j2me實現手機通訊錄的備份與還原

現在用的手機用了4年半了，其中摔過n次，但是從沒壞過，現在還活的好好的。最近想換個windows系統版本的手機。換手機前，先再折騰折騰這個老手機吧，老手機手機只支援j2me。就用它備份下通訊錄吧。備份手機通訊錄的步驟分以下幾步

1.通過j2me的pim相關函數把通訊錄內容存入字串中

        String name="";
        String tel="";
        String dis="";
        PIM pim = PIM.getInstance();
        ContactList contactList = null;
        Enumeration em = null;
        try {
            contactList = (ContactList) pim.openPIMList(PIM.CONTACT_LIST, PIM.READ_WRITE);
            em=contactList.items();
            while(em.hasMoreElements())
            {
                Contact contact=(Contact)em.nextElement();
                name=contact.getString(Contact.FORMATTED_NAME, 0);
                dis=dis+name+",";
                tel=contact.getString(Contact.TEL, 0);
                dis=dis+tel+"/n";
            }
        } catch (PIMException ex) {
            ex.printStackTrace();
        }

2.通過j2me的FileConnection 完成通訊錄的儲存工作

        FileConnection fc;
        try {
            String elem = null;
            Enumeration e = FileSystemRegistry.listRoots();
            while (e.hasMoreElements()) {
                elem = e.nextElement().toString();
            }
            System.out.println("::"+elem);
            //fc = (FileConnection) Connector.open("file://localhost/" + elem+"/a.txt");
            fc = (FileConnection) Connector.open("file://localhost/c/mobile/video/a.txt");
            if (!fc.exists()) {
                fc.create();
                OutputStream is = fc.openOutputStream();
                is.write(dis.getBytes("UTF-8"), 0, dis.getBytes("UTF-8").length);
                is.flush();
                is.close();
            }
        } catch (Exception e) {
            t.setString(e.toString());
        }

這樣通訊錄的內容已經儲存到   a.txt  ，把它存入電腦就完成了儲存工作

這樣如果換了新手機就直接可以用a.txt 檔案來還原通訊錄了

還原的時候只需通過FileConnection 讀取備份的檔案，還原到手機通訊錄就ok了 主要代碼如下

        FileConnection fc;
        String s="";
        try {
            String elem = null;
            Enumeration e = FileSystemRegistry.listRoots();
            while (e.hasMoreElements()) {
                elem = e.nextElement().toString();
            }
            System.out.println("::"+elem);
            //fc = (FileConnection) Connector.open("file://localhost/" + elem+"/a.txt");
            fc = (FileConnection) Connector.open("file://localhost/c/mobile/video/a.txt");
            if (!fc.exists())
            {
                throw new IOException("File does not exists");
            }
            if (fc.exists())
            {
                InputStream  is = fc.openInputStream();
                byte[] b = new byte[1024*5];
                int length = is.read(b, 0, 1024*5);
                is.close();
                fc.close();
                if(length > 0)
                {
                    s=new String(b, 0,1024*5,"UTF-8");
                    String [] str=split(s,"/n");
                    for(int i=0;i<str.length;i++)
                    {
                        if(str[i].indexOf(",")>=0)
                         {
                             String [] NameAndTel=split(str[i],",");
                             PIM pim = PIM.getInstance();
                             ContactList  contactList = (ContactList) pim.openPIMList(PIM.CONTACT_LIST, PIM.READ_WRITE);
                             PIMItem item = null;
                             item = ((ContactList) contactList).createContact ();
                             item.addString(Contact.FORMATTED_NAME, PIMItem.ATTR_NONE, NameAndTel[0]);
                             item.addString (Contact.TEL, PIMItem.ATTR_NONE, NameAndTel[1]);
                             item.commit();
                         }
                    }

                }
            }
        } catch (Exception e) {
            t.setString(e.toString());
        }

源碼下載  http://download.csdn.net/source/2763205

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