = assetNameList.Count;
for (int i = 0; i < assetCount; ++i)
{
UnityEngine.Object obj = mAssetBundle.LoadAsset(CommonDefine.P_RESOURCE_PATH + assetNameList[i]);
mAssetList[assetNameList[i]].mAssetObject = obj;
}
mLoaded = LOAD_STATE.LS_LOADED;
afterLoaded();
}
// 打开一个二进制文件,fileName为绝对路径,返回值为文件长度
// 使用完毕后需要使用releaseFileBuffer回收文件内存
public static int openFile(string fileName, out byte[] fileBuffer, bool errorIfNull)
{
fileBuffer = null;
try
{
#if !UNITY_ANDROID || UNITY_EDITOR
FileStream fs = new FileStream(fileName, FileMode.Open, FileAccess.Read);
if (fs == null)
{
if (errorIfNull)
{
UnityUtility.log("open file failed! filename : " + fileName);
}
return(0);
}
int fileSize = (int)fs.Length;
fileBuffer = FrameBase.mBytesPoolThread.newBytes(getGreaterPow2(fileSize));
fs.Read(fileBuffer, 0, fileSize);
fs.Close();
fs.Dispose();
return(fileSize);
#else
// 安卓平台如果要读取StreamingAssets下的文件,只能使用AssetManager
if (startWith(fileName, FrameDefine.F_STREAMING_ASSETS_PATH))
{
// 改为相对路径
fileName = fileName.Substring(FrameDefine.F_STREAMING_ASSETS_PATH.Length, fileName.Length - FrameDefine.F_STREAMING_ASSETS_PATH.Length);
fileBuffer = AndroidAssetLoader.loadAsset(fileName, errorIfNull);
}
// 安卓平台如果要读取persistentDataPath的文件,则可以使用File
else if (startWith(fileName, FrameDefine.F_PERSISTENT_DATA_PATH))
{
fileBuffer = AndroidAssetLoader.loadFile(fileName, errorIfNull);
}
else
{
UnityUtility.logError("openFile invalid path : " + fileName);
}
return(fileBuffer.Length);
#endif
}
catch (Exception)
{
UnityUtility.log("open file failed! filename : " + fileName);
}
return(0);
}