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POHow to download Email by ID?
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  1. POHow to download Email by ID?
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    copied!<p>I'm trying to do <strong>lazy downloading email</strong>. Basically the problem is that my emails are heavy. So I'm downloading only subject and message-id and only when it's needed I'm downloading rest of email.</p> <p>The first step is to download subject and message-id:</p> <pre><code>public void downloadInBackground(EmailAccount emailAccount, String folderName) { List&lt;Email&gt; emails = new ArrayList&lt;Email&gt;(); Message[] message = null; Properties props = System.getProperties(); props.setProperty("mail.store.protocol", "imaps"); Session session = Session.getDefaultInstance(props, null); Store store = null; Folder folder = null; try { Log.getInstance().d("xxx", "starting dowanloading"); store = session.getStore("imaps"); store.connect(emailAccount.getImapServer(), emailAccount.getUsername(), emailAccount.getPassword()); folder = store.getFolder(folderName); folder.open(Folder.READ_ONLY); message = folder.getMessages(); FetchProfile fp = new FetchProfile(); fp.add(FetchProfile.Item.ENVELOPE); fp.add("Subject"); fp.add("From"); fp.add("To"); fp.add("Cc"); fp.add("Bcc"); fp.add("ReplyTo"); fp.add("Date"); folder.fetch(message, fp); for (int i = 0; i &lt; message.length; i++) { Message m = message[i]; String emailId = null; m.getHeader("Message-Id"); Enumeration&lt;Header&gt; headers = m.getAllHeaders(); while (headers.hasMoreElements()) { Header h = headers.nextElement(); String mID = h.getName(); if (StringUtils.containsIgnoreCase(mID, "Message-ID")) { emailId = h.getValue(); } } if (emailId != null) { Email newMail = new LazyEmail(m, emailAccount, folderName, emailId); emails.add(newMail); } } } catch (MessagingException e) { ... } finally { if (folder != null) { folder.close(false); } if (store != null) { store.close(); } } update(emails); } </code></pre> <p>Next in LazyEmail, when it's needed. I'm downloading rest of email:</p> <pre><code>public void updateContentText() { Properties props = System.getProperties(); props.setProperty("mail.store.protocol", "imaps"); Session session = Session.getDefaultInstance(props, null); Store store = null; Folder folder = null; try { store = session.getStore("imaps"); store.connect(mEmailAccount.getImapServer(), mEmailAccount.getUsername(), mEmailAccount.getPassword()); folder = store.getFolder(mFolderName); folder.open(Folder.READ_ONLY); // finding email SearchTerm searchTerm = new MessageIDTerm(mEmailId); Message[] messages = folder.search(searchTerm); assert messages.length == 1; // setting context text Part mail = messages[0]; if (mail.getContent() instanceof Multipart) { setContentText((Multipart) mail.getContent()); } else { setContentText((String) mail.getContent()); } updateState = UpdateState.CONTENT_TEXT_DOWNLOADED; } catch (IOException e) { ... } finally { if (folder != null) { folder.close(false); } if (store != null) { store.close(); } } } </code></pre> <p>Code seems looks ok. But when I'm running my Android application I gets error in line Message[] messages = folder.search(searchTerm);</p> <pre><code> javax.mail.MessagingException: A4 BAD Execute(): Error in command received; </code></pre>
 

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