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
对于那些想在2020年与Kotlin一起使用JavaMail的人:
首先:将这些依赖项添加到构建中。gradle文件(官方JavaMail Maven依赖项)
实现“com.sun.mail: android-mail: 1.6.5” 实现“com.sun.mail: android激活:1.6.5”
实现“org.bouncycastle: bcmail-jdk15on: 1.65” 实现“org.jetbrains.kotlinx: kotlinx-coroutines-core: 1.3.7” 实现“org.jetbrains.kotlinx: kotlinx-coroutines-android: 1.3.7”
BouncyCastle是出于安全考虑。
第二步:将这些权限添加到AndroidManifest.xml中
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
第三:当使用SMTP时,创建一个配置文件
object Config {
const val EMAIL_FROM = "You_Sender_Email@email.com"
const val PASS_FROM = "Your_Sender_Password"
const val EMAIL_TO = "Your_Destination_Email@email.com"
}
第四:创建Mailer对象
object Mailer {
init {
Security.addProvider(BouncyCastleProvider())
}
private fun props(): Properties = Properties().also {
// Smtp server
it["mail.smtp.host"] = "smtp.gmail.com"
// Change when necessary
it["mail.smtp.auth"] = "true"
it["mail.smtp.port"] = "465"
// Easy and fast way to enable ssl in JavaMail
it["mail.smtp.ssl.enable"] = true
}
// Dont ever use "getDefaultInstance" like other examples do!
private fun session(emailFrom: String, emailPass: String): Session = Session.getInstance(props(), object : Authenticator() {
override fun getPasswordAuthentication(): PasswordAuthentication {
return PasswordAuthentication(emailFrom, emailPass)
}
})
private fun builtMessage(firstName: String, surName: String): String {
return """
<b>Name:</b> $firstName <br/>
<b>Surname:</b> $surName <br/>
""".trimIndent()
}
private fun builtSubject(issue: String, firstName: String, surName: String):String {
return """
$issue | $firstName, $surName
""".trimIndent()
}
private fun sendMessageTo(emailFrom: String, session: Session, message: String, subject: String) {
try {
MimeMessage(session).let { mime ->
mime.setFrom(InternetAddress(emailFrom))
// Adding receiver
mime.addRecipient(Message.RecipientType.TO, InternetAddress(Config.EMAIL_TO))
// Adding subject
mime.subject = subject
// Adding message
mime.setText(message)
// Set Content of Message to Html if needed
mime.setContent(message, "text/html")
// send mail
Transport.send(mime)
}
} catch (e: MessagingException) {
Log.e("","") // Or use timber, it really doesn't matter
}
}
fun sendMail(firstName: String, surName: String) {
// Open a session
val session = session(Config.EMAIL_FROM, Config.PASSWORD_FROM)
// Create a message
val message = builtMessage(firstName, surName)
// Create subject
val subject = builtSubject(firstName, surName)
// Send Email
CoroutineScope(Dispatchers.IO).launch { sendMessageTo(Config.EMAIL_FROM, session, message, subject) }
}
Note
If you want a more secure way to send your email (and you want a more secure way!), use http as mentioned in the solutions before (I will maybe add it later in this answer) You have to properly check, if the users phone has internet access, otherwise the app will crash. When using gmail, enable "less secure apps" (this will not work, when you gmail has two factors enabled) https://myaccount.google.com/lesssecureapps?pli=1 Some credits belong to: https://medium.com/@chetan.garg36/android-send-mails-not-intent-642d2a71d2ee (he used RxJava for his solution)
其他回答
我试着用@Vinayak B提交的代码。然而,我得到一个错误说:没有提供smtp
我在这里创建了一个新问题,提供了更多信息
我终于自己修好了。我得用另一个邮件罐 我必须确保我的“不太安全的应用程序访问权限”被打开。
我希望这能帮助那些有同样问题的人。这样做后,这段代码也可以在谷歌玻璃上工作。
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" />
对于那些想在2020年与Kotlin一起使用JavaMail的人:
首先:将这些依赖项添加到构建中。gradle文件(官方JavaMail Maven依赖项)
实现“com.sun.mail: android-mail: 1.6.5” 实现“com.sun.mail: android激活:1.6.5”
实现“org.bouncycastle: bcmail-jdk15on: 1.65” 实现“org.jetbrains.kotlinx: kotlinx-coroutines-core: 1.3.7” 实现“org.jetbrains.kotlinx: kotlinx-coroutines-android: 1.3.7”
BouncyCastle是出于安全考虑。
第二步:将这些权限添加到AndroidManifest.xml中
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
第三:当使用SMTP时,创建一个配置文件
object Config {
const val EMAIL_FROM = "You_Sender_Email@email.com"
const val PASS_FROM = "Your_Sender_Password"
const val EMAIL_TO = "Your_Destination_Email@email.com"
}
第四:创建Mailer对象
object Mailer {
init {
Security.addProvider(BouncyCastleProvider())
}
private fun props(): Properties = Properties().also {
// Smtp server
it["mail.smtp.host"] = "smtp.gmail.com"
// Change when necessary
it["mail.smtp.auth"] = "true"
it["mail.smtp.port"] = "465"
// Easy and fast way to enable ssl in JavaMail
it["mail.smtp.ssl.enable"] = true
}
// Dont ever use "getDefaultInstance" like other examples do!
private fun session(emailFrom: String, emailPass: String): Session = Session.getInstance(props(), object : Authenticator() {
override fun getPasswordAuthentication(): PasswordAuthentication {
return PasswordAuthentication(emailFrom, emailPass)
}
})
private fun builtMessage(firstName: String, surName: String): String {
return """
<b>Name:</b> $firstName <br/>
<b>Surname:</b> $surName <br/>
""".trimIndent()
}
private fun builtSubject(issue: String, firstName: String, surName: String):String {
return """
$issue | $firstName, $surName
""".trimIndent()
}
private fun sendMessageTo(emailFrom: String, session: Session, message: String, subject: String) {
try {
MimeMessage(session).let { mime ->
mime.setFrom(InternetAddress(emailFrom))
// Adding receiver
mime.addRecipient(Message.RecipientType.TO, InternetAddress(Config.EMAIL_TO))
// Adding subject
mime.subject = subject
// Adding message
mime.setText(message)
// Set Content of Message to Html if needed
mime.setContent(message, "text/html")
// send mail
Transport.send(mime)
}
} catch (e: MessagingException) {
Log.e("","") // Or use timber, it really doesn't matter
}
}
fun sendMail(firstName: String, surName: String) {
// Open a session
val session = session(Config.EMAIL_FROM, Config.PASSWORD_FROM)
// Create a message
val message = builtMessage(firstName, surName)
// Create subject
val subject = builtSubject(firstName, surName)
// Send Email
CoroutineScope(Dispatchers.IO).launch { sendMessageTo(Config.EMAIL_FROM, session, message, subject) }
}
Note
If you want a more secure way to send your email (and you want a more secure way!), use http as mentioned in the solutions before (I will maybe add it later in this answer) You have to properly check, if the users phone has internet access, otherwise the app will crash. When using gmail, enable "less secure apps" (this will not work, when you gmail has two factors enabled) https://myaccount.google.com/lesssecureapps?pli=1 Some credits belong to: https://medium.com/@chetan.garg36/android-send-mails-not-intent-642d2a71d2ee (he used RxJava for his solution)
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
这里是一个Alt版本,也适用于我,并有附件(已经张贴在上面,但完整的版本不像源链接,人们张贴他们不能让它工作,因为它缺少数据)
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;
}
// more of the getters and setters …..
}
在活动中调用它…
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.main);
Button addImage = (Button) findViewById(R.id.send_email);
addImage.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
Mail m = new Mail("gmailusername@gmail.com", "password");
String[] toArr = {"bla@bla.com", "lala@lala.com"};
m.setTo(toArr);
m.setFrom("wooo@wooo.com");
m.setSubject("This is an email sent using my Mail JavaMail wrapper from an Android device.");
m.setBody("Email body.");
try {
m.addAttachment("/sdcard/filelocation");
if(m.send()) {
Toast.makeText(MailApp.this, "Email was sent successfully.", Toast.LENGTH_LONG).show();
} else {
Toast.makeText(MailApp.this, "Email was not sent.", Toast.LENGTH_LONG).show();
}
} catch(Exception e) {
//Toast.makeText(MailApp.this, "There was a problem sending the email.", Toast.LENGTH_LONG).show();
Log.e("MailApp", "Could not send email", e);
}
}
});
}