Pdf file is not viewing in android app

Question

Anyone can help in this code, the pdf file is not loading in app and just showing blank white screen, Logcat showing FileNotFoundExeeption: /storage/sdcard/raw/ourpdf.pdf.

i am trying to make an app that will show information while i click buttons and every button will be active for specific pdf file reading. Any specific help please.

Thanks for help

part1

package com.code.androidpdf;

public class MainActivity extends Activity {

//Globals:
private WebView wv;
private int ViewSize = 0;

//OnCreate Method:
@Override
protected void onCreate(Bundle savedInstanceState)

{
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    //Settings
    PDFImage.sShowImages = true; // show images
    PDFPaint.s_doAntiAlias = true; // make text smooth
    HardReference.sKeepCaches = true; // save images in cache

    //Setup above
    wv = (WebView)findViewById(R.id.webView1);
    wv.getSettings().setBuiltInZoomControls(true);//show zoom buttons
    wv.getSettings().setSupportZoom(true);//allow zoom
    //get the width of the webview
    wv.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener()
    {
        @Override
        public void onGlobalLayout()
        {
            ViewSize = wv.getWidth();
            wv.getViewTreeObserver().removeGlobalOnLayoutListener(this);
        }
    });

    pdfLoadImages();//load images

}

private void pdfLoadImages() {
    try
    {
        // run async
        new AsyncTask<Void, Void, Void>()
                {
                    // create and show a progress dialog
                    ProgressDialog progressDialog = ProgressDialog.show(MainActivity.this, "", "Opening...");

                    @Override
                    protected void onPostExecute(Void result)
                    {
                        //after async close progress dialog
                        progressDialog.dismiss();
                    }

                    @Override
                    protected Void doInBackground(Void... params)
                    {
                        try
                        {
                            // select a document and get bytes
    File file = new File(Environment.getExternalStorageDirectory().getPath()+"/randompdf.pdf");
                            RandomAccessFile raf = new RandomAccessFile(file, "r");
                            FileChannel channel = raf.getChannel();
                            net.sf.andpdf.nio.ByteBuffer bb = null ;
                            raf.close();
                            // create a pdf doc
                            PDFFile pdf = new PDFFile(bb);
                            //Get the first page from the pdf doc
                            PDFPage PDFpage = pdf.getPage(1, true);
                            //create a scaling value according to the WebView Width
                            final float scale = ViewSize / PDFpage.getWidth() * 0.95f;
                            //convert the page into a bitmap with a scaling value
                            Bitmap page = PDFpage.getImage((int)(PDFpage.getWidth() * scale), (int)(PDFpage.getHeight() * scale), null, true, true);
                            //save the bitmap to a byte array
                            ByteArrayOutputStream stream = new ByteArrayOutputStream();
                            page.compress(Bitmap.CompressFormat.PNG, 100, stream);
                            stream.close();
                            byte[] byteArray = stream.toByteArray();
                            //convert the byte array to a base64 string
                            String base64 = Base64.encodeToString(byteArray, Base64.DEFAULT);
                            //create the html + add the first image to the html
                            String html = "<!DOCTYPE html><html><body bgcolor=\"#7f7f7f\"><img src=\"data:image/png;base64,"+base64+"\" hspace=10 vspace=10><br>";
                            //loop through the rest of the pages and repeat the above
                            for(int i = 2; i <= pdf.getNumPages(); i++)
                            {
                                PDFpage = pdf.getPage(i, true);
                                page = PDFpage.getImage((int)(PDFpage.getWidth() * scale), (int)(PDFpage.getHeight() * scale), null, true, true);
                                stream = new ByteArrayOutputStream();
                                page.compress(Bitmap.CompressFormat.PNG, 100, stream);
                                stream.close();
                                byteArray = stream.toByteArray();
                                base64 = Base64.encodeToString(byteArray, Base64.DEFAULT);
                                html += "<img src=\"data:image/png;base64,"+base64+"\" hspace=10 vspace=10><br>";
                            }
                            html += "</body></html>";
                            //load the html in the webview
                            wv.loadDataWithBaseURL("", html, "text/html","UTF-8", "");
                    }
                    catch (Exception e)
                    {
                        Log.d("CounterA", e.toString());
                    }
                        return null;
                    }
                }.execute();
                System.gc();// run GC
    }
    catch (Exception e)
    {
        Log.d("error", e.toString());
    }
}

}

Where is the PDF file stored? – Shlomo Zalman Heigh Jul 23 '14 at 15:46 — Shlomo Zalman Heigh, Jul 23 '14 at 15:46
the PDF file saved in raw folder – Nayeem Hyder Riddhi Jul 23 '14 at 15:48 — Nayeem Hyder Riddhi, Jul 23 '14 at 15:48
the pdf file saved in res> raw folder – Nayeem Hyder Riddhi Jul 23 '14 at 15:49 — Nayeem Hyder Riddhi, Jul 23 '14 at 15:49

score 0 · Answer 1 · answered Jul 23 '14 at 15:57

0

You can get an InputStream for the file using

getResources().openRawResource(R.raw.ourpdf)

Docs: http://developer.android.com/reference/android/content/res/Resources.html#openRawResource(int)

answered Jul 23 '14 at 15:57

Shlomo Zalman Heigh

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can you give me easier way to view pdf , will be very thankful – Nayeem Hyder Riddhi Jul 23 '14 at 16:16
there is a github project based on MuPDF. by a user called joniks. see that. It is the easiest to use that comes to my mind – harveyslash Jul 24 '14 at 16:55

score 0 · Accepted Answer · edited May 23 '17 at 10:27

0

It is (sadly) not possible to view a PDF that is stored locally in your devices. Android L has introduced the feature. So, to display a PDF , you have two options:

See this answer for using webview How to open local pdf file in webview in android? (note that this requires an internet connection)
Use a third party pdf Viewer.

You can also send an intent for other apps to handle your pdf.

edited May 23 '17 at 10:27

Community

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answered Jul 23 '14 at 16:01

harveyslash

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i am using https://github.com/jblough/Android-Pdf-Viewer-Library this, but not working, can you give me any easier way, thanks – Nayeem Hyder Riddhi Jul 23 '14 at 16:11
ask another question for that, i will answer.Accept this answer – harveyslash Jul 23 '14 at 16:35
Can u give me ways or tips how can i easily load pdf files by clicking buttons, i am a junior app developer, will be very thankful to you for your suggesion – Nayeem Hyder Riddhi Jul 23 '14 at 22:14
That is exactly what my answer is about – harveyslash Jul 24 '14 at 03:42

Pdf file is not viewing in android app

2 Answers2