Create Pdf File In Android Programmatically

Video Demo:

Now we can use PdfDocument to generate the pdf file. But PdfDocument only works in 21 or above api level. In this tutorial I have created the pdf file with image and text. Download source code from here.

AndroidManifest.xml:

    package="com.deepshikha.generatepdf">

   

   

   

        android:allowBackup="true"

        android:icon="@mipmap/ic_launcher"

        android:label="@string/app_name"

        android:supportsRtl="true"

        android:theme="@style/AppTheme">

       

           

               

               

           

       

       

   

activity_main.xml:

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:background="#ffffff"

    android:orientation="vertical">

   

MainActivity.java:

package com.deepshikha.generatepdf;

import android.Manifest;

import android.app.ProgressDialog;

import android.content.Context;

import android.content.Intent;

import android.content.pm.PackageManager;

import android.content.res.Resources;

import android.graphics.Bitmap;

import android.graphics.BitmapFactory;

import android.graphics.Canvas;

import android.graphics.Color;

import android.graphics.Paint;

import android.graphics.Rect;

import android.graphics.pdf.PdfDocument;

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.DisplayMetrics;

import android.util.Log;

import android.view.Display;

import android.view.View;

import android.view.WindowManager;

import android.widget.Button;

import android.widget.ImageView;

import android.widget.LinearLayout;

import android.widget.ProgressBar;

import android.widget.TextView;

import android.widget.Toast;

import java.io.File;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

public class MainActivity extends AppCompatActivity implements View.OnClickListener{

    Button btn_generate;

    TextView tv_link;

    ImageView iv_image;

    LinearLayout ll_pdflayout;

    public static int REQUEST_PERMISSIONS = 1;

    boolean boolean_permission;

    boolean boolean_save;

    Bitmap bitmap;

    ProgressDialog progressDialog;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        init();

        fn_permission();

        listener();

    }

    private void init(){

        btn_generate = (Button)findViewById(R.id.btn_generate);

        tv_link = (TextView)findViewById(R.id.tv_link);

        iv_image = (ImageView) findViewById(R.id.iv_image);

        ll_pdflayout = (LinearLayout) findViewById(R.id.ll_pdflayout);

    }

    private void listener(){

        btn_generate.setOnClickListener(this);

    }

    @Override

    public void onClick(View view) {

        switch (view.getId()) {

            case R.id.btn_generate:

                if (boolean_save) {

                    Intent intent = new Intent(getApplicationContext(), PDFViewActivity.class);

                    startActivity(intent);

                } else {

                    if (boolean_permission) {

                        progressDialog = new ProgressDialog(MainActivity.this);

                        progressDialog.setMessage("Please wait");

                         bitmap = loadBitmapFromView(ll_pdflayout, ll_pdflayout.getWidth(), ll_pdflayout.getHeight());

                        createPdf();

//                        saveBitmap(bitmap);

                    } else {

                    }

                    createPdf();

                    break;

                }

        }

    }

    private void createPdf(){

        WindowManager wm = (WindowManager) getSystemService(Context.WINDOW_SERVICE);

        Display display = wm.getDefaultDisplay();

        DisplayMetrics displaymetrics = new DisplayMetrics();

        this.getWindowManager().getDefaultDisplay().getMetrics(displaymetrics);

        float hight = displaymetrics.heightPixels ;

        float width = displaymetrics.widthPixels ;

        int convertHighet = (int) hight, convertWidth = (int) width;

//        Resources mResources = getResources();

//        Bitmap bitmap = BitmapFactory.decodeResource(mResources, R.drawable.screenshot);

        PdfDocument document = new PdfDocument();

        PdfDocument.PageInfo pageInfo = new PdfDocument.PageInfo.Builder(convertWidth, convertHighet, 1).create();

        PdfDocument.Page page = document.startPage(pageInfo);

        Canvas canvas = page.getCanvas();

        Paint paint = new Paint();

        canvas.drawPaint(paint);

        bitmap = Bitmap.createScaledBitmap(bitmap, convertWidth, convertHighet, true);

        paint.setColor(Color.BLUE);

        canvas.drawBitmap(bitmap, 0, 0 , null);

        document.finishPage(page);

        // write the document content

        String targetPdf = "/sdcard/test.pdf";

        File filePath = new File(targetPdf);

        try {

            document.writeTo(new FileOutputStream(filePath));

            btn_generate.setText("Check PDF");

            boolean_save=true;

        } catch (IOException e) {

            e.printStackTrace();

            Toast.makeText(this, "Something wrong: " + e.toString(), Toast.LENGTH_LONG).show();

        }

        // close the document

        document.close();

    }

    public static Bitmap loadBitmapFromView(View v, int width, int height) {

        Bitmap b = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);

        Canvas c = new Canvas(b);

        v.draw(c);

        return b;

    }

    private void fn_permission() {

        if ((ContextCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED)||

                (ContextCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED)) {

            if ((ActivityCompat.shouldShowRequestPermissionRationale(MainActivity.this, android.Manifest.permission.READ_EXTERNAL_STORAGE))) {

            } else {

                ActivityCompat.requestPermissions(MainActivity.this, new String[]{android.Manifest.permission.READ_EXTERNAL_STORAGE},

                        REQUEST_PERMISSIONS);

            }

            if ((ActivityCompat.shouldShowRequestPermissionRationale(MainActivity.this, Manifest.permission.WRITE_EXTERNAL_STORAGE))) {

            } else {

                ActivityCompat.requestPermissions(MainActivity.this, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE},

                        REQUEST_PERMISSIONS);

            }

        } else {

            boolean_permission = true;

        }

    }

    @Override

    public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {

        super.onRequestPermissionsResult(requestCode, permissions, grantResults);

        if (requestCode == REQUEST_PERMISSIONS) {

            if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {

                boolean_permission = true;

            } else {

                Toast.makeText(getApplicationContext(), "Please allow the permission", Toast.LENGTH_LONG).show();

            }

        }

    }

}

activity_pdfview.xml:

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical">

   

        android:id="@+id/pdfview"

        android:layout_width="match_parent"

        android:layout_height="match_parent"

        android:layout_margin="10dp">

   

PDFViewActivity.java:

package com.deepshikha.generatepdf;

import android.os.Bundle;

import android.support.annotation.Nullable;

import android.support.v7.app.AppCompatActivity;

import android.util.Log;

import com.github.barteksc.pdfviewer.PDFView;

import com.github.barteksc.pdfviewer.listener.OnLoadCompleteListener;

import com.github.barteksc.pdfviewer.listener.OnPageChangeListener;

import com.github.barteksc.pdfviewer.scroll.DefaultScrollHandle;

import com.shockwave.pdfium.PdfDocument;

import java.io.File;

import java.util.List;

/**

 * Created by deepshikha on 29/5/17.

 */

public class PDFViewActivity extends AppCompatActivity implements OnPageChangeListener,OnLoadCompleteListener {

    PDFView pdfView;

    Integer pageNumber = 0;

    String pdfFileName;

    String TAG="PDFViewActivity";

    int position=-1;

    @Override

    protected void onCreate(@Nullable Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_pdfview);

        init();

    }

    private void init(){

        pdfView= (PDFView)findViewById(R.id.pdfview);

        position = getIntent().getIntExtra("position",-1);

        displayFromSdcard();

    }

    private void displayFromSdcard() {

        pdfFileName ="/sdcard/test.pdf";

        File file = new File(pdfFileName);

        Log.e("File path",file.getAbsolutePath());

        pdfView.fromFile(file)

                .defaultPage(pageNumber)

                .enableSwipe(true)

                .swipeHorizontal(false)

                .onPageChange(this)

                .enableAnnotationRendering(true)

                .onLoad(this)

                .scrollHandle(new DefaultScrollHandle(this))

                .load();

    }

    @Override

    public void onPageChanged(int page, int pageCount) {

        pageNumber = page;

        setTitle(String.format("%s %s / %s", pdfFileName, page + 1, pageCount));

    }

    @Override

    public void loadComplete(int nbPages) {

        PdfDocument.Meta meta = pdfView.getDocumentMeta();

        printBookmarksTree(pdfView.getTableOfContents(), "-");

    }

    public void printBookmarksTree(List tree, String sep) {

        for (PdfDocument.Bookmark b : tree) {

            Log.e(TAG, String.format("%s %s, p %d", sep, b.getTitle(), b.getPageIdx()));

            if (b.hasChildren()) {

                printBookmarksTree(b.getChildren(), sep + "-");

            }

        }

    }

}