Input stream to pdf on Android

Question

I am trying to save an input stream from a HTTPSUrlConnection to a PDF file stored on the device. It looks like it goes smoothly. However, when I loads the document in PDFView, I receive the following error: PDF is corrupted.

private void saveAsPDF(DataInputStream inputStream, final String filename)
{
    try {

        FileOutputStream fileOutputStream = context.openFileOutput(filename, Context.MODE_PRIVATE);
        fileOutputStream.write(IOUtils.toByteArray(inputStream));
        fileOutputStream.close();

    } catch (FileNotFoundException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

And here is how I load the pdf document in PDFView:

private void loadPDFData()
{
    File file = new File(princhDocument.getPath());

    pdfView.fromFile(file).onLoad(new OnLoadCompleteListener() {
        @Override
        public void loadComplete(int i) {
            princhDocument.setNumberOfPages(pdfView.getPageCount());

            pdfView.recycle();
        }
    }).load();
}