How to pass a file path which is in assets folder to File(String path)?

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Android - How to determine the Absolute path for specific file from Assets?

I am trying to pass a file to File(String path) class. Is there a way to find absolute path of the file in assets folder and pass it to File(). I tried file:///android_asset/myfoldername/myfilename as path string but it didnt work. Any idea?

score 55 · Accepted Answer · edited Jan 06 '15 at 19:27

55

AFAIK, you can't create a File from an assets file because these are stored in the apk, that means there is no path to an assets folder.

But, you can try to create that File using a buffer and the AssetManager (it provides access to an application's raw asset files).

Try to do something like:

AssetManager am = getAssets();
InputStream inputStream = am.open("myfoldername/myfilename");
File file = createFileFromInputStream(inputStream);

private File createFileFromInputStream(InputStream inputStream) {

   try{
      File f = new File(my_file_name);
      OutputStream outputStream = new FileOutputStream(f);
      byte buffer[] = new byte[1024];
      int length = 0;

      while((length=inputStream.read(buffer)) > 0) {
        outputStream.write(buffer,0,length);
      }

      outputStream.close();
      inputStream.close();

      return f;
   }catch (IOException e) {
         //Logging exception
   }

   return null;
}

Let me know about your progress.

edited Jan 06 '15 at 19:27

Kirill Bubochkin

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answered Aug 05 '12 at 23:12

yugidroid

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2

not working missing method – Harsh Trivedi Jul 09 '13 at 13:11
1

man your code is all messed up, you really need to make it clear – desgraci Oct 03 '13 at 14:38
1

@desgraci, Sorry. It's done. I didn't realize how confuse it was. Copy paste things :D – yugidroid Oct 03 '13 at 17:15
thanks man, but you missed the return :p – desgraci Oct 03 '13 at 17:56
so you are saying whenever we need we need to write into a file ? doesn't sounds good !! – Daud Arfin Nov 13 '13 at 10:22
1

It might help to add the dir to write the file to, e.g. : File f = new File(getFilesDir()+"/my_file_name.jpg"); – Droid Teahouse Jul 20 '17 at 23:54

score 9 · Answer 2 · answered Aug 05 '12 at 21:28

9

Unless you unpack them, assets remain inside the apk. Accordingly, there isn't a path you can feed into a File. The path you've given in your question will work with/in a WebView, but I think that's a special case for WebView.

You'll need to unpack the file or use it directly.

If you have a Context, you can use context.getAssets().open("myfoldername/myfilename"); to open an InputStream on the file. With the InputStream you can use it directly, or write it out somewhere (after which you can use it with File).

answered Aug 05 '12 at 21:28

nEx.Software

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Thanks a lot. it helped. but the code below saves me from writing the file somewhere. – akd Aug 06 '12 at 02:45
@akd which code below? Are you talking about yugidroid code? Because that code is creating a new file is it not? – b.lyte Mar 07 '16 at 22:47
this was back in 2012. I can't remember really. but I guess I am talking about yugidroid code as there are only 2 answers. And I guess as yugidroid stated that it provides access to an application's raw asset files instead of creating a file. – akd Mar 07 '16 at 23:38

How to pass a file path which is in assets folder to File(String path)?

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