我试图在Android中创建一个邮件发送应用程序。
如果我使用:
Intent emailIntent = new Intent(android.content.Intent.ACTION_SEND);
这将启动内置的Android应用程序;我试图发送邮件按钮点击直接不使用这个应用程序。
我试图在Android中创建一个邮件发送应用程序。
如果我使用:
Intent emailIntent = new Intent(android.content.Intent.ACTION_SEND);
这将启动内置的Android应用程序;我试图发送邮件按钮点击直接不使用这个应用程序。
当前回答
这里有很多解决方案。然而,我认为我们必须改变GMail的配置,以允许从不太安全的设备访问。转到下面的链接并启用它。这对我很有用
https://myaccount.google.com/lesssecureapps?pli=1
其他回答
谢谢你提供的宝贵信息。代码运行正常。我也可以通过添加以下代码添加附件。
private Multipart _multipart;
_multipart = new MimeMultipart();
public void addAttachment(String filename,String subject) throws Exception {
BodyPart messageBodyPart = new MimeBodyPart();
DataSource source = new FileDataSource(filename);
messageBodyPart.setDataHandler(new DataHandler(source));
messageBodyPart.setFileName(filename);
_multipart.addBodyPart(messageBodyPart);
BodyPart messageBodyPart2 = new MimeBodyPart();
messageBodyPart2.setText(subject);
_multipart.addBodyPart(messageBodyPart2);
}
message.setContent(_multipart);
我为其他需要帮助的人找到了一个更短的选择。代码是:
package com.example.mail;
import java.util.Properties;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
public class SendMailTLS {
public static void main(String[] args) {
final String username = "username@gmail.com";
final String password = "password";
Properties props = new Properties();
props.put("mail.smtp.auth", "true");
props.put("mail.smtp.starttls.enable", "true");
props.put("mail.smtp.host", "smtp.gmail.com");
props.put("mail.smtp.port", "587");
Session session = Session.getInstance(props,
new javax.mail.Authenticator() {
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(username, password);
}
});
try {
Message message = new MimeMessage(session);
message.setFrom(new InternetAddress("from-email@gmail.com"));
message.setRecipients(Message.RecipientType.TO,
InternetAddress.parse("to-email@gmail.com"));
message.setSubject("Testing Subject");
message.setText("Dear Mail Crawler,"
+ "\n\n No spam to my email, please!");
Transport.send(message);
System.out.println("Done");
} catch (MessagingException e) {
throw new RuntimeException(e);
}
}
}
来源:通过JavaMail API发送电子邮件
希望这能有所帮助!好运!
SMTP
使用SMTP是一种方法,其他方法已经指出了如何做到这一点。请注意,在这样做的时候,您完全绕过了内置的邮件应用程序,并且必须提供SMTP服务器的地址、该服务器的用户名和密码,可以在代码中静态地提供,也可以从用户那里查询。
HTTP
另一种方法是使用一个简单的服务器端脚本,比如php,它接受一些URL参数并使用它们发送邮件。这样,您只需要从设备发出一个HTTP请求(使用内置库很容易实现),而不需要在设备上存储SMTP登录数据。与直接使用SMTP相比,这是一种更间接的方式,但由于从PHP发出HTTP请求和发送邮件非常容易,因此它甚至可能比直接方式更简单。
邮件应用程序
如果邮件将从用户已经在手机上注册的默认邮件帐户发送,则必须采用其他方法。如果你有足够的时间和经验,你可能想要检查Android Email应用程序的源代码,看看它是否提供了一些不需要用户交互就可以发送邮件的入口点(我不知道,但也许有一个)。
也许你甚至可以找到一种方法来查询用户的帐户详细信息(这样你就可以将它们用于SMTP),尽管我高度怀疑这是可能的,因为这将是一个巨大的安全风险,而Android是建立得相当安全。
为了帮助那些获得网络主线程异常与SDK目标>9。这是使用droopie的代码上面,但将类似于任何工作。
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
android.os.NetworkOnMainThreadException
您可以如下所示使用AsyncTask
public void onClickMail(View view) {
new SendEmailAsyncTask().execute();
}
class SendEmailAsyncTask extends AsyncTask <Void, Void, Boolean> {
Mail m = new Mail("from@gmail.com", "my password");
public SendEmailAsyncTask() {
if (BuildConfig.DEBUG) Log.v(SendEmailAsyncTask.class.getName(), "SendEmailAsyncTask()");
String[] toArr = { "to mail@gmail.com"};
m.setTo(toArr);
m.setFrom("from mail@gmail.com");
m.setSubject("Email from Android");
m.setBody("body.");
}
@Override
protected Boolean doInBackground(Void... params) {
if (BuildConfig.DEBUG) Log.v(SendEmailAsyncTask.class.getName(), "doInBackground()");
try {
m.send();
return true;
} catch (AuthenticationFailedException e) {
Log.e(SendEmailAsyncTask.class.getName(), "Bad account details");
e.printStackTrace();
return false;
} catch (MessagingException e) {
Log.e(SendEmailAsyncTask.class.getName(), m.getTo(null) + "failed");
e.printStackTrace();
return false;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
Add jar files mail.jar,activation.jar,additionnal.jar
String sub="Thank you for your online registration" ;
Mail m = new Mail("emailid", "password");
String[] toArr = {"ekkatrainfo@gmail.com",sEmailId};
m.setFrom("ekkatrainfo@gmail.com");
m.setTo(toArr);
m.setSubject(sub);
m.setBody(msg);
try{
if(m.send()) {
} else {
}
} catch(Exception e) {
Log.e("MailApp", "Could not send email", e);
}
package com.example.ekktra;
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 _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
_pass = ""; // 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();
_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);
// 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(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");
return props;
}
// the getters and setters
public String getBody() {
return _body;
}
public void setBody(String _body) {
this._body = _body;
}
public void setTo(String[] toArr) {
// TODO Auto-generated method stub
this._to=toArr;
}
public void setFrom(String string) {
// TODO Auto-generated method stub
this._from=string;
}
public void setSubject(String string) {
// TODO Auto-generated method stub
this._subject=string;
}
}