Load PDF files

Using this code

activity_main.xml

<RelativeLayout 
 xmlns:android="http://schemas.android.com/apk/res/android"

 xmlns:tools="http://schemas.android.com/tools"

 android:layout_width="match_parent"

 android:layout_height="match_parent"

 android:background="#9EBA89" >

<ListView

 android:id="@+id/listView1"

 android:layout_width="match_parent"

 android:layout_height="wrap_content" >

</ListView>

</RelativeLayout>

MainActivity.java

package com.example.readpdfnames;

import java.io.File;

import java.util.ArrayList;

import android.app.Activity;

import android.content.Intent;

import android.net.Uri;

import android.os.Bundle;

import android.os.Environment;

import android.util.Log;

import android.view.View;

import android.widget.AdapterView;

import android.widget.AdapterView.OnItemClickListener;

import android.widget.ArrayAdapter;

import android.widget.ListView;

public class MainActivity extends Activity {

File path;

ListView list;

static ArrayList<String> pdf_paths=new ArrayList<String>();

static ArrayList<String> pdf_names=new ArrayList<String>();

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

list=(ListView)findViewById(R.id.listView1);

pdf_paths.clear();

pdf_names.clear();

//Access External storage 

path = new File(Environment.getExternalStorageDirectory() + "");

searchFolderRecursive1(path);

ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,

android.R.layout.simple_list_item_1, android.R.id.text1, pdf_names);

Log.e("aaaaaaaaaa", ""+pdf_names);

list.setAdapter(adapter);

list.setOnItemClickListener(new OnItemClickListener() {

@Override

public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,

long arg3) {

// TODO Auto-generated method stub

String path = pdf_paths.get(arg2);

File file = new File(path);

Intent intent = new Intent(Intent.ACTION_VIEW);

intent.setDataAndType(Uri.fromFile(file), "application/pdf");

intent.setFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);

startActivity(intent);

}

});

}

private static void searchFolderRecursive1(File folder)

{

 if (folder != null)

 {

  if (folder.listFiles() != null)

  {

   for (File file : folder.listFiles())

   {

    if (file.isFile())

    {
     //.pdf files 

     if(file.getName().contains(".pdf"))

      {

       Log.e("ooooooooooooo", "path__="+file.getName());

       file.getPath();

       pdf_names.add(file.getName());

       pdf_paths.add(file.getPath());

       Log.e("pdf_paths", ""+pdf_names);

      }

     } 
     else 
     {

      searchFolderRecursive1(file);

     }

    }

   }

  }

 }

}