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(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.

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Android™ Java Libraries

Android C/C++ Libraries

// 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);

    // 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);
    boolean success = imap.Connect("imap.someMailServer.com");
    if (success != true) {
        Log.i(TAG, imap.lastErrorText());
        return;
        }

    // Login
    success = imap.Login("***","***");
    if (success != true) {
        Log.i(TAG, imap.lastErrorText());
        return;
        }

    // Select an IMAP mailbox
    success = imap.SelectMailbox("Inbox");
    if (success != true) {
        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 = imap.Search("UNSEEN",fetchUids);
    if (imap.get_LastMethodSuccess() == 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;
    int msgId;
    while (i < messageSet.get_Count()) {
        msgId = messageSet.GetId(i);
        Log.i(TAG, String.valueOf(msgId));
        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."
  }
}

 

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