debugging - Using AsyncTask to Send Android Email

Question

I had recently asked a question regarding the following code:

Sending Email in Android using JavaMail API without using the default/built-in app

I had asked this in regards to a network error, as per a previous question:

Need Help Debugging Email Code

My question is, how would I implement an AsyncTask in order to successfully send an email with this Android code? Every tutorial that I see informs me that I should do

extend AsyncTask {

However, GMailSender.java already has this defined as:

public class GMailSender extends javax.mail.Authenticator

Would anyone be able to help me? Thanks!

NOTE:

Please don't be like the idiot who had -1^ed this question and posted the exact answer as was given in Sending Email in Android using JavaMail API without using the default/built-in app. I am unable to use that exact coding, due to the fact that it is no longer possible to run a network operation on the main thread of an Android application. I am looking for a way to use AsyncTask in order to run the operation in the background. What I am unable to find out is how to do

extend AsyncTask {

without touching

public class GMailSender extends javax.mail.Authenticator

Answer 1

There is a pretty good example right on the AsyncTask doc page.

Pass your GMailSender object in to an AsyncTask, and call GMailSender#sendMail during doInBackground.

That is,

public void onClick(View v) {
    final GMailSender sender = new GMailSender("username@gmail.com", "password");
    new AsyncTask<Void, Void, Void>() {
        @Override public Void doInBackground(Void... arg) {
            try {   
                sender.sendMail("This is Subject",   
                    "This is Body",   
                    "user@gmail.com",   
                    "user@yahoo.com");   
            } catch (Exception e) {   
                Log.e("SendMail", e.getMessage(), e);   
            } 
        }
    }.execute();

}