电话簿开发实例.txt

电话簿开发实例 简单的电话本 代码 但 结构有点乱 主要是没换行 适合新手学习使用

/* * AddrBookMIDlet.java * * Created on 2004年4月9日, 下午12:17 */package ground;import javax.microedition.midlet.*;import javax.microedition.lcdui.*;import javax.microedition.rms.*;import java.io.*;import java.util.Vector;/** * An example MIDlet with simple "Hello" text and an Exit command. * Refer to the startApp, pauseApp, and destroyApp * methods so see how each handles the requested transition. * * @author  Xp * @version */public class AddrBookMIDlet extends MIDlet implements CommandListener {        private Display display;    // The display for this MIDlet    String currentForm = "";    String dbname = "addrbook";        public AddrBookMIDlet() {        display = Display.getDisplay(this);    }        /**     * Start up the Hello MIDlet by creating the TextBox and associating     * the exit command and listener.     */    public void startApp() {        mainForm();    }        /**     * Pause is a no-op since there are no background activities or     * record stores that need to be closed.     */    public void pauseApp() {    }        /**     * Destroy must cleanup everything not handled by the garbage collector.     * In this case there is nothing to cleanup.     */    public void destroyApp(boolean unconditional) {    }            public void mainForm()    {        currentForm = "mainForm";        List l = new List("我的电话本", Choice.IMPLICIT);        l.append("查看所有电话", null);        l.append("新增电话记录", null);        l.append("查找电话记录" ,null);        l.append("退出电话本", null);        l.setCommandListener(this);        display.setCurrent(l);    }        public void listAllForm(String search)  //查看所有电话    {        currentForm = "listAllForm";        //From listForm = new Form("查看所有记录");        AddrBook addrBook = new AddrBook();        List l = new List("查看所有记录", Choice.IMPLICIT);        Command back = new Command("返回", Command.BACK, 0);        Command ok = new Command("查看", Command.OK, 0);        AddrBookVct addrBookVct=new AddrBookVct();        if (search == null)            addrBookVct = listAddrBook(null, 1);        else            addrBookVct = listAddrBook(search, 3);        l.addCommand(back);        l.addCommand(ok);        l.setCommandListener(this);        //addrBook = addrBookVct.get(0);        //addrBook.name.equals("No Name")                        if (addrBookVct.size()==0)        {            Alert a = new Alert("提示", "没有记录",null, null);            a.setTimeout(2000);            display.setCurrent(a);            return;        }        for (int i = 0; i<addrBookVct.size(); i++)        {            l.append(addrBookVct.get(i).name, null);        }        display.setCurrent(l);    }        public void showTelForm(String name)  //查看电话记录详细信息    {        currentForm = "showTelForm";                AddrBookVct addrBookVct = listAddrBook(name, 2);        Command back = new Command("返回", Command.BACK, 0);        Form f = new Form("详细资料");        f.append("姓名：\n");        f.append(addrBookVct.get(0).name + "\n");        f.append("电话号码：\n");        f.append(addrBookVct.get(0).tel + "\n");                f.addCommand(back);        f.setCommandListener(this);        display.setCurrent(f);            }        public void addTelForm()  //新增电话记录    {        currentForm = "addTelForm";        Form addForm = new Form("新增电话记录");        TextField tfName = new TextField("姓名", "", 20, TextField.ANY);        TextField tfTel = new TextField("电话", "", 20, TextField.NUMERIC);        Command back = new Command("返回", Command.BACK, 0);        Command ok = new Command("确定", Command.OK, 0);        //tfTel.getString()        addForm.append(tfName);        addForm.append(tfTel);        addForm.addCommand(ok);        addForm.addCommand(back);        addForm.setCommandListener(this);        display.setCurrent(addForm);    }        public void searchForm()    {        currentForm = "searchForm";        TextBox t = new TextBox("请输入要查找的姓名", "", 20, 0);        Command back = new Command("查找", Command.OK, 0);        Command search = new Command("返回", Command.OK, 0);        t.addCommand(back);        t.addCommand(search);        t.setCommandListener(this);        display.setCurrent(t);    }            /*     * Respond to commands, including exit     * On the exit command, cleanup and notify that the MIDlet has been destroyed.     */    public void commandAction(Command c, Displayable s) {        //MainForm        if (c == List.SELECT_COMMAND && currentForm.equals("mainForm"))        {            List temp = (List) s;            switch (temp.getSelectedIndex())            {                case 0:                    listAllForm(null);                    break;                case 1:                    addTelForm();                    break;                case 2:                    searchForm();                    break;                case 3:                    destroyApp(false);                    //notifyDestroyed();            }        }                //addTelForm        if (currentForm.equals("addTelForm"))        {            if (c.getLabel().equals("确定"))            {                Alert a = new Alert("提示","添加电话记录成功" , null, null);                a.setTimeout(2000);                                Form Temp = (Form) s;                TextField tf1 = (TextField)Temp.get(0);                TextField tf2 = (TextField)Temp.get(1);                //System.out.println(tf1.getString() + " " + tf2.getString());                //添加记录                if (tf1.getString().equals(""))                {                    a.setString("姓名不能为空");                    display.setCurrent(a);                    return;                }                if (tf2.getString().equals(""))                {                    a.setString("电话不能为空");                    display.setCurrent(a);                    return;                }                addAddrBook(tf1.getString(), tf2.getString());                //添加记录完成                display.setCurrent(a);                                tf1.setString("");                tf2.setString("");            }            if (c.getLabel().equals("返回"))            {                mainForm();            }        }                //listAllForm        if (currentForm.equals("listAllForm"))        {            if (c.getLabel().equals("查看"))            {                //System.out.println("ListAllForm show");                List temp = (List) s;                //System.out.println(temp.getString(temp.getSelectedIndex()));                showTelForm(temp.getString(temp.getSelectedIndex()));            }            if (c.getLabel().equals("返回"))            {                mainForm();            }        }                //showTelForm        if (currentForm.equals("showTelForm"))        {            if (c.getLabel().equals("返回"))            {                mainForm();            }        }                //searchForm        if (currentForm.equals("searchForm"))        {            if (c.getLabel().equals("返回"))            {                mainForm();            }            if (c.getLabel().equals("查找"))            {                TextBox temp = (TextBox)s;                //System.out.println(temp.getString());                listAllForm(temp.getString());            }                    }    }        public RecordStore openRSAnyway(String dbname)    {        RecordStore rs = null;                if (dbname.length()>32)            return null;        try        {            rs = RecordStore.openRecordStore(dbname, true);            return rs;        }        catch(Exception e)        {            return null;        }    }        public void addAddrBook(String name, String tel)   //写记录    {        FriendData data = new FriendData();        data.name = name;        data.tel = tel;        byte[] temp = data.encode();                RecordStore rs = openRSAnyway(dbname);                if (rs == null)        {            System.out.println("RecordStore is null");            return;        }        else        {            try            {                rs.addRecord(temp, 0, temp.length);                rs.closeRecordStore();            }            catch(Exception e)            {            }        }    }        public AddrBookVct listAddrBook(String listName, int Type)    {        //Type 1: 查看所有        //     2：完全彼配查找        //     3：模糊查找                RecordStore rs = openRSAnyway(dbname);        AddrBookVct addrBookVct = new AddrBookVct();        AddrBook addrBook = new AddrBook();        int i = 0;        if (rs == null)        {            System.out.println("ListAddrBook rs is null");        }        else        {            try            {                RecordEnumeration re = rs.enumerateRecords(null, null, false);                                FriendData data = new FriendData();                                if (re.numRecords() == 0)                {                    addrBook.name = "No Name";                    addrBook.tel = "No Tel";                    addrBookVct.add(addrBook);                    return addrBookVct;                }                                while (re.hasNextElement())                {                    byte temp[] = re.nextRecord();                    data.decode(temp);                    addrBook.rsid = i++;                    addrBook.name = data.name;                    addrBook.tel = data.tel;                    //System.out.println("List i:" + i + " name:" + data.name);                                        switch (Type)                    {                        case 1:  //查看所有                            addrBookVct.add(new AddrBook((String)data.name, (String)data.tel));                            break;                        case 2:  //完全彼配查找                            if (data.name.equals(listName))                            {                                addrBookVct.add(new AddrBook((String)data.name, (String)data.tel));                            }                            break;                        case 3:  //模糊查找                            String s = data.name.toUpperCase();                            int search_i=s.indexOf(listName.toUpperCase());                            if (search_i>=0)                            {                                System.out.println("DATA Name:" + data.name);                                addrBookVct.add(new AddrBook((String)data.name, (String)data.tel));                            }                            System.out.println("search_i:"+ search_i +" DATA Name:" + data.name);                            break;                    }                                    }            }catch(Exception e)            {                System.out.println("listAddrBook is Error");            }        }        /*System.out.println("TEST");        for (int j=0; j<addrBookVct.size(); j++)            System.out.println("J:" + j + "Name:" + addrBookVct.get(j).name);*/        return addrBookVct;    }           class FriendData{    String name;    String tel;            public FriendData()    {        name = "No Name";        tel = "No Tel";    }            public byte[] encode()    {         byte[] result = null;         try         {             ByteArrayOutputStream bos = new ByteArrayOutputStream();             DataOutputStream dos = new DataOutputStream(bos);             dos.writeUTF(name);             dos.writeUTF(tel);             result = bos.toByteArray();             dos.close();             bos.close();         }         catch(Exception e)         {         }         return result;    }            public void decode(byte[] data)    {         try         {              ByteArrayInputStream bis = new ByteArrayInputStream(data);              DataInputStream dis = new DataInputStream(bis);              name = dis.readUTF();              tel = dis.readUTF();              dis.close();              bis.close();          }catch(Exception e)          {          }     } }class AddrBook{    int rsid;    String name;    String tel;    public  AddrBook()    {        rsid = 0;        name = "No Name";        tel = "No Tel";    }        public  AddrBook(String name, String tel)    {        this.rsid = 0;        this.name = name;        this.tel = tel;    }}class AddrBookVct{    Vector vctTemp = new Vector();    AddrBook addrBook;        public void add(AddrBook a)    {        vctTemp.addElement(a);    }        public int size()    {        return vctTemp.size();    }        public AddrBook get(int i)    {        AddrBook a;        a = (AddrBook)vctTemp.elementAt(i);        //System.out.println("I:" + i + " GET NAME:" + a.name);        return (AddrBook)vctTemp.elementAt(i);    }}}