Show PDF file in App

Question

I found this two possibilities to show a pdf file.

1. Open a webView with:

   webView.loadUrl(\"https://docs.google.com/gview?embedded=true&url=\"+

Answer 1

Many libraries are available for showing pdfs within your own app.

• Android PDF Viewer
• VuDroid
• APDFViewer
• droidreader
• android-pdf
• mupdf
• android-pdfView

For a working example using android-pdfView, see this blog post. It demonstrates the basic usage of the library to display pdf onto the view with vertical and horizontal swipe.

pdfView = (PDFView) findViewById(R.id.pdfView);
pdfView.fromFile(new File("/storage/sdcard0/Download/pdf.pdf")).defaultPage(1).enableSwipe(true).onPageChange(this).load();

Answer 2

You can show the PDF in your own viewer

Tier are few open source pdf viewers you should look at: http://androiddeveloperspot.blogspot.com/2013/05/android-pdf-reader-open-source-code.html

You can encrypt the pdf and make sure that your viewer only will be able to decrypt it.

Answer 3

Android provides PDF API now with which it is easy to present pdf content inside application.

you can find details here

Below is the sample snippet to render from a pdf file in assets folder.

    private void openRenderer(Context context) throws IOException {
    // In this sample, we read a PDF from the assets directory.
    File file = new File(context.getCacheDir(), FILENAME);
    if (!file.exists()) {
        // Since PdfRenderer cannot handle the compressed asset file directly, we copy it into
        // the cache directory.
        InputStream asset = context.getAssets().open(FILENAME);
        FileOutputStream output = new FileOutputStream(file);
        final byte[] buffer = new byte[1024];
        int size;
        while ((size = asset.read(buffer)) != -1) {
            output.write(buffer, 0, size);
        }
        asset.close();
        output.close();
    }
    mFileDescriptor = ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY);
    // This is the PdfRenderer we use to render the PDF.
    if (mFileDescriptor != null) {
        mPdfRenderer = new PdfRenderer(mFileDescriptor);
    }
}

update: This snippet is from google developers provided samples.