如何在自动电子邮件Android应用程序中发送附件中的位图图像

下面是我撰写电子邮件的代码。但在这里，我没有任何选项从SD卡附加位图图像

private Message createMessage(String email, String subject, String messageBody, Session session) throws MessagingException, UnsupportedEncodingException {
    Message message = new MimeMessage(session);
    message.setFrom(new InternetAddress("tutorials@tiemenschut.com", "AutoScreenShot Application"));
    message.addRecipient(Message.RecipientType.TO, new InternetAddress(email, email));
    message.setSubject(subject);
    message.setText(messageBody);
    return message;
}

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我添加了下面的一组代码，这对我很有用

这有助于我发送附件

private Message createMessage(String email, String subject, String messageBody, Session session) throws MessagingException, UnsupportedEncodingException {
        Message message = new MimeMessage(session);
        message.setFrom(new InternetAddress("tutorials@tiemenschut.com", "AutoScreenShot Application"));
        message.addRecipient(Message.RecipientType.TO, new InternetAddress(email, email));
        message.setSubject(subject);
        message.setText(messageBody);
        MimeBodyPart messageBodyPart = new MimeBodyPart();

        Multipart multipart = new MimeMultipart();

        messageBodyPart = new MimeBodyPart();
        String file = "/sdcard/Pictures/screenshot.png";
        String fileName = "screenshot.png";
        DataSource source = new FileDataSource(file);
        messageBodyPart.setDataHandler(new DataHandler(source));
        messageBodyPart.setFileName(fileName);
        multipart.addBodyPart(messageBodyPart);

        message.setContent(multipart);

        return message;
    }

---

我添加了下面的一组代码，这对我很有用

这有助于我发送附件

private Message createMessage(String email, String subject, String messageBody, Session session) throws MessagingException, UnsupportedEncodingException {
        Message message = new MimeMessage(session);
        message.setFrom(new InternetAddress("tutorials@tiemenschut.com", "AutoScreenShot Application"));
        message.addRecipient(Message.RecipientType.TO, new InternetAddress(email, email));
        message.setSubject(subject);
        message.setText(messageBody);
        MimeBodyPart messageBodyPart = new MimeBodyPart();

        Multipart multipart = new MimeMultipart();

        messageBodyPart = new MimeBodyPart();
        String file = "/sdcard/Pictures/screenshot.png";
        String fileName = "screenshot.png";
        DataSource source = new FileDataSource(file);
        messageBodyPart.setDataHandler(new DataHandler(source));
        messageBodyPart.setFileName(fileName);
        multipart.addBodyPart(messageBodyPart);

        message.setContent(multipart);

        return message;
    }