Write PDF - Android Studio - Java

Write PDF using EditText:

1) We will use iText PDF Library to create pdf 

2) We will input text Using EditText 

3) Button to save text as PDF file 

4) It will require WRITE_EXTERNAL_STORAGE permission to save pdf file, 

5) We'll handle runtime permission too

>>Watch For Kotlin

Library Link: https://developers.itextpdf.com/itextg-android

VIDEO:

Step 1: Create a new project OR Open your project

Step 2: Add following library in build.gradle(Module:app)

dependencies { compile 'com.itextpdf:itextg:5.5.10' }

Step 3: Add WRITE_EXTERNAL_STORAGE permission in AndroidManifest

Step 4: Code

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.blogspot.atifsoftwares.writepdf_java">

    <!--add permission-->
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

build.gradle(Module:app)

apply plugin: 'com.android.application'

android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.blogspot.atifsoftwares.writepdf_java"
        minSdkVersion 16
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:28.0.0'
    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'

    //write pdf library
    implementation 'com.itextpdf:itextg:5.5.10'
}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
    android:orientation="vertical"
    tools:context=".MainActivity"
    android:padding="5dp">

    <!--EditText: Input text to be saved as pdf file-->
    <EditText
        android:id="@+id/textEt"
        android:hint="Enter text..."
        android:inputType="text|textMultiLine"
        android:background="@drawable/bg_edittext"
        android:padding="5dp"
        android:minHeight="200dp"
        android:gravity="start"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

    <!--Button:   Saves inputted data as pdf file-->
    <Button
        android:id="@+id/saveBtn"
        android:text="Save PDF"
        android:drawableLeft="@drawable/pdf"
        android:gravity="center"
        android:drawablePadding="5dp"
        style="@style/Base.Widget.AppCompat.Button.Colored"
        android:layout_gravity="end"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

</LinearLayout>

MainActivity.java

package com.blogspot.atifsoftwares.writepdf_java;

import android.Manifest;
import android.content.pm.PackageManager;
import android.os.Build;
import android.os.Environment;
import android.support.annotation.NonNull;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import com.itextpdf.text.Document;
import com.itextpdf.text.Paragraph;
import com.itextpdf.text.pdf.PdfWriter;

import java.io.FileOutputStream;
import java.text.SimpleDateFormat;
import java.util.Locale;

public class MainActivity extends AppCompatActivity {

    private static final int STORAGE_CODE = 1000;
    //declaring views
    EditText mTextEt;
    Button mSaveBtn;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        //initializing views (activity_main.xml)
        mTextEt = findViewById(R.id.textEt);
        mSaveBtn = findViewById(R.id.saveBtn);

        //handle button click
        mSaveBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //we need to handle runtime permission for devices with marshmallow and above
                if (Build.VERSION.SDK_INT > Build.VERSION_CODES.M){
                    //system OS >= Marshmallow(6.0), check if permission is enabled or not
                    if (checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) ==
                            PackageManager.PERMISSION_DENIED){
                        //permission was not granted, request it
                        String[] permissions = {Manifest.permission.WRITE_EXTERNAL_STORAGE};
                        requestPermissions(permissions, STORAGE_CODE);
                    }
                    else {
                        //permission already granted, call save pdf method
                        savePdf();
                    }
                }
                else {
                    //system OS < Marshmallow, call save pdf method
                    savePdf();
                }
            }
        });

    }

    private void savePdf() {
        //create object of Document class
        Document mDoc = new Document();
        //pdf file name
        String mFileName = new SimpleDateFormat("yyyyMMdd_HHmmss",
                Locale.getDefault()).format(System.currentTimeMillis());
        //pdf file path
        String mFilePath = Environment.getExternalStorageDirectory() + "/" + mFileName + ".pdf";

        try {
            //create instance of PdfWriter class
            PdfWriter.getInstance(mDoc, new FileOutputStream(mFilePath));
            //open the document for writing
            mDoc.open();
            //get text from EditText i.e. mTextEt
            String mText = mTextEt.getText().toString();

            //add author of the document (optional)
            mDoc.addAuthor("Atif Pervaiz");

            //add paragraph to the document
            mDoc.add(new Paragraph(mText));

            //close the document
            mDoc.close();
            //show message that file is saved, it will show file name and file path too
            Toast.makeText(this, mFileName +".pdf\nis saved to\n"+ mFilePath, Toast.LENGTH_SHORT).show();
        }
        catch (Exception e){
            //if any thing goes wrong causing exception, get and show exception message
            Toast.makeText(this, e.getMessage(), Toast.LENGTH_SHORT).show();
        }
    }


    //handle permission result
    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        switch (requestCode){
            case STORAGE_CODE:{
                if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED){
                    //permission was granted from popup, call savepdf method
                    savePdf();
                }
                else {
                    //permission was denied from popup, show error message
                    Toast.makeText(this, "Permission denied...!", Toast.LENGTH_SHORT).show();
                }
            }
        }
    }
}
/*Write PDF using EditText (Description):
      1) We will use iText PDF Library to create pdf
      2) We will input text Using EditText
      3) Button to save text as PDF file
      4) It will require WRITE_EXTERNAL_STORAGE permission to save pdf file,
      5) We'll handle runtime permission too*/
//Library link is available in description of the video...

Step 5: Run Project

Output

Write PDF - Android Studio - Java