Java tutorial
package casariego.jorge.createpdf; import android.Manifest; import android.app.Activity; import android.content.pm.PackageManager; import android.os.Environment; import android.support.v4.app.ActivityCompat; import android.support.v4.content.ContextCompat; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.util.Log; import android.view.View; import android.widget.EditText; import android.widget.Toast; 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; import java.io.File; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.util.Date; public class Pdf1Activity extends AppCompatActivity { 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); // Storage Permissions private static final int REQUEST_EXTERNAL_STORAGE = 1; private static String[] PERMISSIONS_STORAGE = { Manifest.permission.READ_EXTERNAL_STORAGE, Manifest.permission.WRITE_EXTERNAL_STORAGE }; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_pdf1); verifyStoragePermissions(this); } /** * Checks if the app has permission to write to device storage * * If the app does not has permission then the user will be prompted to grant permissions * * @param activity */ public static void verifyStoragePermissions(Activity activity) { // Check if we have write permission if (ContextCompat.checkSelfPermission(activity, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) { // Should we show an explanation? if (ActivityCompat.shouldShowRequestPermissionRationale(activity, Manifest.permission.WRITE_EXTERNAL_STORAGE)) { // Show an expanation to the user *asynchronously* -- don't block // this thread waiting for the user's response! After the user // sees the explanation, try again to request the permission. } else { // No explanation needed, we can request the permission. ActivityCompat.requestPermissions(activity, PERMISSIONS_STORAGE, REQUEST_EXTERNAL_STORAGE); } } else { createPDF(); } } @Override public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) { switch (requestCode) { case REQUEST_EXTERNAL_STORAGE: { // If request is cancelled, the result arrays are empty. if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) { // permission was granted, yay! Do the // contacts-related task you need to do. createPDF(); } else { // permission denied, boo! Disable the // functionality that depends on this permission. Toast.makeText(Pdf1Activity.this, "No podemos escribir sin tener permiso", Toast.LENGTH_SHORT) .show(); } return; } // other 'case' lines to check for other // permissions this app might request } } public static void createPDF() { //create document object Document document = new Document(); //output file path String outpath = Environment.getExternalStorageDirectory() + "/theBestPdf/PDF1.pdf"; try { PdfWriter.getInstance(document, new FileOutputStream(outpath)); document.open(); addMetaData(document); addTitlePage(document); addContent(document); document.close(); } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (DocumentException e) { // TODO Auto-generated catch block 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(" ")); } } }