Reading a pdf file

Here we are try to read a pdf file with help of iText . You can download the iText binary from http://sourceforge.net/projects/itext/. 

import java.io.FileOutputStream;
import java.io.IOException;
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Image;
import com.itextpdf.text.pdf.PdfImportedPage;
import com.itextpdf.text.pdf.PdfReader;
import com.itextpdf.text.pdf.PdfWriter;
public class ReadAndUsePdf {
private static String INPUTFILE = "c:/temp/FirstPdf.pdf";
private static String OUTPUTFILE = "c:/temp/ReadPdf.pdf";
public static void main(String[] args) throws DocumentException,
IOException {
Document document = new Document();
PdfWriter writer = PdfWriter.getInstance(document,
new FileOutputStream(OUTPUTFILE));
document.open();
PdfReader reader = new PdfReader(INPUTFILE);
int n = reader.getNumberOfPages();
PdfImportedPage page;
// Go through all pages
for (int i = 1; i <= n; i++) {
// Only page number 2 will be included
if (i == 2) {
page = writer.getImportedPage(reader, i);
Image instance = Image.getInstance(page);
document.add(instance);
}
}
document.close();
}
}

Creating a pdf in Android with help of iText

With help of iText we can create a pdf file. you can download the latest binary from  http://sourceforge.net/projects/itext/.

import java.io.FileOutputStream;
import java.util.Date;

import com.itextpdf.text.Anchor;
import com.itextpdf.text.BadElementException;
import com.itextpdf.text.BaseColor;
import com.itextpdf.text.Chapter;
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Element;
import com.itextpdf.text.Font;
import com.itextpdf.text.List;
import com.itextpdf.text.ListItem;
import com.itextpdf.text.Paragraph;
import com.itextpdf.text.Phrase;
import com.itextpdf.text.Section;
import com.itextpdf.text.pdf.PdfPCell;
import com.itextpdf.text.pdf.PdfPTable;
import com.itextpdf.text.pdf.PdfWriter;


public class FirstPdf {
 private static String FILE = "c:/temp/FirstPdf.pdf";
 private static Font catFont = new Font(Font.FontFamily.TIMES_ROMAN, 18,
   Font.BOLD);
 private static Font redFont = new Font(Font.FontFamily.TIMES_ROMAN, 12,
   Font.NORMAL, BaseColor.RED);
 private static Font subFont = new Font(Font.FontFamily.TIMES_ROMAN, 16,
   Font.BOLD);
 private static Font smallBold = new Font(Font.FontFamily.TIMES_ROMAN, 12,
   Font.BOLD);

 public static void main(String[] args) {
  try {
   Document document = new Document();
   PdfWriter.getInstance(document, new FileOutputStream(FILE));
   document.open();
   addMetaData(document);
   addTitlePage(document);
   addContent(document);
   document.close();
  } catch (Exception e) {
   e.printStackTrace();
  }
 }

 // iText allows to add metadata to the PDF which can be viewed in your Adobe
 // Reader
 // under File -> Properties
 private static void addMetaData(Document document) {
  document.addTitle("My first PDF");
  document.addSubject("Using iText");
  document.addKeywords("Java, PDF, iText");
  document.addAuthor("Lars Vogel");
  document.addCreator("Lars Vogel");
 }

 private static void addTitlePage(Document document)
   throws DocumentException {
  Paragraph preface = new Paragraph();
  // We add one empty line
  addEmptyLine(preface, 1);
  // Lets write a big header
  preface.add(new Paragraph("Title of the document", catFont));

  addEmptyLine(preface, 1);
  // Will create: Report generated by: _name, _date
  preface.add(new Paragraph(
    "Report generated by: " + System.getProperty("user.name") + ", " + new Date(), //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
    smallBold));
  addEmptyLine(preface, 3);
  preface.add(new Paragraph(
    "This document describes something which is very important ",
    smallBold));

  addEmptyLine(preface, 8);

  preface.add(new Paragraph(
    "This document is a preliminary version and not subject to your license agreement or any other agreement with vogella.com ;-).",
    redFont));

  document.add(preface);
  // Start a new page
  document.newPage();
 }

 private static void addContent(Document document) throws DocumentException {
  Anchor anchor = new Anchor("First Chapter", catFont);
  anchor.setName("First Chapter");

  // Second parameter is the number of the chapter
  Chapter catPart = new Chapter(new Paragraph(anchor), 1);

  Paragraph subPara = new Paragraph("Subcategory 1", subFont);
  Section subCatPart = catPart.addSection(subPara);
  subCatPart.add(new Paragraph("Hello"));

  subPara = new Paragraph("Subcategory 2", subFont);
  subCatPart = catPart.addSection(subPara);
  subCatPart.add(new Paragraph("Paragraph 1"));
  subCatPart.add(new Paragraph("Paragraph 2"));
  subCatPart.add(new Paragraph("Paragraph 3"));

  // Add a list
  createList(subCatPart);
  Paragraph paragraph = new Paragraph();
  addEmptyLine(paragraph, 5);
  subCatPart.add(paragraph);

  // Add a table
  createTable(subCatPart);

  // Now add all this to the document
  document.add(catPart);

  // Next section
  anchor = new Anchor("Second Chapter", catFont);
  anchor.setName("Second Chapter");

  // Second parameter is the number of the chapter
  catPart = new Chapter(new Paragraph(anchor), 1);

  subPara = new Paragraph("Subcategory", subFont);
  subCatPart = catPart.addSection(subPara);
  subCatPart.add(new Paragraph("This is a very important message"));

  // Now add all this to the document
  document.add(catPart);

 }

 private static void createTable(Section subCatPart)
   throws BadElementException {
  PdfPTable table = new PdfPTable(3);

  // t.setBorderColor(BaseColor.GRAY);
  // t.setPadding(4);
  // t.setSpacing(4);
  // t.setBorderWidth(1);

  PdfPCell c1 = new PdfPCell(new Phrase("Table Header 1"));
  c1.setHorizontalAlignment(Element.ALIGN_CENTER);
  table.addCell(c1);

  c1 = new PdfPCell(new Phrase("Table Header 2"));
  c1.setHorizontalAlignment(Element.ALIGN_CENTER);
  table.addCell(c1);

  c1 = new PdfPCell(new Phrase("Table Header 3"));
  c1.setHorizontalAlignment(Element.ALIGN_CENTER);
  table.addCell(c1);
  table.setHeaderRows(1);

  table.addCell("1.0");
  table.addCell("1.1");
  table.addCell("1.2");
  table.addCell("2.1");
  table.addCell("2.2");
  table.addCell("2.3");

  subCatPart.add(table);

 }

 private static void createList(Section subCatPart) {
  List list = new List(true, false, 10);
  list.add(new ListItem("First point"));
  list.add(new ListItem("Second point"));
  list.add(new ListItem("Third point"));
  subCatPart.add(list);
 }

 private static void addEmptyLine(Paragraph paragraph, int number) {
  for (int i = 0; i < number; i++) {
   paragraph.add(new Paragraph(" "));
  }
 }
}

Adding LayoutParams

Adding the LayoutParams to the control


LinearLayout.LayoutParams params=new LinearLayout.LayoutParams(
            LayoutParams.FILL_PARENT,
            LayoutParams.WRAP_CONTENT);
    params.leftMargin=22;
params.height=20;
params.width=10;

Creating dynamic controls.

Here is the code for dynamically creating controls in the table layout...
TableLayout tl=(TableLayout)findViewById(R.id.NewsTable);
 for (int i = 0; i < 16; i++)
 {
TableRow tr=new TableRow(this);
TextView TV=new TextView(this);
 TV.setText("Dynamic Button--"+i);
ImageView IV=new ImageView(this);
 Uri imgUri=Uri.parse("android.resource://com.example.hello/"+R.drawable.icon);
IV.setImageURI(imgUri);
 tr.addView(IV);
 tr.addView(TV);
tl.addView(tr);

Get Phone Contact Details

private void getMyPhoneNumber(){
        // Form an array specifying which columns to return.
        try{
       
        String[] projection = new String[] {
                                     People._ID,
                                     People.LABEL,//._COUNT,
                                     People.NAME,
                                     People.NUMBER,
                                     People.PRIMARY_EMAIL_ID
                                  };

        // Get the base URI for the People table in the Contacts content provider.
        Uri contacts =  People.CONTENT_URI;

        // Make the query.
        Cursor managedCursor = managedQuery(contacts,
                                projection, // Which columns to return
                                 null,       // Which rows to return (all rows)
                                 null,       // Selection arguments (none)
                                 // Put the results in ascending order by name
                                 People.NAME + " ASC");
       
        alertbox("Contacts", getColumnData(managedCursor));
        }
        catch(Exception e){
            alertbox("Exception", e.getMessage());
        }
       
    }

 private String getColumnData(Cursor cur){
        String ContactsName="";
        if (cur.moveToFirst()) {

            String name;
            String phoneNumber;
            String email;
            String Label;
            int nameColumn = cur.getColumnIndex(People.NAME);
            int phoneColumn = cur.getColumnIndex(People.NUMBER);
          
            String imagePath;
       
            do {
                // Get the field values
                name = cur.getString(nameColumn);
                phoneNumber = cur.getString(phoneColumn);
                 email =cur.getString(cur.getColumnIndex(People.PRIMARY_EMAIL_ID));
                 Label =cur.getString(cur.getColumnIndex(People.LABEL));
                ContactsName+="name:"+name+" Phoneno:"+phoneNumber+"email:"+email+"label:"+Label;
              
            } while (cur.moveToNext());

        }
        return ContactsName;
    }

Alert box in Android

As as java script we show a alert dailoge box.

Java Code:

    protected void alertbox(String title, String mymessage) 
        { 
        new AlertDialog.Builder(this) 
           .setMessage(mymessage) 
          .setTitle(title) 
           .setCancelable(true) 
           .setNeutralButton(android.R.string.cancel, 
              new DialogInterface.OnClickListener() { 
              public void onClick(DialogInterface dialog, int whichButton){} 
              }) 
           .show(); 
        }

Communication with HttpRequest