Send Email Animation Along with sending of mail.

MainActivity.java

package com.cooltechworks.envelopeanimation;

import android.content.Intent;
import android.os.AsyncTask;
import android.os.Handler;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.Animation;
import android.view.animation.AnimationSet;
import android.view.animation.RotateAnimation;
import android.view.animation.ScaleAnimation;
import android.view.animation.TranslateAnimation;
import android.widget.RelativeLayout;
import android.widget.TextView;

import com.sun.mail.smtp.SMTPTransport;

import java.util.Date;
import java.util.Properties;

import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;


public class MainActivity extends AppCompatActivity {

    private static final int EMAIL_ACTIVITY_REQUEST = 1;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.act_main);


        findViewById(R.id.show_dialog_btn).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                Intent intent = new Intent(MainActivity.this, EnvelopeActivity.class);
                startActivityForResult(intent, EMAIL_ACTIVITY_REQUEST);
            }
        });


    }

    public void onActivityResult(int requestCode, int resultCode, Intent data) {

        if(requestCode == EMAIL_ACTIVITY_REQUEST && resultCode == RESULT_OK) {

            String[] to = data.getStringArrayExtra(Intent.EXTRA_EMAIL);
            String subject = data.getStringExtra(Intent.EXTRA_SUBJECT);
            String msg = data.getStringExtra(Intent.EXTRA_TEXT);

            Log.d(MainActivity.class.getSimpleName(),"To:"+to[0]);
            Log.d(MainActivity.class.getSimpleName(),"Subject:"+subject);
            Log.d(MainActivity.class.getSimpleName(),"Msg:"+msg);

            sendEmail(to[0],subject,msg);

        }

    }

    public void sendEmail(String toAddress, String subject, String msgBody) {

        String fromAddress = "[email protected]";

        String smtpHost = "<your SMTP Host>";
        String smtpLogin = "<your SMTP Login>";
        String smtpPassword = "<your SMTP Password>";


        new AsyncTask<String, Void, Void>() {

            @Override
            protected Void doInBackground(String... params) {

                String fromAddress = params[0];
                String toAddress = params[1];
                String subject = params[2];
                String msgBody = params[3];
                String smtpLogin =  params[4];
                String smtpPassword = params[5];
                String smtpHost = params[6];

                try {
                    Properties props = System.getProperties();
                    props.put("mail.smtps.host", smtpHost);
                    props.put("mail.smtps.auth", "true");
                    Session session = Session.getInstance(props, null);
                    Message msg = new MimeMessage(session);
                    msg.setFrom(new InternetAddress(fromAddress));
                    msg.setRecipients(Message.RecipientType.TO,
                            InternetAddress.parse(toAddress, false));
                    msg.setSubject(subject);
                    msg.setText(msgBody);
                    msg.setSentDate(new Date());
                    SMTPTransport t =
                            (SMTPTransport) session.getTransport("smtps");

                    t.connect(smtpHost, smtpLogin, smtpPassword);

                    t.sendMessage(msg, msg.getAllRecipients());
                    System.out.println("Response: " + t.getLastServerResponse());
                    t.close();
                } catch (MessagingException e) {
                    e.printStackTrace();
                }
                return null;
            }
        }.execute(fromAddress, toAddress, subject, msgBody,smtpLogin,smtpPassword,smtpHost );
    }

}