How to read and display data from Excel file into your android application

Have gone through this example and have Apache POI..i just want to display data of my excel sheet into android app.so i implemented only readExcelFile method..but uts not working


Here is my code:

SearchActivity.java

package com.medicine.meditracker;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Iterator;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFCellStyle;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.util.HSSFColor;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellStyle;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.os.Environment;
import android.support.v7.app.ActionBarActivity;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;


public class SearchActivity extends ActionBarActivity implements OnClickListener {

Button readExcelButton;
static String TAG = "ExelLog";

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_search);
readExcelButton = (Button) findViewById(R.id.readExcel);
readExcelButton.setOnClickListener(this);
}

@Override
public void onClick(View v) {
switch (v.getId())
{
case R.id.readExcel:
readExcelFile(this,"medicine.xlsx");
break;
}
}
private static void readExcelFile(Context context, String filename) {

if (!isExternalStorageAvailable() || isExternalStorageReadOnly())
{
Log.e(TAG, "Storage not available or read only");
return;
}

try{
// Creating Input Stream
File file = new File(context.getExternalFilesDir(null), "medicine.xlsx");
FileInputStream myInput = new FileInputStream(file);

// Create a POIFSFileSystem object
POIFSFileSystem myFileSystem = new POIFSFileSystem(myInput);

// Create a workbook using the File System
HSSFWorkbook myWorkBook = new HSSFWorkbook(myFileSystem);

// Get the first sheet from workbook
HSSFSheet mySheet = myWorkBook.getSheetAt(0);

/** We now need something to iterate through the cells.**/
Iterator rowIter = mySheet.rowIterator();

while(rowIter.hasNext()){
HSSFRow myRow = (HSSFRow) rowIter.next();
Iterator cellIter = myRow.cellIterator();
while(cellIter.hasNext()){
HSSFCell myCell = (HSSFCell) cellIter.next();
Log.d(TAG, "Cell Value: " + myCell.toString());
Toast.makeText(context, "cell Value: " + myCell.toString(), Toast.LENGTH_SHORT).show();
}
}
}catch (Exception e){e.printStackTrace(); }

return;
}

public static boolean isExternalStorageReadOnly() {
String extStorageState = Environment.getExternalStorageState();
if (Environment.MEDIA_MOUNTED_READ_ONLY.equals(extStorageState)) {
return true;
}
return false;
}

public static boolean isExternalStorageAvailable() {
String extStorageState = Environment.getExternalStorageState();
if (Environment.MEDIA_MOU