< Android samples

ContentReplacerTest - Java (Android)

This sample shows how to use pdftron.PDF.ContentReplacer to search and replace text strings and images in existing PDF (e.g. business cards and other PDF templates). Unlike PDF forms, the ContentReplacer works on actual PDF content and is not limited to static rectangular annotation regions.

//---------------------------------------------------------------------------------------
// Copyright (c) 2001-2018 by PDFTron Systems Inc. All Rights Reserved.
// Consult legal.txt regarding legal and license information.
//---------------------------------------------------------------------------------------

package com.pdftron.android.pdfnetsdksamples.samples;

import com.pdftron.android.pdfnetsdksamples.OutputListener;
import com.pdftron.android.pdfnetsdksamples.PDFNetSample;
import com.pdftron.android.pdfnetsdksamples.R;
import com.pdftron.android.pdfnetsdksamples.util.Utils;
import com.pdftron.pdf.ContentReplacer;
import com.pdftron.pdf.Image;
import com.pdftron.pdf.PDFDoc;
import com.pdftron.pdf.Page;
import com.pdftron.pdf.Rect;
import com.pdftron.sdf.SDFDoc;

import java.io.File;
import java.util.ArrayList;

public class ContentReplacerTest extends PDFNetSample {

	private static OutputListener mOutputListener;

	private static ArrayList<String> mFileList = new ArrayList<>();

    public ContentReplacerTest() {
        setTitle(R.string.sample_contentreplacer_title);
        setDescription(R.string.sample_contentreplacer_description);
    }

	@Override
	public void run(OutputListener outputListener) {
		super.run(outputListener);
		mOutputListener = outputListener;
		mFileList.clear();
		printHeader(outputListener);

        // The first step in every application using PDFNet is to initialize the
        // library and set the path to common PDF resources. The library is usually
        // initialized only once, but calling Initialize() multiple times is also fine.

        //--------------------------------------------------------------------------------
        // Example 1) Update a business card template with personalized info

        try {
            mOutputListener.println("Opening the input file...");

            PDFDoc doc = new PDFDoc(Utils.getAssetTempFile(INPUT_PATH + "BusinessCardTemplate.pdf").getAbsolutePath());
            doc.initSecurityHandler();

            ContentReplacer replacer = new ContentReplacer();
            Page page = doc.getPage(1);
            // first, replace the image on the first page
            Image img = Image.create(doc, Utils.getAssetTempFile(INPUT_PATH + "peppers.jpg").getAbsolutePath());
            replacer.addImage(page.getMediaBox(), img.getSDFObj());
            // next, replace the text place holders on the second page
            replacer.addString("NAME", "John Smith");
            replacer.addString("QUALIFICATIONS", "Philosophy Doctor");
            replacer.addString("JOB_TITLE", "Software Developer");
            replacer.addString("ADDRESS_LINE1", "#100 123 Software Rd");
            replacer.addString("ADDRESS_LINE2", "Vancouver, BC");
            replacer.addString("PHONE_OFFICE", "604-730-8989");
            replacer.addString("PHONE_MOBILE", "604-765-4321");
            replacer.addString("EMAIL", "info@pdftron.com");
            replacer.addString("WEBSITE_URL", "http://www.pdftron.com");
            // finally, apply
            replacer.process(page);

            doc.save(Utils.createExternalFile("BusinessCard.pdf").getAbsolutePath(), SDFDoc.SaveMode.REMOVE_UNUSED, null);
            mFileList.add(new File(doc.getFileName()).getName());
            doc.close();
            mOutputListener.println("Done. Result saved in BusinessCard.pdf");
        } catch (Exception e) {
            e.printStackTrace();
            return;
        }

        //--------------------------------------------------------------------------------
        // Example 2) Replace text in a region with new text

        try {
            PDFDoc doc = new PDFDoc(Utils.getAssetTempFile(INPUT_PATH + "newsletter.pdf").getAbsolutePath());
            doc.initSecurityHandler();

            ContentReplacer replacer = new ContentReplacer();
            Page page = doc.getPage(1);
            Rect target_region = page.getMediaBox();
            String replacement_text = "hello hello hello hello hello hello hello hello hello hello";
            replacer.addText(target_region, replacement_text);
            replacer.process(page);

            doc.save(Utils.createExternalFile("ContentReplaced.pdf").getAbsolutePath(), SDFDoc.SaveMode.REMOVE_UNUSED, null);
            mFileList.add(new File(doc.getFileName()).getName());
            doc.close();
            mOutputListener.println("Done. Result saved in ContentReplaced.pdf");
        } catch (Exception e) {
            e.printStackTrace();
            return;
        }

        mOutputListener.println("Done.");

		for (String file : mFileList) {
			addToFileList(file);
		}
		printFooter(outputListener);
	}

}