java - Excel file access from internal storage android app -

i want able copy excel file android app res\raw folder client phone's internal storage, , able retrieve data excel file , update excel file in internal storage needed. far have this:

http://developer.android.com/guide/topics/data/data-storage.html#filesinternal --- write files internal storage and

http://www.vogella.com/articles/javaexcel/article.html --- using jexcel retrieve data , edit excel file

i can't seem able link two. how go on implementing app?

thanks

for read , write use apache poi library

to sample example there android through read , write excel sheet

1) creating/reading excel file in android

2) android read write excel file using apache poi

for assets sdcard follow this link or use code.

    package com.paresh.copyfileassetstoassets;      import java.io.fileoutputstream;     import java.io.ioexception;     import java.io.inputstream;     import java.io.outputstream;      import android.app.activity;     import android.content.res.assetmanager;     import android.os.bundle;     import android.os.environment;     import android.util.log;      public class copyfileassetstosdcardactivity extends activity      {         /** called when activity first created. */         @override         public void oncreate(bundle savedinstancestate) {             super.oncreate(savedinstancestate);             setcontentview(r.layout.main);             copyassets();         }          private void copyassets() {             assetmanager assetmanager = getassets();             string[] files = null;             try {                 files = assetmanager.list("files");             } catch (ioexception e) {                 log.e("tag", e.getmessage());             }              for(string filename : files) {                 system.out.println("file name => "+filename);                 inputstream in = null;                 outputstream out = null;                 try {                   in = assetmanager.open("files/"+filename);   // if files resides inside "files" directory                   out = new fileoutputstream(environment.getexternalstoragedirectory().tostring() +"/" + filename);                   copyfile(in, out);                   in.close();                   in = null;                   out.flush();                   out.close();                   out = null;                 } catch(exception e) {                     log.e("tag", e.getmessage());                 }             }         }         private void copyfile(inputstream in, outputstream out) throws ioexception {             byte[] buffer = new byte[1024];             int read;             while((read = in.read(buffer)) != -1){               out.write(buffer, 0, read);             }         }     }