使用JavaMail API在Android中发送电子邮件,而不使用默认内置应用程序

概述我正在尝试在Android中创建邮件发送应用程序.如果我使用：IntentemailIntent=newIntent(android.content.Intent.ACTION_SEND);这将启动内置的Android应用程序;我正在尝试直接发送邮件,而不使用此应用程序.解决方法:使用Gmail身份验证使用JavaMailAPI在Android中发送电子邮

我正在尝试在Android中创建邮件发送应用程序.

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;我正在尝试直接发送邮件,而不使用此应用程序.

解决方法:

使用Gmail身份验证使用JavaMail API在AndroID中发送电子邮件.

创建示例项目的步骤：

MailSenderActivity.java：

public class MailSenderActivity extends Activity {    @OverrIDe    public voID onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentVIEw(R.layout.main);        final button send = (button) this.findVIEwByID(R.ID.send);        send.setonClickListener(new VIEw.OnClickListener() {            public voID onClick(VIEw v) {                try {                       GMailSender sender = new GMailSender("username@gmail.com", "password");                    sender.sendMail("This is Subject",                               "This is Body",                               "user@gmail.com",                               "user@yahoo.com");                   } catch (Exception e) {                       Log.e("SendMail", e.getMessage(), e);                   }             }        });    }}

GMailSender.java：

public class GMailSender extends javax.mail.Authenticator {       private String mailhost = "smtp.gmail.com";       private String user;       private String password;       private Session session;       static {           Security.addProvIDer(new com.provIDer.JsSEProvIDer());       }      public GMailSender(String user, String password) {           this.user = user;           this.password = password;           PropertIEs props = new PropertIEs();           props.setProperty("mail.transport.protocol", "smtp");           props.setProperty("mail.host", mailhost);           props.put("mail.smtp.auth", "true");           props.put("mail.smtp.port", "465");           props.put("mail.smtp.socketFactory.port", "465");           props.put("mail.smtp.socketFactory.class",                   "javax.net.ssl.SSLSocketFactory");           props.put("mail.smtp.socketFactory.fallback", "false");           props.setProperty("mail.smtp.quitwait", "false");           session = Session.getDefaultInstance(props, this);       }       protected PasswordAuthentication getpasswordAuthentication() {           return new PasswordAuthentication(user, password);       }       public synchronized voID sendMail(String subject, String body, String sender, String recipIEnts) throws Exception {           try{        MimeMessage message = new MimeMessage(session);           DataHandler handler = new DataHandler(new ByteArrayDataSource(body.getBytes(), "text/plain"));           message.setSender(new InternetAddress(sender));           message.setSubject(subject);           message.setDataHandler(handler);           if (recipIEnts.indexOf(',') > 0)               message.setRecipIEnts(Message.RecipIEntType.TO, InternetAddress.parse(recipIEnts));           else              message.setRecipIEnt(Message.RecipIEntType.TO, new InternetAddress(recipIEnts));           Transport.send(message);           }catch(Exception e){        }    }       public class ByteArrayDataSource implements DataSource {           private byte[] data;           private String type;           public ByteArrayDataSource(byte[] data, String type) {               super();               this.data = data;               this.type = type;           }           public ByteArrayDataSource(byte[] data) {               super();               this.data = data;           }           public voID setType(String type) {               this.type = type;           }           public String getContentType() {               if (type == null)                   return "application/octet-stream";               else                  return type;           }           public inputStream getinputStream() throws IOException {               return new ByteArrayinputStream(data);           }           public String getname() {               return "ByteArrayDataSource";           }           public OutputStream getoutputStream() throws IOException {               throw new IOException("Not Supported");           }       }   }  

JsSEProvIDer.java：

/* *  licensed to the Apache Software Foundation (ASF) under one or more *  contributor license agreements.  See the NOTICE file distributed with *  this work for additional information regarding copyright ownership. *  The ASF licenses this file to You under the Apache license, Version 2.0 *  (the "license"); you may not use this file except in compliance with *  the license.  You may obtain a copy of the license at * *     http://www.apache.org/licenses/liCENSE-2.0 * *  Unless required by applicable law or agreed to in writing, software *  distributed under the license is distributed on an "AS IS" BASIS, *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implIEd. *  See the license for the specific language governing permissions and *  limitations under the license. *//** * @author Alexander Y. Kleymenov * @version $Revision$ */import java.security.AccessController;import java.security.ProvIDer;public final class JsSEProvIDer extends ProvIDer {    public JsSEProvIDer() {        super("HarmonyJsSE", 1.0, "Harmony JsSE ProvIDer");        AccessController.doPrivileged(new java.security.PrivilegedAction<VoID>() {            public VoID run() {                put("SSLContext.TLS",                        "org.apache.harmony.xnet.provIDer.Jsse.SSLContextImpl");                put("Alg.Alias.SSLContext.TLSv1", "TLS");                put("KeyManagerFactory.X509",                        "org.apache.harmony.xnet.provIDer.Jsse.KeyManagerFactoryImpl");                put("TrustManagerFactory.X509",                        "org.apache.harmony.xnet.provIDer.Jsse.TrustManagerFactoryImpl");                return null;            }        });    }}

在您的AndroID项目的以下链接中添加3个罐子

> mail.jar
> activation.jar
> additional.jar

Click here – How to add External Jars

并且不要忘记在清单中添加此行：

<uses-permission androID:name="androID.permission.INTERNET" />

只需点击下方链接即可更改安全性较低的应用的帐户访问权
https://www.google.com/settings/security/lesssecureapps

运行该项目并检查收件人邮件帐户中的邮件.
干杯!

附：并且不要忘记你不能从androID中的任何Activity做网络 *** 作.
因此,建议使用AsyncTask或IntentService来避免主线程异常上的网络.

Jar文件：@L_502_6@

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