android – 如何以编程方式发送简单的电子邮件？ (存在一种简单的方法吗？)
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内容图文
我的应用程序上有一个文本字段,还有一个按钮.用户时我只想要那个
按下按钮,我的应用程序必须发送带有“Hello”文本的电子邮件
文本字段上的方向.
有一个简单的方法吗？
解决方法:
第一种方式.
如果您不希望链接到本机电子邮件程序或gmail程序(通??过意图)发送邮件,但在后台发送电子邮件,请参阅下面的代码.
您可以使用此助手类并根据需要进行调整.
package com.myapp.android.model.service;
import android.util.Log;
import com.myapp.android.MyApp;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Properties;
import javax.activation.DataHandler;
import javax.mail.Authenticator;
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.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMultipart;
public class MailService {
// public static final String MAIL_SERVER = "localhost";
private String toList;
private String ccList;
private String bccList;
private String subject;
final private static String SMTP_SERVER = DataService
.getSetting(DataService.SETTING_SMTP_SERVER);
private String from;
private String txtBody;
private String htmlBody;
private String replyToList;
private ArrayList<Attachment> attachments;
private boolean authenticationRequired = false;
public MailService(String from, String toList, String subject, String txtBody, String htmlBody,
Attachment attachment) {
this.txtBody = txtBody;
this.htmlBody = htmlBody;
this.subject = subject;
this.from = from;
this.toList = toList;
this.ccList = null;
this.bccList = null;
this.replyToList = null;
this.authenticationRequired = true;
this.attachments = new ArrayList<Attachment>();
if (attachment != null) {
this.attachments.add(attachment);
}
}
public MailService(String from, String toList, String subject, String txtBody, String htmlBody,
ArrayList<Attachment> attachments) {
this.txtBody = txtBody;
this.htmlBody = htmlBody;
this.subject = subject;
this.from = from;
this.toList = toList;
this.ccList = null;
this.bccList = null;
this.replyToList = null;
this.authenticationRequired = true;
this.attachments = attachments == null ? new ArrayList<Attachment>()
: attachments;
}
public void sendAuthenticated() throws AddressException, MessagingException {
authenticationRequired = true;
send();
}
/**
* Send an e-mail
*
* @throws MessagingException
* @throws AddressException
*/
public void send() throws AddressException, MessagingException {
Properties props = new Properties();
// set the host smtp address
props.put("mail.smtp.host", SMTP_SERVER);
props.put("mail.user", from);
props.put("mail.smtp.starttls.enable", "true"); // needed for gmail
props.put("mail.smtp.auth", "true"); // needed for gmail
props.put("mail.smtp.port", "587"); // gmail smtp port
/*Authenticator auth = new Authenticator() {
@Override
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication("mobile@mydomain.com", "mypassword");
}
};*/
Session session;
if (authenticationRequired) {
Authenticator auth = new SMTPAuthenticator();
props.put("mail.smtp.auth", "true");
session = Session.getDefaultInstance(props, auth);
} else {
session = Session.getDefaultInstance(props, null);
}
// get the default session
session.setDebug(true);
// create message
Message msg = new javax.mail.internet.MimeMessage(session);
// set from and to address
try {
msg.setFrom(new InternetAddress(from, from));
msg.setReplyTo(new InternetAddress[]{new InternetAddress(from,from)});
} catch (Exception e) {
msg.setFrom(new InternetAddress(from));
msg.setReplyTo(new InternetAddress[]{new InternetAddress(from)});
}
// set send date
msg.setSentDate(Calendar.getInstance().getTime());
// parse the recipients TO address
java.util.StringTokenizer st = new java.util.StringTokenizer(toList, ",");
int numberOfRecipients = st.countTokens();
javax.mail.internet.InternetAddress[] addressTo = new javax.mail.internet.InternetAddress[numberOfRecipients];
int i = 0;
while (st.hasMoreTokens()) {
addressTo[i++] = new javax.mail.internet.InternetAddress(st
.nextToken());
}
msg.setRecipients(javax.mail.Message.RecipientType.TO, addressTo);
// parse the replyTo addresses
if (replyToList != null && !"".equals(replyToList)) {
st = new java.util.StringTokenizer(replyToList, ",");
int numberOfReplyTos = st.countTokens();
javax.mail.internet.InternetAddress[] addressReplyTo = new javax.mail.internet.InternetAddress[numberOfReplyTos];
i = 0;
while (st.hasMoreTokens()) {
addressReplyTo[i++] = new javax.mail.internet.InternetAddress(
st.nextToken());
}
msg.setReplyTo(addressReplyTo);
}
// parse the recipients CC address
if (ccList != null && !"".equals(ccList)) {
st = new java.util.StringTokenizer(ccList, ",");
int numberOfCCRecipients = st.countTokens();
javax.mail.internet.InternetAddress[] addressCC = new javax.mail.internet.InternetAddress[numberOfCCRecipients];
i = 0;
while (st.hasMoreTokens()) {
addressCC[i++] = new javax.mail.internet.InternetAddress(st
.nextToken());
}
msg.setRecipients(javax.mail.Message.RecipientType.CC, addressCC);
}
// parse the recipients BCC address
if (bccList != null && !"".equals(bccList)) {
st = new java.util.StringTokenizer(bccList, ",");
int numberOfBCCRecipients = st.countTokens();
javax.mail.internet.InternetAddress[] addressBCC = new javax.mail.internet.InternetAddress[numberOfBCCRecipients];
i = 0;
while (st.hasMoreTokens()) {
addressBCC[i++] = new javax.mail.internet.InternetAddress(st
.nextToken());
}
msg.setRecipients(javax.mail.Message.RecipientType.BCC, addressBCC);
}
// set header
msg.addHeader("X-Mailer", "MyAppMailer");
msg.addHeader("Precedence", "bulk");
// setting the subject and content type
msg.setSubject(subject);
Multipart mp = new MimeMultipart("related");
// set body message
MimeBodyPart bodyMsg = new MimeBodyPart();
bodyMsg.setText(txtBody, "iso-8859-1");
if (attachments.size()>0) htmlBody = htmlBody.replaceAll("#filename#",attachments.get(0).getFilename());
if (htmlBody.indexOf("#header#")>=0) htmlBody = htmlBody.replaceAll("#header#",attachments.get(1).getFilename());
if (htmlBody.indexOf("#footer#")>=0) htmlBody = htmlBody.replaceAll("#footer#",attachments.get(2).getFilename());
bodyMsg.setContent(htmlBody, "text/html");
mp.addBodyPart(bodyMsg);
// set attachements if any
if (attachments != null && attachments.size() > 0) {
for (i = 0; i < attachments.size(); i++) {
Attachment a = attachments.get(i);
BodyPart att = new MimeBodyPart();
att.setDataHandler(new DataHandler(a.getDataSource()));
att.setFileName( a.getFilename() );
att.setHeader("Content-ID", "<" + a.getFilename() + ">");
mp.addBodyPart(att);
}
}
msg.setContent(mp);
// send it
try {
javax.mail.Transport.send(msg);
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* SimpleAuthenticator is used to do simple authentication when the SMTP
* server requires it.
*/
private static class SMTPAuthenticator extends javax.mail.Authenticator {
@Override
protected PasswordAuthentication getPasswordAuthentication() {
String username = DataService
.getSetting(DataService.SETTING_SMTP_USER);
String password = DataService
.getSetting(DataService.SETTING_SMTP_PASSWORD);
return new PasswordAuthentication(username, password);
}
}
public String getToList() {
return toList;
}
public void setToList(String toList) {
this.toList = toList;
}
public String getCcList() {
return ccList;
}
public void setCcList(String ccList) {
this.ccList = ccList;
}
public String getBccList() {
return bccList;
}
public void setBccList(String bccList) {
this.bccList = bccList;
}
public String getSubject() {
return subject;
}
public void setSubject(String subject) {
this.subject = subject;
}
public void setFrom(String from) {
this.from = from;
}
public void setTxtBody(String body) {
this.txtBody = body;
}
public void setHtmlBody(String body) {
this.htmlBody = body;
}
public String getReplyToList() {
return replyToList;
}
public void setReplyToList(String replyToList) {
this.replyToList = replyToList;
}
public boolean isAuthenticationRequired() {
return authenticationRequired;
}
public void setAuthenticationRequired(boolean authenticationRequired) {
this.authenticationRequired = authenticationRequired;
}
}
并使用这个类：
MailService mailer = new MailService("from@mydomain.com","to@domain.com","Subject","TextBody", "<b>HtmlBody</b>", (Attachment) null);
try {
mailer.sendAuthenticated();
} catch (Exception e) {
Log.e(AskTingTing.APP, "Failed sending email.", e);
}
第二种方式.
另一种选择,如果您不介意在Android上使用本机电子邮件客户端或gmail发送邮件(但用户实际上必须最终在电子邮件客户端中点击发送按钮),您可以这样做：
startActivity(new Intent(Intent.ACTION_SENDTO, Uri.parse("mailto:to@gmail.com")));
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