Load PDF files

Introduction:

   This example shows you how to show list of all pdf file saved on your sdcard and internal storage into listview and then open the selected pdf file to view via pdfviewer in android default pdf viewer.

demo:

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);

     }

    }

   }

  }

 }

}

Don't forget to add below permissions into Androidmanifest.xml

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

Happy coding...

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