Trouble extracting from Zip with Dotnetzip on Android

Unity Engine
,
1

Hi Guys,

This is our code which extracts a .unity3d.compressed file to a unity3d file. It works in PC standalone and in the Editor in Android mode.

  public static void UncompressFile(string pathOfFileToRead, string pathOfFileToCreate)
    {

        using (ZipFile zip1 = ZipFile.Read(pathOfFileToRead))
		{
            foreach (ZipEntry e in zip1)
            {
				e.Extract(pathOfFileToCreate, ExtractExistingFileAction.OverwriteSilently);
            }
        }

		Debug.Log("Uncompressed successfully");
    }

But when I build I get this on an Android device. I have set WriteAccess to External in the Build Settings.

I/Unity   (19121): UnauthorizedAccessException: Access to the path '/storage/sdc
ard0/Android/data/com.Lightmare.InfinityWars/files/Android/Downloaded Cards/Stat
ic/IW2013/Aberion, the Fist of Dawn.unity3d' is denied.
I/Unity   (19121):   at System.IO.FileStream..ctor (System.String path, FileMode
 mode, FileAccess access, FileShare share, Int32 bufferSize, Boolean anonymous,
FileOptions options) [0x00000] in <filename unknown>:0
I/Unity   (19121):   at System.IO.FileStream..ctor (System.String path, FileMode
 mode) [0x00000] in <filename unknown>:0
I/Unity   (19121):   at (wrapper remoting-invoke-with-check) System.IO.FileStrea
m:.ctor (string,System.IO.FileMode)
I/Unity   (19121):   at Ionic.Zip.ZipEntry.InternalExtract (System.String baseDi
r, System.IO.Stream outstream, System.String password) [0x00000] in <filename un
known>:0
I/Unity   (19121): Rethrow as ZipException: Cannot extract
I/Unity   (19121):   at Ionic.Zip.ZipEntry.InternalExtract (System.String baseDi
r, System.IO.Stream outstream, System.String password) [0x00000] in <filename un
known>:0
I/Unity   (19121):   at Ionic.Zip.ZipEntry.Extract (System.String baseDirectory,
 ExtractExistingFileAction

I have also checked and both the file and directory do exist. We are using Application.persistentDataPath. Any ideas what I can do to resolve this? Or even ideas why it might work on PC but not on the device?

2

I’ve encountered the same issue… Were you able to resolve this?

3

Where is the zip file sitting in your project in the editor?

4

So this guy made this version that works with the ionic.zip library…

The problem is, he fixed it for working with android/unix/linux for zipping directories but now it can’t zip for windows! So now I’m looking for a tar compression alternative instead.

5

A solution is:
Copy all I8N*.dll for inside the project!
Path is: C:\YOUR_UNITY_INSTALATION\Editor\Data\Mono\lib\mono\unity