Android™

Determine the Number of Unseen Email Messages

Demonstrates how to determine how many unseen messages exist in an email account on an IMAP server. 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 requires 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("***","***");
    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;
        }

    //  After selecting the mailbox. the total number of emails
    //  is immediately available:
    int totalNum = imap.get_NumMessages();
    Log.i(TAG, "Num messages = " + String.valueOf(totalNum));

    //  To determine the number of unseen messages, a call
    //  to Search is required, which returns the set of UIDs
    //  of all unseen messages.

    //  We can choose to fetch UIDs or sequence numbers.
    boolean fetchUids = true;
    CkMessageSet messageSet = new CkMessageSet();
    success = imap.QueryMbx("UNSEEN",fetchUids,messageSet);
    if (success == false) {
        Log.i(TAG, imap.lastErrorText());
        return;
        }

    int numUnseen = messageSet.get_Count();
    Log.i(TAG, String.valueOf(numUnseen));

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

    //  Display the UIDs
    int i = 0;
    while (i < messageSet.get_Count()) {
        Log.i(TAG, String.valueOf(messageSet.GetId(i)));
        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."
  }
}