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
用于发送带有附件的邮件..
public class SendAttachment{
public static void main(String [] args){
//to address
String to="abc@abc.com";//change accordingly
//from address
final String user="efg@efg.com";//change accordingly
final String password="password";//change accordingly
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);
//1) get the session object
Properties properties = System.getProperties();
properties.put("mail.smtp.port", "465");
properties.put("mail.smtp.host", "smtp.gmail.com");
properties.put("mail.smtp.socketFactory.port", "465");
properties.put("mail.smtp.socketFactory.class",
"javax.net.ssl.SSLSocketFactory");
properties.put("mail.smtp.auth", "true");
properties.put("mail.smtp.port", "465");
Session session = Session.getDefaultInstance(properties,
new javax.mail.Authenticator() {
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(user,password);
}
});
//2) compose message
try{
MimeMessage message = new MimeMessage(session);
message.setFrom(new InternetAddress(user));
message.addRecipient(Message.RecipientType.TO,new InternetAddress(to));
message.setSubject("Hii");
//3) create MimeBodyPart object and set your message content
BodyPart messageBodyPart1 = new MimeBodyPart();
messageBodyPart1.setText("How is This");
//4) create new MimeBodyPart object and set DataHandler object to this object
MimeBodyPart messageBodyPart2 = new MimeBodyPart();
//Location of file to be attached
String filename = Environment.getExternalStorageDirectory().getPath()+"/R2832.zip";//change accordingly
DataSource source = new FileDataSource(filename);
messageBodyPart2.setDataHandler(new DataHandler(source));
messageBodyPart2.setFileName("Hello");
//5) create Multipart object and add MimeBodyPart objects to this object
Multipart multipart = new MimeMultipart();
multipart.addBodyPart(messageBodyPart1);
multipart.addBodyPart(messageBodyPart2);
//6) set the multiplart object to the message object
message.setContent(multipart );
//7) send message
Transport.send(message);
System.out.println("MESSAGE SENT....");
}catch (MessagingException ex) {ex.printStackTrace();}
}
}
其他回答
package io.formics.tourguide
import android.annotation.SuppressLint
import android.content.Intent
import android.net.Credentials
import android.net.Uri
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.util.Log
import android.widget.Toast
import kotlinx.android.synthetic.main.activity_feedback.*
import org.jetbrains.annotations.Async
import java.lang.Exception
import java.util.Properties;
import javax.activation.DataHandler;
import javax.activation.FileDataSource
import javax.mail.*
import javax.mail.internet.*
class FeedbackActivity : AppCompatActivity() {
val props = Properties()
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_feedback)
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");
btnSendEmail.setOnClickListener {
Thread {
try {
sendEmail()
// Your implementation
} catch (ex: Exception) {
ex.printStackTrace()
}
}.start()
}
}
private fun sendEmail() {
try {
val session = Session.getInstance(props,
object : javax.mail.Authenticator() {
//Authenticating the password
override fun getPasswordAuthentication(): javax.mail.PasswordAuthentication {
return PasswordAuthentication("abc@xyz.com", "password")
}
})
val message = MimeMessage(session);
message.setFrom(InternetAddress("abc@xyz.com"));
message.setRecipients(
Message.RecipientType.TO,
InternetAddress.parse(editCC.text.toString())
)
message.subject = editSubject.text.toString()
message.setText(
"Dear Mail Crawler,"
+ "\n\n No spam to my email, please!"
);
//val messageBodyPart = MimeBodyPart();
//val multipart = MimeMultipart();
//val file = "path of file to be attached";
// val fileName = "attachmentName"
// val source = FileDataSource(file);
//messageBodyPart.setDataHandler(DataHandler(source));
//messageBodyPart.setFileName(fileName);
//multipart.addBodyPart(messageBodyPart);
//message.setContent(multipart);
Transport.send(message);
System.out.println("Done");
} catch (e: MessagingException) {
throw RuntimeException(e);
}
}
}
您可以使用JavaMail API来处理电子邮件任务。JavaMail API可以在JavaEE包中获得，它的jar可以下载。遗憾的是，它不能直接在Android应用程序中使用，因为它使用的AWT组件在Android中完全不兼容。
你可以在以下位置找到JavaMail的Android端口: http://code.google.com/p/javamail-android/
将jar添加到应用程序并使用SMTP方法
用于发送带有附件的邮件..
public class SendAttachment{
public static void main(String [] args){
//to address
String to="abc@abc.com";//change accordingly
//from address
final String user="efg@efg.com";//change accordingly
final String password="password";//change accordingly
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);
//1) get the session object
Properties properties = System.getProperties();
properties.put("mail.smtp.port", "465");
properties.put("mail.smtp.host", "smtp.gmail.com");
properties.put("mail.smtp.socketFactory.port", "465");
properties.put("mail.smtp.socketFactory.class",
"javax.net.ssl.SSLSocketFactory");
properties.put("mail.smtp.auth", "true");
properties.put("mail.smtp.port", "465");
Session session = Session.getDefaultInstance(properties,
new javax.mail.Authenticator() {
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(user,password);
}
});
//2) compose message
try{
MimeMessage message = new MimeMessage(session);
message.setFrom(new InternetAddress(user));
message.addRecipient(Message.RecipientType.TO,new InternetAddress(to));
message.setSubject("Hii");
//3) create MimeBodyPart object and set your message content
BodyPart messageBodyPart1 = new MimeBodyPart();
messageBodyPart1.setText("How is This");
//4) create new MimeBodyPart object and set DataHandler object to this object
MimeBodyPart messageBodyPart2 = new MimeBodyPart();
//Location of file to be attached
String filename = Environment.getExternalStorageDirectory().getPath()+"/R2832.zip";//change accordingly
DataSource source = new FileDataSource(filename);
messageBodyPart2.setDataHandler(new DataHandler(source));
messageBodyPart2.setFileName("Hello");
//5) create Multipart object and add MimeBodyPart objects to this object
Multipart multipart = new MimeMultipart();
multipart.addBodyPart(messageBodyPart1);
multipart.addBodyPart(messageBodyPart2);
//6) set the multiplart object to the message object
message.setContent(multipart );
//7) send message
Transport.send(message);
System.out.println("MESSAGE SENT....");
}catch (MessagingException ex) {ex.printStackTrace();}
}
}
那些正在获得ClassDefNotFoundError的人尝试移动这三个jar文件到你的项目的lib文件夹，它为我工作!!
无法连接到SMTP主机: Smtp.gmail.com，端口:465
在清单中添加这一行:
<uses-permission android:name="android.permission.INTERNET" />
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