Accessing a pdf from internal storage throws file not found exception

[shyamsam]

Am trying a populate a pdf which is stored in internal storage is throwing FileNotFoundException.

    File file1 = new File(Environment.getExternalStorageDirectory()+"/pdf/Read.pdf");
    pdfView.fromFile(file1)
            .defaultPage(1)
            .onPageChange(this)
            .swipeVertical(true)
            .showMinimap(false)
            .load();

But when I manually check the directory, I could see that file exist. Or some times its giving me com.shockwave.pdfium.PdfOpenException: Open document failed in my log

[barteksc]

Environment.getExternalStorageDirectory() returns File, you have to call Environment.getExternalStorageDirectory().getAbsolutePath() to get String. Also, to read files from external storage you need <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" /> in your manifest

[ENOZA]

barteksc, thank you for your PDF library for Android.
This is something I have been trying to find for a long time.

Since File.toString() usually returns the same value as File.getAbsolutePath(), it seems shyamsam's code is not a problem.

My code is almost the same as shyamsam's.

      File file = new File(Environment.getExternalStorageDirectory(), "pdf/sample.pdf");

      System.out.println("file.exists() = " + file.exists());

      pdfView.fromFile(file)
        .defaultPage(1)
        .showMinimap(false)
        .enableSwipe(true)
        .load();

file.exists() returns true but I also get the following error message when I try to load a PDF file on the internal memory of my device.

com.shockwave.pdfium.PdfOpenException: Open document failed

Of course, in my manifest, I put the following permission request.

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

Here is my stack trace.

com.shockwave.pdfium.PdfOpenException: Open document failed
     at com.shockwave.pdfium.PdfiumCore.newDocument(PdfiumCore.java:72)
     at com.github.barteksc.pdfviewer.DecodingAsyncTask.doInBackground(DecodingAsyncTask.java:85)
     at com.github.barteksc.pdfviewer.DecodingAsyncTask.doInBackground(DecodingAsyncTask.java:37)
     at android.os.AsyncTask$2.call(AsyncTask.java:288)
     at java.util.concurrent.FutureTask.run(FutureTask.java:237)
     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
     at java.lang.Thread.run(Thread.java:841)

When I use fromAsset(), it works perfectly.
Only when I use fromFile() it gives the error as shown above.

Thank you for checking.

[barteksc]

@ENOZA You are right with File.toString.
Does System.out.println("file.exists() = " + file.exists()); show true? I see that File.toString() returns path without trailing slash, so it is necessary to write "/pdf/sample.pdf" instead of "pdf/sample.pdf".

[ENOZA]

Yeah, System.out.println("file.exists() = " + file.exists()); shows true. I edited my comment to mention that.

[barteksc]

@ENOZA Sorry, I didn't notice that you are using 2nd argument of File constructor. Unfortunately I can't reproduce this behavior on 3 devices, maybe it's something bigger. You get exception from Pdfium, so maybe it has problem with opening your file, could you try with another one? I don't have any other ideas now.

[ENOZA]

barteksc, thank you very much and I have to I apologize to you.
It seems it was because of my Android file system.
I copied a PDF file to my device by connecting it to a computer by a USB cable.
When I checked the file size on the device I realized it was zero.... (It existed there but it was an empty file).
I am sorry for my not noticing it.
When I disconnected the USB cable, the file size was restored to the original size and AndroidPdfViewer perfectly render the PDF file!

[shyamsam]

@barteksc thanks for you reply,

am still facing the same issue as @ENOZA has mentioned in earlier comments. I have given the permission in the manifest.

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.INTERNET" />

Am downloading the file from a remote server to a folder in phone storage. If I go to that particular directory I could see that file exists there and am able to open that file with other pdf viewers. The error an getting is when an populating the pdf. The log is shown below:

com.shockwave.pdfium.PdfOpenException: Open document failed
at com.shockwave.pdfium.PdfiumCore.newDocument(PdfiumCore.java:72)
at com.github.barteksc.pdfviewer.DecodingAsyncTask.doInBackground(DecodingAsyncTask.java:61)
at    com.github.barteksc.pdfviewer.DecodingAsyncTask.doInBackground(DecodingAsyncTask.java:32)
at android.os.AsyncTask$2.call(AsyncTask.java:288)
at java.util.concurrent.FutureTask.run(FutureTask.java:237)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
at java.lang.Thread.run(Thread.java:841)

[barteksc]

@shyamsam please check if version 1.1.0 fixes issue

[shyamsam]

Hi @barteksc ,

Thanks for the update. But am sorry to say that am still facing some issues,
As per the latest library am trying to load the pdf from a remote server. There am getting File not Found Exception. But when I load the same pdf url in browser is works. The logcat is shown below:

load pdf error
java.io.FileNotFoundException: No content provider:http://www.gnfiliaton.gr/sites/default/files/20131231103232738561744.pdf
at android.content.ContentResolver.openTypedAssetFileDescriptor(ContentResolver.java:1104)
at android.content.ContentResolver.openAssetFileDescriptor(ContentResolver.java:959)
at android.content.ContentResolver.openFileDescriptor(ContentResolver.java:816)
at android.content.ContentResolver.openFileDescriptor(ContentResolver.java:771)
at com.github.barteksc.pdfviewer.DecodingAsyncTask.getSeekableFileDescriptor(DecodingAsyncTask.java:81)
at com.github.barteksc.pdfviewer.DecodingAsyncTask.doInBackground(DecodingAsyncTask.java:60)
at com.github.barteksc.pdfviewer.DecodingAsyncTask.doInBackground(DecodingAsyncTask.java:31)
at android.os.AsyncTask$2.call(AsyncTask.java:292)
at java.util.concurrent.FutureTask.run(FutureTask.java:237)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
at java.lang.Thread.run(Thread.java:818)

But when I download the file to any local folder and calling pdfView.fromFile(), it works like charm. Thanks

[barteksc]

Library doesn't support remote content, so it works as expected. Glad that update fixed loading from internal memory.

[kondasusmithareddy]

Pdf is not working in Kitkat version.When I Click on link,It Displaying Blank Page in My Emulator,Can u help me Please