eMail with attachment using java mail api in android

Question

I am beginning with android and this is my first program.

This is what my code looks like. I am able to send an email (in background) using this code but unable to a

Answer 1

First, clean up your code by getting rid of the socket factory stuff that's not needed.

The reason nothing's being attached is that you're adding a body part to the multipart, but you're never using the multipart. You need to set the multipart as the content of your message, and the multipart needs to include body parts for the main text body and the attachment. See also the MimeBodyPart.attachFile method.

Answer 2

package com.mail.example;

import java.util.Properties;

import javax.activation.CommandMap;
import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.activation.FileDataSource;
import javax.activation.MailcapCommandMap;
import javax.mail.BodyPart;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;

public class SendFileEmail
{
 public void send(String filepath)
 {

  // Recipient's email ID needs to be mentioned.
  String to = "abc@gmail.com";

  // Sender's email ID needs to be mentioned
  final String from = "xyz@gmail.com";
 // final String username = "xyz";
  final String pass = "xyz123";
  // Assuming you are sending email from localhost
  String host = "smtp.gmail.com";

  // Get system properties
  Properties properties = System.getProperties();

  // Setup mail server
  properties.setProperty("mail.smtp.host", host);
  properties.put("mail.smtp.user", from);
  properties.put("mail.smtp.password", pass);
  properties.put("mail.smtp.port", "587");
  properties.put("mail.smtp.starttls.enable","true");
  properties.put("mail.smtp.auth", "true");

  //Read more: http://mrbool.com/how-to-work-with-java-mail-api-in-android/27800#ixzz3E2T8ZbpJ


  // Get the default Session object.
  //Session session = Session.getDefaultInstance(properties);


  Session session = Session.getInstance(properties, new javax.mail.Authenticator() {
        protected PasswordAuthentication getPasswordAuthentication() {
            return new PasswordAuthentication(from, pass);
        }
    });


  try{
     // Create a default MimeMessage object.
     MimeMessage message = new MimeMessage(session);

     // Set From: header field of the header.
     message.setFrom(new InternetAddress(from));

     // Set To: header field of the header.
     message.addRecipient(Message.RecipientType.TO,
                              new InternetAddress(to));

     // Set Subject: header field
     message.setSubject("This is the Subject Line!");

     // Create the message part 
     BodyPart messageBodyPart = new MimeBodyPart();

     // Fill the message
     messageBodyPart.setText("This is message body");

     // Create a multipar message
     Multipart multipart = new MimeMultipart();

     // Set text message part
     multipart.addBodyPart(messageBodyPart);

     // Part two is attachment
     messageBodyPart = new MimeBodyPart();
     DataSource source = new FileDataSource(filepath);
     messageBodyPart.setDataHandler(new DataHandler(source));
     messageBodyPart.setFileName(filepath);
     multipart.addBodyPart(messageBodyPart);


     MailcapCommandMap mc = (MailcapCommandMap) CommandMap.getDefaultCommandMap(); 
     mc.addMailcap("text/html;; x-java-content-handler=com.sun.mail.handlers.text_html"); 
     mc.addMailcap("text/xml;; x-java-content-handler=com.sun.mail.handlers.text_xml"); 
     mc.addMailcap("text/plain;; x-java-content-handler=com.sun.mail.handlers.text_plain"); 
     mc.addMailcap("multipart/*;; x-java-content-handler=com.sun.mail.handlers.multipart_mixed"); 
     mc.addMailcap("message/rfc822;; x-java-content- handler=com.sun.mail.handlers.message_rfc822");

     // Send the complete message parts
     message.setContent(multipart);
     // Send message
     Transport.send(message);
     System.out.println("Sent message successfully....");
  }catch (MessagingException mex) {
     mex.printStackTrace();
  }
}
 }

call the method like this

public class SendMail {

/**
 * @param args
 */
public static void main(String[] args) {
    new SendFileEmail().send("sample.xlsx");
}

}

If the file is in asset folder example test.txt

File f = new File(getCacheDir()+"/test.txt");
if (!f.exists()) try {

InputStream is = getAssets().open("test.txt");
int size = is.available();
byte[] buffer = new byte[size];
is.read(buffer);
is.close();


FileOutputStream fos = new FileOutputStream(f);
fos.write(buffer);
fos.close();
 } catch (Exception e) { throw new RuntimeException(e); }

new SendFileEmail().send(f.getPath());