How to convert a PDF page to an image in Android?

Question

All I need to do is take a (locally saved) PDF-document and convert one or all of it\'s pages to image format like JPG or PNG.

I\'ve tr

Answer 1

Finally I found very simple solution to this, Download library from here.

Use below code to get images from PDF:

import android.app.ProgressDialog;
import android.content.Context;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.RectF;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Environment;
import android.provider.MediaStore;

import org.vudroid.core.DecodeServiceBase;
import org.vudroid.core.codec.CodecPage;
import org.vudroid.pdfdroid.codec.PdfContext;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.ArrayList;

/**
 * Created by deepakd on 06-06-2016.
 */
public class PrintUtils extends AsyncTask>
{
    File file;
    Context context;
    ProgressDialog progressDialog;

    public PrintUtils(File file, Context context)
    {

        this.file = file;
        this.context = context;
    }

    @Override
    protected void onPreExecute()
    {
        super.onPreExecute();
        // create and show a progress dialog
        progressDialog = ProgressDialog.show(context, "", "Please wait...");
        progressDialog.show();
    }

    @Override
    protected ArrayList doInBackground(Void... params)
    {
        ArrayList uris = new ArrayList<>();

        DecodeServiceBase decodeService = new DecodeServiceBase(new PdfContext());
        decodeService.setContentResolver(context.getContentResolver());
        // a bit long running
        decodeService.open(Uri.fromFile(file));
        int pageCount = decodeService.getPageCount();
        for (int i = 0; i < pageCount; i++)
        {
            CodecPage page = decodeService.getPage(i);
            RectF rectF = new RectF(0, 0, 1, 1);
            // do a fit center to A4 Size image 2480x3508
            double scaleBy = Math.min(UIUtils.PHOTO_WIDTH_PIXELS / (double) page.getWidth(), //
                    UIUtils.PHOTO_HEIGHT_PIXELS / (double) page.getHeight());
            int with = (int) (page.getWidth() * scaleBy);
            int height = (int) (page.getHeight() * scaleBy);
            // Long running
            Bitmap bitmap = page.renderBitmap(with, height, rectF);
            try
            {
                OutputStream outputStream = FileUtils.getReportOutputStream(System.currentTimeMillis() + ".JPEG");
                // a bit long running
                bitmap.compress(Bitmap.CompressFormat.JPEG, 100, outputStream);
                outputStream.close();
               // uris.add(getImageUri(context, bitmap));
                uris.add(saveImageAndGetURI(bitmap));
            }
            catch (IOException e)
            {
                e.printStackTrace();
            }
        }
        return uris;
    }

    @Override
    protected void onPostExecute(ArrayList uris)
    {
        progressDialog.hide();
        //get all images by uri 
        //ur implementation goes here
    }




    public void shareMultipleFilesToBluetooth(Context context, ArrayList uris)
    {
        try
        {
            Intent sharingIntent = new Intent();
            sharingIntent.setAction(Intent.ACTION_SEND_MULTIPLE);
            sharingIntent.setType("image/*");
           // sharingIntent.setPackage("com.android.bluetooth");
            sharingIntent.putExtra(Intent.EXTRA_STREAM, uris);
            context.startActivity(Intent.createChooser(sharingIntent,"Print PDF using..."));
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
    }





    private Uri saveImageAndGetURI(Bitmap finalBitmap) {
        String root = Environment.getExternalStorageDirectory().toString();
        File myDir = new File(root + "/print_images");
        myDir.mkdirs();
        String fname = "Image-"+ MathUtils.getRandomID() +".jpeg";
        File file = new File (myDir, fname);
        if (file.exists ()) file.delete ();
        try {
            FileOutputStream out = new FileOutputStream(file);
            finalBitmap.compress(Bitmap.CompressFormat.JPEG, 100, out);
            out.flush();
            out.close();

        } catch (Exception e) {
            e.printStackTrace();
        }

        return Uri.parse("file://"+file.getPath());
    }

}

FileUtils.java

package com.airdata.util;

import android.net.Uri;
import android.os.Environment;
import android.support.annotation.NonNull;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.OutputStream;

/**
 * Created by DeepakD on 21-06-2016.
 */
public class FileUtils
{

    @NonNull
    public static OutputStream getReportOutputStream(String fileName) throws FileNotFoundException
{
    // create file
    File pdfFolder = getReportFilePath(fileName);
    // create output stream
    return new FileOutputStream(pdfFolder);
}

    public static Uri getReportUri(String fileName)
    {
        File pdfFolder = getReportFilePath(fileName);
        return Uri.fromFile(pdfFolder);
    }
    public static File getReportFilePath(String fileName)
    {
        /*File file = new File(Environment.getExternalStoragePublicDirectory(
                Environment.DIRECTORY_DOWNLOADS), FileName);*/
        File file = new File(Environment.getExternalStorageDirectory() + "/AirPlanner/Reports");
        //Create report directory if does not exists
        if (!file.exists())
        {
            //noinspection ResultOfMethodCallIgnored
            file.mkdirs();
        }
        file = new File(Environment.getExternalStorageDirectory() + "/AirPlanner/Reports/" + fileName);
        return file;
    }
}

You can view converted images in Gallery or in SD card. Please let me know if you need any help.