我正在制作一个应用程序,允许用户拍照并自动通过电子邮件将其发送到他选择的电子邮件地址。到目前为止,我能够拍照并存储在 SD 卡中。现在我只需要从文件夹 (/sdcard/Pictures/PhotoSender/) 获取图片并自动发送到用户请求的电子邮件的功能。我该怎么做?
我在该文件夹中有图片。我只需要一些功能来生成电子邮件,将图片 (.jpg) 作为附件发送(所有这些都在后台)。当电子邮件完全发送后,应弹出提示框,提示“上传完成”。同时用户应该可以自由拍摄更多照片,所以上传请求应该放在一个队列中。用户不应该使用他的电子邮件帐户登录来发送。如果需要,我可以为我的应用程序创建一个电子邮件帐户作为“发件人”。请帮助我!
下面是一个完整的类,支持在Android中发送带附件的邮件
这是一个实用函数,用于发送带附件的邮件,您的附件只是图片文件的完整路径
public static boolean sendEmail(String to, String from, String subject,
String message,String[] attachements) throws Exception {
Mail mail = new Mail();
if (subject != null && subject.length() > 0) {
mail.setSubject(subject);
} else {
mail.setSubject("Subject");
}
if (message != null && message.length() > 0) {
mail.setBody(message);
} else {
mail.setBody("Message");
}
mail.setTo(new String[] {to});
if (attachements != null) {
for (String attachement : attachements) {
mail.addAttachment(attachement);
}
}
return mail.send();
}
这是在上述函数中使用的完整的 Mail
类
import java.io.File;
import java.util.Date;
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.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 Mail extends javax.mail.Authenticator {
private String user;
private String password;
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 String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String[] getTo() {
return to;
}
public void setTo(String[] to) {
this.to = to;
}
public String getFrom() {
return from;
}
public void setFrom(String from) {
this.from = from;
}
public String getHost() {
return host;
}
public void setHost(String host) {
this.host = host;
}
public String getSubject() {
return subject;
}
public void setSubject(String subject) {
this.subject = subject;
}
public Multipart getMultipart() {
return multipart;
}
public void setMultipart(Multipart multipart) {
this.multipart = multipart;
}
public Mail() {
host = "smtp.googlemail.com"; // default smtp server
port = "465"; // default smtp port
sport = "465"; // default socketfactory port
user = ""; // username
password = ""; // password
from = ""; // email sent from
subject = ""; // email subject
body = ""; // 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) {
this();
this.user = user;
password = pass;
}
public boolean send() throws Exception {
Properties props = _setProperties();
if (!user.equals("") && !password.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);
// Put parts in message
msg.setContent(multipart);
// send email
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(new File(filename).getName());
multipart.addBodyPart(messageBodyPart);
}
@Override
public PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(user, password);
}
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");
return props;
}
// the getters and setters
public String getBody() {
return body;
}
public void setBody(String _body) {
this.body = _body;
}
}
注意:
- 您的类路径中需要
activation.jar
和 mail.jar
,即 JavaMail API
- 代码应该从
AsynchTask
或专用的 Thread
运行