android - 如何在没有用户交互的情况下在Android中发送电子邮件？

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在没有用户交互的情况下，如何发送电子邮件？我从Mail类和“ g mail Sender”类中大量使用代码，并使用库并在清单中添加Internet权限。

但是我所有的代码都给了我相同的错误，该错误是未通过身份验证的端口。
我正在使用端口代码：465，888，585。我已经检查了所有这些，但是每次都会遇到相同的错误。

请帮我。

最佳答案

就我而言，我使用了Java Mail API，下面的代码也可以使用。请添加必要的详细信息，例如用户名，密码，电子邮件ID等

    public class Mail extends javax.mail.Authenticator {
  private String _user;
  private String _pass;

  private String[] _to ;
  private String _from;

  private String _port;
  private String _sport;

  private String _host;

  private String _subject;
  private String _body;

  private boolean _auth;

  private boolean _debuggable;

  private Multipart _multipart;


  public Mail() {
    _host = "smtp.gmail.com"; // default smtp server
    _port = "465"; // default smtp port
    _sport = "465"; // default socketfactory port

    _user = "username"; // username
    _pass = "password"; // password
    _from = "[email protected]"; // email sent from

    _to = new String[] {"[email protected]"};
    _subject = "subject"; // email subject
    _body = "test"; // email body

    _debuggable = false; // debug mode on or off - default off
    _auth = true; // smtp authentication - default on

    _multipart = new MimeMultipart();

    // There is something wrong with MailCap, javamail can not find a handler for the multipart/mixed part, so this bit needs to be added.
    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");
    CommandMap.setDefaultCommandMap(mc);
  }
  public Mail(String user, String pass) {
    _user = user;
    _pass = pass;
  }

  public boolean send() throws Exception {
    Properties props = _setProperties();

    if(!_user.equals("") && !_pass.equals("") && _to.length > 0 && !_from.equals("") && !_subject.equals("") && !_body.equals("")) {
      Session session = Session.getInstance(props, this);

      MimeMessage msg = new MimeMessage(session);

      msg.setFrom(new InternetAddress(_from));

      InternetAddress[] addressTo = new InternetAddress[_to.length];
      for (int i = 0; i < _to.length; i++) {
        addressTo[i] = new InternetAddress(_to[i]);
      }
        msg.setRecipients(MimeMessage.RecipientType.TO, addressTo);

      msg.setSubject(_subject);
      msg.setSentDate(new Date());

      // setup message body
      BodyPart messageBodyPart = new MimeBodyPart();
      messageBodyPart.setText(_body);
      _multipart.addBodyPart(messageBodyPart);

      // adding attachment
      addAttachment("filename");//replace with file name u need

      // Put parts in message
      msg.setContent(_multipart);

      // send email
      Transport transport = session.getTransport("smtps");
      transport.connect(_host, 465,_user, _pass);
      Transport.send(msg);

      return true;
    } else {
      return false;
    }
  }

  public void addAttachment(String filename) throws Exception {
    BodyPart messageBodyPart = new MimeBodyPart();
    DataSource source = new FileDataSource(filename);
    messageBodyPart.setDataHandler(new DataHandler(source));
    messageBodyPart.setFileName(filename);

    _multipart.addBodyPart(messageBodyPart);
  }

  @Override
  public PasswordAuthentication getPasswordAuthentication() {
    return new PasswordAuthentication(_user, _pass);
  }

  private Properties _setProperties() {
    Properties props = new Properties();

    props.put("mail.smtp.host", _host);

    if(_debuggable) {
      props.put("mail.debug", "true");
    }

    if(_auth) {
      props.put("mail.smtp.auth", "true");
    }

    props.put("mail.smtp.port", _port);
    props.put("mail.smtp.socketFactory.port", _sport);
    props.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
    props.put("mail.smtp.socketFactory.fallback", "false");
    props.put("mail.smtp.starttls.enable", "true");

    return props;
  }

  // the getters and setters
  public String getBody() {
    return _body;
  }

  public void setBody(String _body) {
    this._body = _body;
  }

  // more of the getters and setters É..
}

并编写一个异步任务来发送邮件

    public class SendTask extends AsyncTask<String, Integer, Integer> {

private ProgressDialog dialog;
private Context mContext;

public SendTask(Context mContext){
    this.mContext = mContext;

}

protected void onPreExecute() {
    this.dialog = new ProgressDialog(mContext);
    this.dialog.setCancelable(false);
    this.dialog.setMessage("sending");
    this.dialog.show();
}

protected Integer doInBackground(String... ids) {

    Mail mail = new Mail();
    try {
        mail.send();
    } catch (Exception e) {
        e.printStackTrace();
    }
    return 1;
}

}

关于android - 如何在没有用户交互的情况下在Android中发送电子邮件？ ，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/20393898/