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나는 사용자 상호 작용없이 백그라운드에서 이메일을 보내는 안드로이드 응용 프로그램을 만들고 있습니다. 예를 들어 3 개의 .jar 파일을 다운로드했으며 매니페스트 파일에 권한을 추가했습니다. 인터넷. smtp와 Gmail을 사용하여 안드로이드에서 이메일을 보내는 방법
하지만 시스템 디스플레이 오류 누구도 날이 오류 를 해결하는 데 도움이 될 수 있습니다 자사의 전자 메일 응용 프로그램로그 캣
01-13 23:05:20.028: E/MailApp(4357): Could not send email
01-13 23:05:20.028: E/MailApp(4357): android.os.NetworkOnMainThreadException
01-13 23:05:20.028: E/MailApp(4357): at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1133)
01-13 23:05:20.028: E/MailApp(4357): at java.net.InetAddress.lookupHostByName(InetAddress.java:385)
01-13 23:05:20.028: E/MailApp(4357): at java.net.InetAddress.getLocalHost(InetAddress.java:365)
01-13 23:05:20.028: E/MailApp(4357): at javax.mail.internet.InternetAddress.getLocalAddress(InternetAddress.java:517)
01-13 23:05:20.028: E/MailApp(4357): at javax.mail.internet.UniqueValue.getUniqueMessageIDValue(UniqueValue.java:99)
01-13 23:05:20.028: E/MailApp(4357): at javax.mail.internet.MimeMessage.updateMessageID(MimeMessage.java:2054)
01-13 23:05:20.028: E/MailApp(4357): at javax.mail.internet.MimeMessage.updateHeaders(MimeMessage.java:2076)
01-13 23:05:20.028: E/MailApp(4357): at javax.mail.internet.MimeMessage.saveChanges(MimeMessage.java:2042)
01-13 23:05:20.028: E/MailApp(4357): at javax.mail.Transport.send(Transport.java:117)
01-13 23:05:20.028: E/MailApp(4357): at com.devleb.emaildemoinbackground.GMailSender.send(GMailSender.java:105)
01-13 23:05:20.028: E/MailApp(4357): at com.devleb.emaildemoinbackground.MainActivity$1.onClick(MainActivity.java:36)
01-13 23:05:20.028: E/MailApp(4357): at android.view.View.performClick(View.java:4240)
01-13 23:05:20.028: E/MailApp(4357): at android.view.View$PerformClick.run(View.java:17721)
01-13 23:05:20.028: E/MailApp(4357): at android.os.Handler.handleCallback(Handler.java:730)
01-13 23:05:20.028: E/MailApp(4357): at android.os.Handler.dispatchMessage(Handler.java:92)
01-13 23:05:20.028: E/MailApp(4357): at android.os.Looper.loop(Looper.java:137)
01-13 23:05:20.028: E/MailApp(4357): at android.app.ActivityThread.main(ActivityThread.java:5103)
01-13 23:05:20.028: E/MailApp(4357): at java.lang.reflect.Method.invokeNative(Native Method)
01-13 23:05:20.028: E/MailApp(4357): at java.lang.reflect.Method.invoke(Method.java:525)
01-13 23:05:20.028: E/MailApp(4357): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
01-13 23:05:20.028: E/MailApp(4357): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
01-13 23:05:20.028: E/MailApp(4357): at dalvik.system.NativeStart.main(Native Method)
MainActivity.java
package com.devleb.emaildemoinbackground;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.Window;
import android.widget.Button;
import android.widget.Toast;
public class MainActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_main);
Button addImage = (Button) findViewById(R.id.btn);
addImage.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
GMailSender mailsender = new GMailSender("[email protected]", ".........");
String[] toArr = { "[email protected]"};
mailsender.set_to(toArr);
mailsender.set_from("[email protected]");
mailsender.set_subject("This is an email sent using my Mail JavaMail wrapper from an Android device.");
mailsender.setBody("Email body.");
try {
//mailsender.addAttachment("/sdcard/filelocation");
if (mailsender.send()) {
Toast.makeText(MainActivity.this,
"Email was sent successfully.",
Toast.LENGTH_LONG).show();
} else {
Toast.makeText(MainActivity.this, "Email was not sent.",
Toast.LENGTH_LONG).show();
}
} catch (Exception e) {
Log.e("MailApp", "Could not send email", e);
}
}
});
}
}
GmailSender.java
package com.devleb.emaildemoinbackground;
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.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 GMailSender 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 GMailSender() {
_host = "smtp.gmail.com"; // default smtp server
_port = "465"; // default smtp port
_sport = "465"; // default socketfactory port
_user = "[email protected]"; // username
_pass = "..........."; // password
_from = "[email protected]"; // email sent from
_subject = ""; // email subject
_body = "test email message sended!!"; // 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 GMailSender(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 javax.mail.PasswordAuthentication getPasswordAuthentication() {
return new javax.mail.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 String[] get_to() {
return _to;
}
public void set_to(String[] _to) {
this._to = _to;
}
public String get_from() {
return _from;
}
public void set_from(String _from) {
this._from = _from;
}
public String get_subject() {
return _subject;
}
public void set_subject(String _subject) {
this._subject = _subject;
}
}