/// <summary>
/// 第一次使用LuaContext类时触发
/// </summary>
static LuaContext()
{
UNIEnv.setup();
_contexts = new Dictionary <int, WeakReference> ();
_regTypes = new List <Type> ();
//反射所有类型
getRegTypes();
}
/// <summary>
/// 从Asset中拷贝lua文件
/// </summary>
/// <param name="path">目录路径.</param>
private void copyLuaFileFromAsset(string path)
{
AndroidJavaObject currentActivity = UNIEnv.getCurrentActivity();
AndroidJavaObject assetManager = currentActivity.Call <AndroidJavaObject> ("getAssets", new object[0]);
string[] subpaths = assetManager.Call <string[]> ("list", path);
if (subpaths.Length > 0)
{
//当前path为目录
foreach (string subpath in subpaths)
{
string targetPath = path == "" ? subpath : string.Format("{0}/{1}", path, subpath);
copyLuaFileFromAsset(targetPath);
}
}
else
{
//当前path为文件
if (path.ToLower().EndsWith(".lua"))
{
//为lua文件，则进行拷贝
string destFilePath = getLuaCacheFilePath(path);
AndroidJavaObject inputStream = assetManager.Call <AndroidJavaObject>("open", path);
using (MemoryStream ms = new MemoryStream())
{
try
{
IntPtr buffer = AndroidJNI.NewByteArray(1024);
jvalue[] args = new jvalue[1];
args[0].l = buffer;
IntPtr readMethodId = AndroidJNIHelper.GetMethodID(inputStream.GetRawClass(), "read", "([B)I");
int hasRead = 0;
while ((hasRead = AndroidJNI.CallIntMethod(inputStream.GetRawObject(), readMethodId, args)) != -1)
{
byte[] byteArray = AndroidJNIHelper.ConvertFromJNIArray <byte[]>(buffer);
ms.Write(byteArray, 0, hasRead);
}
ms.Seek(0, SeekOrigin.Begin);
byte[] bytes = new byte[ms.Length];
ms.Read(bytes, 0, bytes.Length);
File.WriteAllBytes(destFilePath, bytes);
}
finally
{
ms.Close();
}
}
}
}
}
/// <summary>
/// 获取Lua文件缓存目录
/// </summary>
/// <returns>换粗目录对象.</returns>
private AndroidJavaObject getLuaCacheDir()
{
AndroidJavaObject currentActivity = UNIEnv.getCurrentActivity();
AndroidJavaClass EnvironmentClass = new AndroidJavaClass("android.os.Environment");
int perm = currentActivity.Call <int> ("checkCallingOrSelfPermission", new object[] { "android.permission.WRITE_EXTERNAL_STORAGE" });
AndroidJavaObject cacheDir = null;
if ("mounted" == EnvironmentClass.CallStatic <string> ("getExternalStorageState", new object[0]) && perm == 0)
{
cacheDir = currentActivity.Call <AndroidJavaObject> ("getExternalCacheDir", new object[0]);
}
if (cacheDir == null)
{
cacheDir = currentActivity.Call <AndroidJavaObject> ("getCacheDir", new object[0]);
}
string cachePath = cacheDir.Call <string>("toString", new object[0]);
return(new AndroidJavaObject("java.io.File", string.Format("{0}/lua", cachePath)));
}
/// <summary>
/// 第一次使用LuaContext类时触发
/// </summary>
static LuaContext()
{
UNIEnv.setup();
_contexts = new Dictionary <int, WeakReference> ();
}