Android™

Process New Email by Scanning for Senders

Scan email and save application-selected emails to EML files with unique filenames. Android™

// Important: Don't forget to include the call to System.loadLibrary
// as shown at the bottom of this code sample.
package com.test;

import android.app.Activity;
import com.chilkatsoft.*;

import android.widget.TextView;
import android.os.Bundle;

public class SimpleActivity extends Activity {

  private static final String TAG = "Chilkat";

  // Called when the activity is first created.
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    boolean success = false;

    //  This example assumes the Chilkat API to have been previously unlocked.
    //  See Global Unlock Sample for sample code.

    CkImap imap = new CkImap();

    //  Connect to an IMAP server.
    //  Use TLS
    imap.put_Ssl(true);
    imap.put_Port(993);
    success = imap.Connect("imap.example.com");
    if (success == false) {
        Log.i(TAG, imap.lastErrorText());
        return;
        }

    //  Login
    success = imap.Login("myLogin","myPassword");
    if (success == false) {
        Log.i(TAG, imap.lastErrorText());
        return;
        }

    //  Select an IMAP mailbox
    success = imap.SelectMailbox("Inbox");
    if (success == false) {
        Log.i(TAG, imap.lastErrorText());
        return;
        }

    //  We can choose to fetch UIDs or sequence numbers.
    boolean fetchUids = true;

    //  Fetch messages from the mailbox using a search criteria.
    //  This example finds NEW emails: these are emails that have the RECENT flag set, but not the SEEN flag:
    CkMessageSet messageSet = new CkMessageSet();
    success = imap.QueryMbx("NEW",fetchUids,messageSet);
    if (success == false) {
        Log.i(TAG, imap.lastErrorText());
        return;
        }

    //  This example will download headers, and then download
    //  the full email for those emails sent from a contact
    //  in our database.

    //  When downloading headers, each email object contains
    //  (obviously) the headers, but the body will be missing.
    //  Also, attachments will not be included.  However, it is
    //  possible to get information about the attachments
    //  as well as the complete size of the email.
    CkEmailBundle bundle = new CkEmailBundle();
    boolean headersOnly = true;
    success = imap.FetchMsgSet(headersOnly,messageSet,bundle);
    if (success == false) {
        Log.i(TAG, imap.lastErrorText());
        return;
        }

    //  Loop over the email objects...
    CkEmail emailHeader = new CkEmail();
    CkEmail fullEmail = new CkEmail();
    int i = 0;
    int numEmails = bundle.get_MessageCount();
    while (i < numEmails) {
        bundle.EmailAt(i,emailHeader);

        //  The sender's email address and name are available
        //  in the From, FromAddress, and FromName properties.
        //  If the sender is "Chilkat Support <support@chilkatsoft.com",
        //  then the From property will hold the entire string.
        //  the FromName property contains"Chilkat Support",
        //  and the FromAddress property contains "support@chilkatsoft.com";
        Log.i(TAG, emailHeader.ck_from());
        Log.i(TAG, emailHeader.fromAddress());
        Log.i(TAG, emailHeader.fromName());

        //  Assume at this point your code checks to see if the sender
        //  is one in your contacts database.  If so, this is
        //  the code you would write to download the entire
        //  email and save it to a file.

        //  The ckx-imap-uid header field is added when
        //  headers are downloaded.  This makes it possible
        //  to get the UID from the email object.
        String uidStr = emailHeader.getHeaderField("ckx-imap-uid");
        int uid = Integer.toString(uidStr);

        success = imap.FetchEmail(false,uid,true,fullEmail);
        if (success == false) {
            Log.i(TAG, imap.lastErrorText());
            return;
            }

        //  You can use the GenerateFilename method to
        //  generate a unique filename...
        String filename = fullEmail.generateFilename();

        //  SaveEml saves the entire email, including attachments.
        success = fullEmail.SaveEml(filename);

        Log.i(TAG, "--");

        i = i + 1;
        }

    //  Disconnect from the IMAP server.
    success = imap.Disconnect();

  }

  static {
      System.loadLibrary("chilkat");

      // Note: If the incorrect library name is passed to System.loadLibrary,
      // then you will see the following error message at application startup:
      //"The application <your-application-name> has stopped unexpectedly. Please try again."
  }
}