Attaching a PDF to an Email from Android App - File Size is Zero

I am trying to attach a PDF file called download.pdf to an email in my Android App. I am copying the file first to the SDCard and then attaching it the email. I'm not if relevant, but I am testing on a galaxy tab device. The external storage path returns mnt/sdcard/ My code is as follows : ``` public void sendemail() throws IOException { CopyAssets(); String emailAddress[] = {""}; File externalStorage = Environment.getExternalStorageDirectory(); Uri uri = Uri.fromFile(new File(externalStorage.getAbsolutePath() + "/" + "download.pdf")); Intent emailIntent = new Intent(Intent.ACTION_SEND); emailIntent.putExtra(Intent.EXTRA_EMAIL, emailAddress); emailIntent.putExtra(Intent.EXTRA_SUBJECT, "Subject"); emailIntent.putExtra(Intent.EXTRA_TEXT, "Text"); emailIntent.setType("application/pdf"); emailIntent.putExtra(Intent.EXTRA_STREAM, uri); startActivity(Intent.createChooser(emailIntent, "Send email using:")); } public void CopyAssets() { AssetManager assetManager = getAssets(); String[] files = null; try { files = assetManager.list(""); } catch (IOException e) { Log.e("tag", e.getMessage()); } for(String filename : files) { InputStream in = null; OutputStream out = null; if (filename.equals("download.pdf")) { try { System.out.println("Filename is " + filename); in = assetManager.open(filename); File externalStorage = Environment.getExternalStorageDirectory(); out = new FileOutputStream(externalStorage.getAbsolutePath() + "/" + filename); System.out.println("Loacation is" + out); copyFile(in, out); in.close(); in = null; out.flush(); out.close(); out = null; } catch(Exception e) { Log.e("tag", e.getMessage()); } } } } private void copyFile(InputStream in, OutputStream out) throws IOException { byte[] buffer = new byte[1024]; int read; while((read = in.read(buffer)) != -1){ out.write(buffer, 0, read); } } } ``` The problem is that the file that is attached is 0 bytes in size. Can anyone spot what might be wrong ? EDIT I can see that the file has been saved onto the device if I look in settings, therefore this must be a problem around how I am attaching the file to the email. In the error log I am seeing : ``` gMail Attachment URI: file:///mnt/sdcard/download.pdf gMail type: application/pdf gmail name: download.pdf gmail size: 0 ``` EDIT Wondering if this is a bug on the galaxy tab ? If I open the file via a pdf viewer (from my app) then try to attach to a gmail email, the size is again 0. Can anyone verify ? Thank you.