How make Text to PDF Converter App with PDF Viewer

In this video tutorial, I have shown how can we make a "Text to PDF Converter App with PDF Viewer using ITEXT and BARTEC libraries.  Watch the youtube video:

The source code for the entire project is given below.

Code snippet for MainActivity.Java

package com.learnandroid.texttopdf;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
import com.itextpdf.text.BadElementException;
import com.itextpdf.text.BaseColor;
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Element;
import com.itextpdf.text.Font;
import com.itextpdf.text.Image;
import com.itextpdf.text.PageSize;
import com.itextpdf.text.Paragraph;
import com.itextpdf.text.Phrase;
import com.itextpdf.text.Rectangle;
import com.itextpdf.text.pdf.BaseFont;
import com.itextpdf.text.pdf.PdfWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Calendar;
import java.util.Date;
public class MainActivity extends AppCompatActivity {
    EditText name, email;
    Button btnPdf, btnView;
    PdfWriter writer;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        name = (EditText) findViewById(R.id.name);
        email  = (EditText) findViewById(R.id.email);
        btnPdf = (Button) findViewById(R.id.btnpdf);
        btnView = (Button) findViewById(R.id.btnview);
        btnPdf.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                String username = name.getText().toString();
                String useremail = email.getText().toString();
                String path = getExternalFilesDir(null).toString()+"/user.pdf";
                File file = new File(path);
                if(!file.exists()) {
                    try {
                        file.createNewFile();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }

               
                Document document = new Document(PageSize.A4);
                try {
                    writer = PdfWriter.getInstance(document, new FileOutputStream(file.getAbsoluteFile()));
                } catch (DocumentException e) {
                    e.printStackTrace();
                } catch (FileNotFoundException e) {
                    e.printStackTrace();
                }

                document.open();


                Font myfont = new Font(Font.FontFamily.HELVETICA, 24, Font.BOLD);
                paragraph.add(new Paragraph("User Name: "+username, myfont));
                paragraph.add(new Paragraph("\n"));
                paragraph.add(new Paragraph("User Email: "+useremail, myfont));
                try {
                    document.add(paragraph);
                } catch (DocumentException e) {
                    e.printStackTrace();
                }
           
                document.close();

                Toast.makeText(MainActivity.this, "PDF Created Successfully", Toast.LENGTH_SHORT).show();
                Intent intent  = new Intent(getApplicationContext(), NewActivity.class);
                startActivity(intent);
            }
        });
    }
}

Code snippet for activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">
    <EditText
        android:id="@+id/name"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="50dp"
        android:hint="Write your name here"
        />
    <EditText
        android:id="@+id/email"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="50dp"
        android:hint="Write your email here"
        android:layout_below="@+id/name"
        />
    <Button
        android:id="@+id/btnpdf"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Convert to PDF"
        android:layout_marginTop="50dp"
        android:layout_below="@+id/email"/>

    <Button
        android:id="@+id/btnview"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="View PDF"
        android:layout_marginTop="50dp"
        android:layout_below="@+id/btnpdf"/>
</RelativeLayout>

Code snippet for NewActivity.Java

package com.learnandroid.texttopdf;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import com.github.barteksc.pdfviewer.PDFView;
import java.io.File;
public class NewActivity extends AppCompatActivity {
    PDFView pdfView;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_new);
        pdfView = (PDFView) findViewById(R.id.view);
        String path = getExternalFilesDir(null).toString()+"/user.pdf";
        File file  = new File(path);
        pdfView.fromFile(file)
                .swipeHorizontal(false)
                .enableDoubletap(true)
                .enableAnnotationRendering(false)
                .defaultPage(0)
                .password(null)
                .scrollHandle(null)
                .load();
    }
}

Code snippet for activity_new.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".NewActivity">
    <com.github.barteksc.pdfviewer.PDFView
        android:id="@+id/view"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>
</RelativeLayout>

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