How to Create PDF Creator App in Android Studio Convert Text into PDF File Tutorials

Full tutorial is given below. Dear Viewer we are working hard to maintain this website. We doesn't want any think from you. Its just a humble request If you thinks that this posts helps you please share this post with your friends.

build.gradle(Module:app)

plugins {
    id 'com.android.application'
}

android {
    compileSdkVersion 30
    buildToolsVersion "30.0.3"

    defaultConfig {
        applicationId "com.usmtip.myapplication"
        minSdkVersion 18
        targetSdkVersion 30
        versionCode 1
        versionName "1.0"

        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
}

dependencies {

    implementation 'androidx.appcompat:appcompat:1.3.1'
    implementation 'com.google.android.material:material:1.4.0'
    implementation 'androidx.constraintlayout:constraintlayout:2.1.0'
    testImplementation 'junit:junit:4.+'
    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'

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

}

AndroidManifest.xml

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


    <!--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/Theme.MyApplication">
        <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>

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<ScrollView 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">


    <LinearLayout
        android:padding="10dp"
        android:orientation="vertical"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

    <!--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/ic_launcher_background"
        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/ic_baseline_save_24"
        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" />
        
        
        <Space
            android:layout_width="match_parent"
            android:layout_height="20dp"/>

    </LinearLayout>

</ScrollView>

MainActivity.java

package com.usmtip.myapplication;


import android.Manifest;
import android.content.pm.PackageManager;
import android.os.Build;
import android.os.Environment;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;

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("usmtip");

            //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) {
        super.onRequestPermissionsResult(requestCode, permissions, 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();
                }
            }
        }
    }
}