(Android™) Transition from MailMan.MxLookup to Dns.Query

Provides instructions for replacing deprecated MxLookup method calls with the Chilkat Dns class.

Note: This example requires Chilkat v11.0.0 or greater.

Chilkat Android™ Downloads 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);

    CkMailMan mailman = new CkMailMan();

    // ...
    // ...

    String emailAddr = "joe@example.com";

    // ------------------------------------------------------------------------
    // The MxLookup method is deprecated:

    String domain = mailman.mxLookup(emailAddr);
    if (mailman.get_LastMethodSuccess() == false) {
        Log.i(TAG, mailman.lastErrorText());
        return;
        }

    // ------------------------------------------------------------------------
    // Do the equivalent using the Chilkat DNS class

    CkDns dns = new CkDns();

    CkJsonObject json = new CkJsonObject();

    // This gets all MX domains for an email address.  (Typically one domain.)
    // The preferred domain will be at index 0 (see below).
    boolean success = dns.Query("MX",emailAddr,json);
    if (success == false) {
        Log.i(TAG, dns.lastErrorText());
        return;
        }

    int i = 0;
    int count_i = json.SizeOfArray("answer.mx");
    while (i < count_i) {
        json.put_I(i);
        domain = json.stringOf("answer.mx[i].domain");
        Log.i(TAG, domain);
        i = i + 1;
        }


  }

  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."
  }
}