【Android开发】Android开发邮箱APP（一）

对于邮件这方面，JavaMail已经做的不错了，利用java做安卓邮箱也就很简单：

首先需要三个jar包

1.mail.jar

2.activation.jar

3.additionnal.jar

那么下面开始讲解怎么收发邮件:

一、收邮件

我们做一个简单的手动接收邮件箱中的邮件，（自动同步需要做service,这里暂时不做探讨，原理是一样的）：

下面是工具类：

ReciveOneMail 

package com.odoo.addons.mail.tools;

import android.annotation.SuppressLint;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.text.SimpleDateFormat;
import java.util.Date;

import javax.mail.BodyPart;
import javax.mail.Flags;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.Part;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeUtility;

/**  * Created by officer on 2015/10/15.  */ public class ReciveOneMail {
    private MimeMessage mimeMessage = null;
    private String saveAttachPath = ""; // 附件下载后的存放目录
    private StringBuffer bodytext = new StringBuffer();// 存放邮件内容
    private String dateformat = "yy-MM-dd HH:mm"; // 默认的日前显示格式

    public ReciveOneMail(MimeMessage mimeMessage) {
        this.mimeMessage = mimeMessage;
    }

    public void setMimeMessage(MimeMessage mimeMessage) {
        this.mimeMessage = mimeMessage;
    }

    /**  * 获得发件人的地址和姓名  */  public String getFrom() throws Exception {
        InternetAddress address[] = (InternetAddress[]) mimeMessage.getFrom();
        String from = address[0].getAddress();
        if (from == null)
            from = "";
        String personal = address[0].getPersonal();
        if (personal == null)
            personal = "";
        String fromaddr = personal + "<" + from + ">";
        return fromaddr;
    }

    /**  * 获得邮件的收件人，抄送，和密送的地址和姓名，根据所传递的参数的不同 "to"----收件人 "cc"---抄送人地址 "bcc"---密送人地址  */  @SuppressLint("DefaultLocale")
    public String getMailAddress(String type) throws Exception {
        String mailaddr = "";
        String addtype = type.toUpperCase();
        InternetAddress[] address = null;
        if (addtype.equals("TO") || addtype.equals("CC")
                || addtype.equals("BCC")) {
            if (addtype.equals("TO")) {
                address = (InternetAddress[]) mimeMessage
                        .getRecipients(Message.RecipientType.TO);
            } else if (addtype.equals("CC")) {
                address = (InternetAddress[]) mimeMessage
                        .getRecipients(Message.RecipientType.CC);
            } else {
                address = (InternetAddress[]) mimeMessage
                        .getRecipients(Message.RecipientType.BCC);
            }
            if (address != null) {
                for (int i = 0; i < address.length; i++) {
                    String email = address[i].getAddress();
                    if (email == null)
                        email = "";
                    else {
                        email = MimeUtility.decodeText(email);
                    }
                    String personal = address[i].getPersonal();
                    if (personal == null)
                        personal = "";
                    else {
                        personal = MimeUtility.decodeText(personal);
                    }
                    String compositeto = personal + "<" + email + ">";
                    mailaddr += "," + compositeto;
                }
                mailaddr = mailaddr.substring(1);
            }
        } else {
            throw new Exception("Error emailaddr type!");
        }
        return mailaddr;
    }

    /**  * 获得邮件主题  */  public String getSubject() throws MessagingException {
        String subject = "";
        try {
            subject = MimeUtility.decodeText(mimeMessage.getSubject());
            if (subject == null)
                subject = "";
        } catch (Exception exce) {
        }
        return subject;
    }

    /**  * 获得邮件发送日期  */  @SuppressLint("SimpleDateFormat")
    public String getSentDate() throws Exception {
        Date sentdate = mimeMessage.getSentDate();
        SimpleDateFormat format = new SimpleDateFormat(dateformat);
        return format.format(sentdate);
    }

    /**  * 获得邮件正文内容  */  public String getBodyText() {
        return bodytext.toString();
    }

    /**  * 解析邮件，把得到的邮件内容保存到一个StringBuffer对象中，解析邮件 主要是根据MimeType类型的不同执行不同的操作，一步一步的解析  */public void getMailContent(Part part) throws Exception {
        String contenttype = part.getContentType();
        int nameindex = contenttype.indexOf("name");
        boolean conname = false;
        if (nameindex != -1)
            conname = true;
        System.out.println("CONTENTTYPE: " + contenttype);
        if (part.isMimeType("text/plain") && !conname) {
            bodytext.append((String) part.getContent());
        } else if (part.isMimeType("text/html") && !conname) {
            bodytext.append((String) part.getContent());
        } else if (part.isMimeType("multipart/*")) {
            Multipart multipart = (Multipart) part.getContent();
            int counts = multipart.getCount();
            for (int i = 0; i < counts; i++) {
                getMailContent(multipart.getBodyPart(i));
            }
        } else if (part.isMimeType("message/rfc822")) {
            getMailContent((Part) part.getContent());
        } else {
        }
    }

    /**  * 判断此邮件是否需要回执，如果需要回执返回"true",否则返回"false"  */  public boolean getReplySign() throws MessagingException {
        boolean replysign = false;
        String needreply[] = mimeMessage
                .getHeader("Disposition-Notification-To");
        if (needreply != null) {
            replysign = true;
        }
        return replysign;
    }

    /**  * 获得此邮件的Message-ID  */  public String getMessageId() throws MessagingException {
        return mimeMessage.getMessageID();
    }

    /**  * 【判断此邮件是否已读，如果未读返回返回false,反之返回true】pop3协议使用时不能判断。  */  public boolean isNew() throws MessagingException {
        boolean isnew = false;//由于isnew设为false所以每次显示的都为未读
        Flags flags = ((Message) mimeMessage).getFlags();
        System.out.println("--------flags-------" + flags);
        Flags.Flag[] flag = flags.getSystemFlags();
        System.out.println("----flag----" + flag);
        System.out.println("flags's length: " + flag.length);
        for (int i = 0; i < flag.length; i++) {
            System.out.println("flag=======" + flag[i]);
            System.out.println("-=-=-=Flags.Flag.SEEN=-=-=-="+Flags.Flag.SEEN);
            if (flag[i] == Flags.Flag.SEEN) {
                isnew = true;
                System.out.println("seen Message.......");
                break;
            }
        }
        return isnew;
    }

    /**  * 判断此邮件是否包含附件  */  @SuppressLint("DefaultLocale")
    public boolean isContainAttach(Part part) throws Exception {
        boolean attachflag = false;
        // String contentType = part.getContentType();
        if (part.isMimeType("multipart/*")) {
            Multipart mp = (Multipart) part.getContent();
            for (int i = 0; i < mp.getCount(); i++) {
                BodyPart mpart = mp.getBodyPart(i);
                String disposition = mpart.getDisposition();
                if ((disposition != null)
                        && ((disposition.equals(Part.ATTACHMENT)) || (disposition
                        .equals(Part.INLINE))))
                    attachflag = true;
                else if (mpart.isMimeType("multipart/*")) {
                    attachflag = isContainAttach((Part) mpart);
                } else {
                    String contype = mpart.getContentType();
                    if (contype.toLowerCase().indexOf("application") != -1)
                        attachflag = true;
                    if (contype.toLowerCase().indexOf("name") != -1)
                        attachflag = true;
                }
            }
        } else if (part.isMimeType("message/rfc822")) {
            attachflag = isContainAttach((Part) part.getContent());
        }
        return attachflag;
    }

    /**  * 【保存附件】  */  @SuppressLint("DefaultLocale")
    public void saveAttachMent(Part part) throws Exception {
        String fileName = "";
        if (part.isMimeType("multipart/*")) {
            Multipart mp = (Multipart) part.getContent();
            for (int i = 0; i < mp.getCount(); i++) {
                BodyPart mpart = mp.getBodyPart(i);//主体部分得到处理
                String disposition = mpart.getDisposition();
                if ((disposition != null)
                        && ((disposition.equals(Part.ATTACHMENT)) || (disposition
                        .equals(Part.INLINE)))) {//ATTACHMENT附件，INLINE嵌入
                    fileName = mpart.getFileName();
                    if (fileName.toLowerCase().indexOf("gb18030") != -1) {
                        fileName = MimeUtility.decodeText(fileName);
                    }
                    saveFile(fileName, mpart.getInputStream());
                } else if (mpart.isMimeType("multipart/*")) {
                    saveAttachMent(mpart);
                } else {
                    fileName = mpart.getFileName();
                    if ((fileName != null)
                            && (fileName.toLowerCase().indexOf("GB18030") != -1)) {
                        fileName = MimeUtility.decodeText(fileName);
                        saveFile(fileName, mpart.getInputStream());
                    }
                }
            }
        } else if (part.isMimeType("message/rfc822")) {
            saveAttachMent((Part) part.getContent());
        }
    }

    /**  * 【设置附件存放路径】  */   public void setAttachPath(String attachpath) {
        this.saveAttachPath = attachpath;
    }

    /**  * 【设置日期显示格式】  */  public void setDateFormat(String format) throws Exception {
        this.dateformat = format;
    }

    /**  * 【获得附件存放路径】  */  public String getAttachPath() {
        return saveAttachPath;
    }

    /**  * 【真正的保存附件到指定目录里】  */  @SuppressLint("DefaultLocale")
    private void saveFile(String fileName, InputStream in) throws Exception {
        String osName = System.getProperty("os.name");
        System.out.println("----fileName----" + fileName);
        // String storedir = getAttachPath();
//      String separator = "";
        if (osName == null)
            osName = "";
        File storefile = new File(File.separator + "mnt" + File.separator  + "sdcard" + File.separator + fileName);

        storefile.createNewFile();
        System.out.println("storefile's path: " + storefile.toString());
//       for(int i=0;storefile.exists();i++){
//       storefile = new File(storedir+separator+fileName+i);
//       }

        BufferedOutputStream bos = null;
        BufferedInputStream bis = null;
        try {
            bos = new BufferedOutputStream(new FileOutputStream(storefile));
            bis = new BufferedInputStream(in);
            int c;
            while ((c = bis.read()) != -1) {
                bos.write(c);
                bos.flush();
            }
        } catch (Exception exception) {
            exception.printStackTrace();
            throw new Exception("文件保存失败!");
        } finally {
            bos.close();
            bis.close();
        }
    }
}

以下是接收的方法

  private SimpleAdapter getMail(int x){

        List<Map<String, Object>> list = new ArrayList<Map<String, Object>>();
        String user = "账号";//邮箱账号  例如：[email protected]
        String password = "密码";   //自己密码
        Properties prop = System.getProperties();
        prop.put("mail.store.protocol", "imap");//这是邮件协议  ＩＭＡＰ
        prop.put("mail.imap.host", "imap.163.com");  //收邮件主机名　以１６３邮箱为例
        Session session = Session.getInstance(prop);
        int total = 0;
        IMAPStore store;
        try {
            store = (IMAPStore) session.getStore("imap");／／协议
            store.connect(user, password);
            IMAPFolder folder = (IMAPFolder) store.getFolder("INBOX");／／指定接收收邮件
            folder.open(Folder.READ_WRITE);

            total = folder.getMessageCount();

            Log.v("mail", "mail account "+total);
           Message[] messages = folder.getMessages();
           if (messages.length > 0) {
                Map<String, Object> map;
                System.out.println("Messages's length: " + messages.length);
                ReciveOneMail pmm = null;
                for (int i = 0; i<10&&x< messages.length; i++,x++) {
                    System.out.println("======================");
                    pmm = new ReciveOneMail((MimeMessage) messages[messages.length-1-x]);
//                    System.out.println("Message " + x + " subject: "
//                            + pmm.getSubject());
                    try {
//                        System.out.println("Message " + x + " sentdate: "
//                                + pmm.getSentDate());
//                        System.out.println("Message " + x + " replysign: "
//                                + pmm.getReplySign());

                        boolean isRead;
                        String read;
                        Flags flags = messages[messages.length-1-x].getFlags();
                        if (flags.contains(Flags.Flag.SEEN)) {

                            isRead = true;
                            read = "已读";
                        } else {

                            isRead = false;
                            read = "未读";
                        }
//                        System.out.println("Message " + x + " hasRead: "
//                                + isRead);
////                        System.out.println("Message " + i
////                                + "  containAttachment: "
////                                + pmm.isContainAttach((Part) messages[i]));
//                        System.out.println("Message " + x + " form: "
//                                + pmm.getFrom());
//                        System.out.println("Message " + x + " to: "
//                                + pmm.getMailAddress("to"));
//                        System.out.println("Message " + x + " cc: "
//                                + pmm.getMailAddress("cc"));
//                        System.out.println("Message " + x+ " bcc: "
//                                + pmm.getMailAddress("bcc"));
                        pmm.getBodyText();
                        pmm.setDateFormat("yy年MM月dd日 HH:mm");
//                        System.out.println("Message " + x + " sentdate: "
//                                + pmm.getSentDate());
//                        System.out.println("Message " + x + " Message-ID: "
//                                + pmm.getMessageId());
//
                        pmm.getMailContent((Part)messages[messages.length-1-x]);
//                        System.out.println("Message " + x
//                                + " bodycontent: \r\n" + pmm.getBodyText());
                        String file_path = File.separator + "mnt"
                                + File.separator + "sdcard" + File.separator;
//                        System.out.println(file_path);
                        pmm.setAttachPath(file_path);
//                        pmm.saveAttachMent((Part) messages[i]);
                        map = new HashMap<String, Object>();
                        map.put("from", pmm.getFrom());
                        map.put("title", pmm.getSubject());
                        map.put("time", pmm.getSentDate());
                        map.put("bodytext", pmm.getBodyText());
                        list.add(map);

                      //  Log.v("mail","------  map "+list.size());
                    } catch (Exception e) {
                        // TODO Auto-generated catch block  e.printStackTrace();
                    }

                }
               adapter = new SimpleAdapter(MailInbox.this,
                       list, R.layout.mail_item, new String[] {
                                "from","title","bodytext", "time" }, new int[] {
                                R.id.mail_item_from,
                                R.id.mail_item_title,
                               R.id.mail_item_bodytext,
                               R.id.mail_item_time  });
                Log.v("mail", "   adapter");


            }
        } catch (javax.mail.NoSuchProviderException e) {
            // TODO Auto-generated catch block  e.printStackTrace();
            return null;
        } catch (MessagingException ex) {
            // TODO Auto-generated catch block  ex.printStackTrace();
            return null;
        }
        return adapter;
    }

最后将获得的Ａｄａｐｔｅｒ放入ListView

那么邮件的收件箱就完成了