如何在应用程序 package 中获取 Android 资产文件夹的路径

Question

I have a whole folder structure that I want to copy from my assets folder. However, the mContext.getAssets().open() seems to only want a filename so that it can return an InputStream, which is only suitable for copying a single file. What I need is a File made from the folder in my assets folder so that I can recurse through all the files and folders and copy them all.

Does anybody know how to get the path to the assets folder so that I can create a File object?

Edit: After some study it appears that you can't access files in the assets/ and raw/ folders with absolute paths to be able to create a File object. It probably has to do with the encryption of the app package. I hope someone can prove me wrong though!

Final edit: I ended up creating an array of strings to hold the extra asset files:

   private static final String[] DEFAULT_ALBUM_FILES =
   {INTRO_TO_FLASHUM_DIR+"03 Never Can Say Goodbye.m4a",
    INTRO_TO_FLASHUM_DIR+"11 Bossa Baroque.m4a",
    INTRO_TO_FLASHUM_DIR+"intro fling.3gp"};

I then iterated through this copying each file individually using the mContext.getAssets().open() to get the InputStream. I don't think it is currently possible to iterate through a folder in the assets using normal File operations.

Answer 1

AssetManager am = con.getAssets();//u have get assets path from this code
InputStream inputStream = null;         
inputStream = am.open("file.xml");

or

String file_name="ur.xml"    
inputStream = am.open("foldername/"+ur);

Answer 2

Could you move the folder to your /raw folder? Then you could use:

 com.your.package:raw/yourFile

Like this:

int resourceId = context.getResources().getIdentifier("com.your.package:raw/somefile.txt");
File f = new File(context.getResources().openRawResource(resourceId));

And here's someone doing it with the assets folder:

Android Assets with sub folders

  InputStream is = getAssets().open("subfolder/somefile.txt");

Answer 3

Use file:///android_asset for accessing the asset folder and then you can always give your subfolder there.

AssetManager assetManager = null;   // null ???  Get the AssetManager here.
        AssetFileDescriptor assetFileDescriptor = null;
        try{
           assetFileDescriptor = assetManager.openFd("file:///android_asset/yourfolder/file");
                FileDescriptor fd = assetFileDescriptor.getFileDescriptor();
       } catch (Exception e){}