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
用Kotlin以编程方式发送电子邮件。
简单的电子邮件发送,没有其他所有功能(如附件)。 TLS始终开启 只有1 gradle电子邮件依赖也需要。
我还发现下面这些邮件POP服务非常有用:
https://support.office.com/en-gb/article/pop-and-imap-email-settings-for-outlook-8361e398-8af4-4e97-b147-6c6c4ac95353
使用方法:
val auth = EmailService.UserPassAuthenticator("you@gmail.com", "yourPassword")
val to = listOf(InternetAddress("to@email.com"))
val from = InternetAddress("you@gmail.com")
val email = EmailService.Email(auth, to, from, "Test Subject", "Hello Body World")
val emailService = EmailService("smtp.gmail.com", 465)
GlobalScope.launch { // or however you do background threads
emailService.send(email)
}
代码:
import java.util.*
import javax.mail.*
import javax.mail.internet.InternetAddress
import javax.mail.internet.MimeBodyPart
import javax.mail.internet.MimeMessage
import javax.mail.internet.MimeMultipart
class EmailService(private val server: String, private val port: Int) {
data class Email(
val auth: Authenticator,
val toList: List<InternetAddress>,
val from: Address,
val subject: String,
val body: String
)
class UserPassAuthenticator(private val username: String, private val password: String) : Authenticator() {
override fun getPasswordAuthentication(): PasswordAuthentication {
return PasswordAuthentication(username, password)
}
}
fun send(email: Email) {
val props = Properties()
props["mail.smtp.auth"] = "true"
props["mail.user"] = email.from
props["mail.smtp.host"] = server
props["mail.smtp.port"] = port
props["mail.smtp.starttls.enable"] = "true"
props["mail.smtp.ssl.trust"] = server
props["mail.mime.charset"] = "UTF-8"
val msg: Message = MimeMessage(Session.getDefaultInstance(props, email.auth))
msg.setFrom(email.from)
msg.sentDate = Calendar.getInstance().time
msg.setRecipients(Message.RecipientType.TO, email.toList.toTypedArray())
// msg.setRecipients(Message.RecipientType.CC, email.ccList.toTypedArray())
// msg.setRecipients(Message.RecipientType.BCC, email.bccList.toTypedArray())
msg.replyTo = arrayOf(email.from)
msg.addHeader("X-Mailer", CLIENT_NAME)
msg.addHeader("Precedence", "bulk")
msg.subject = email.subject
msg.setContent(MimeMultipart().apply {
addBodyPart(MimeBodyPart().apply {
setText(email.body, "iso-8859-1")
//setContent(email.htmlBody, "text/html; charset=UTF-8")
})
})
Transport.send(msg)
}
companion object {
const val CLIENT_NAME = "Android StackOverflow programmatic email"
}
}
Gradle:
dependencies {
implementation 'com.sun.mail:android-mail:1.6.4'
implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.3"
}
安卓清单:
<uses-permission android:name="android.permission.INTERNET" />
其他回答
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
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!
其他答案中提供的所有代码都是正确的,运行正常,但有点混乱,所以我决定发布一个库(尽管仍在开发中),以更简单的方式使用它:AndroidMail。
你只需要创建一个MailSender,构建一个邮件并发送它(已经在后台处理了一个AsyncTask)。
MailSender mailSender = new MailSender(email, password);
Mail.MailBuilder builder = new Mail.MailBuilder();
Mail mail = builder
.setSender(senderMail)
.addRecipient(new Recipient(recipient))
.setText("Hello")
.build();
mailSender.sendMail(mail);
您可以收到通知的电子邮件发送,它还支持不同的收件人类型(TO,抄送和密件抄送),附件和html:
MailSender mailSender = new MailSender(email, password);
Mail.MailBuilder builder = new Mail.MailBuilder();
Mail mail = builder
.setSender(senderMail)
.addRecipient(new Recipient(recipient))
.addRecipient(new Recipient(Recipient.TYPE.CC, recipientCC))
.setText("Hello")
.setHtml("<h1 style=\"color:red;\">Hello</h1>")
.addAttachment(new Attachment(filePath, fileName))
.build();
mailSender.sendMail(mail, new MailSender.OnMailSentListener() {
@Override
public void onSuccess() {
// mail sent!
}
@Override
public void onError(Exception error) {
// something bad happened :(
}
});
您可以通过Gradle或Maven获取:
compile 'it.enricocandino:androidmail:1.0.0-SNAPSHOT'
如果你有任何问题,请告诉我!:)
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