This tutorial will help you to generate a PDF file in Android. Follow below steps to generate PDF file.

Step 1 :- First download .jar files from following URL and put it into your application's libs folder.

Download URL:- https://www.dropbox.com/s/ir76ssy5b3ins22/itextpdf-5.3.3.jar?dl=0

Step 2 :- Open application build.gradle file and add this itexpdf-5.3.3.jar file as dependency library in it.

dependencies {

 compile files('libs/itextpdf-5.3.3.jar') 

} 

Step 3 :- Now write a code to generate a PDF file, open you MainActivity.java class and add following code in activity onCreate() method.

// Destination Folder and File name
String FILE = Environment.getExternalStorageDirectory().toString()
+"/PDF/"+"EvonTech.pdf";


// Add this permission into Manifest.xml to write PDF file in device external storage
//  <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

// Create New Blank Document
 Document document = new Document(PageSize.A4);

// Create Directory in External Storage

String root = Environment.getExternalStorageDirectory().toString();
File myDir = new File(root + "/PDF");
myDir.mkdirs();    

// Create Pdf Writer for Writting into New Created Document
PdfWriter.getInstance(document, new FileOutputStream(FILE));

// Open Document for Writting into document
document.open();    

// User Define Method
addMetaData(document);    
addTitlePage(document);

// Close Document after writting all content
document.close();

Step 4 :- We will create a new method addDocumentProperties(Document document), in this method, we will define document properties such as file title, subject, keywords etc.

// Set PDF document Properties
public void addDocumentProperties(Document document){

document.addTitle("EvonTechnology");
document.addSubject("Details");
document.addKeywords("Android development, IOS development, Web development");
document.addAuthor("Evon");
document.addCreator("Tech");

}

Step 5 :- We will create another method called addTitlePage(Document document). In this method, we will define document font style, add some tables to show data vertically and will add a new paragraph .
 

public void addTitlePage(Document document) throws DocumentException {
        // Font Style for Document
        Font catFont = new Font(Font.FontFamily.TIMES_ROMAN, 18, Font.BOLD);
        Font titleFont = new Font(Font.FontFamily.TIMES_ROMAN, 22, Font.BOLD
                | Font.UNDERLINE, BaseColor.GRAY);
        Font smallBold = new Font(Font.FontFamily.TIMES_ROMAN, 12, Font.BOLD);
        Font normal = new Font(Font.FontFamily.TIMES_ROMAN, 12, Font.NORMAL);

        // Start New Paragraph
        Paragraph prHead = new Paragraph();
        
        // Set Font in this Paragraph
        prHead.setFont(titleFont);

        // Add item into Paragraph
        prHead.add("EvonTechnology\n");

        // Create Table into Document with 1 Row
        PdfPTable myTable = new PdfPTable(1);

        // 100.0f mean width of table is same as Document size
        myTable.setWidthPercentage(100.0f);

        // Create New Cell into Table
        PdfPCell myCell = new PdfPCell(new Paragraph(""));
        myCell.setBorder(Rectangle.BOTTOM);

        // Add Cell into Table
        myTable.addCell(myCell);

        prHead.setFont(catFont);
        prHead.add("\nInformation Technology\n\n");
        prHead.setAlignment(Element.ALIGN_CENTER);

        // Add all above details into Document
        document.add(prHead);
        document.add(myTable);

        document.add(myTable);

        // Now Start another New Paragraph
        Paragraph prPersinalInfo = new Paragraph();
        prPersinalInfo.setFont(smallBold);
        prPersinalInfo.add("India\n\n");
        prPersinalInfo.add("Uttrakhand\n\n");
        prPersinalInfo.add("City: Dehradun. State: UK\n\n");
        prPersinalInfo.add("Country: India, Zip Code: 480001\n\n");
        prPersinalInfo
                .add("Mobile: 9999999999 Fax: 1111111 Email: test123@gmail.com \n\n");

        prPersinalInfo.setAlignment(Element.ALIGN_CENTER);

        document.add(prPersinalInfo);
        document.add(myTable);

        document.add(myTable);

        Paragraph prProfile = new Paragraph();
        prProfile.setFont(smallBold);
        prProfile.add("\n \n Profile : \n ");
        prProfile.setFont(normal);
        prProfile.add("\n This is a pure leading IT company.");

        prProfile.setFont(smallBold);
        document.add(prProfile);

        // Create new Page in PDF
        document.newPage();
    }