之前学习了通过Openfire+spark+smack的模式来完成我们的即时通讯软件，上次我们已经完成了Openfire的安装和配置，这次我们继续完成我们的客户端部分。

　　1.首先我们通过百度smack来下载我们所需要的jar包，将下载好的jar包导入到我们的工程中，创建一个工具类XmppTool:

package com.xmpp.client.util;

import org.jivesoftware.smack.ConnectionConfiguration;

import org.jivesoftware.smack.XMPPConnection;

import org.jivesoftware.smack.XMPPException;

import org.json.JSONArray;

public class XmppTool {

    private static XMPPConnection con = null;

    private static void openConnection(String url, String pcName) {

        try {

            // url、端口，也可以设置连接的服务器名字，地址，端口，用户。

            ConnectionConfiguration connConfig = new ConnectionConfiguration(

                    "192.168.2.113", 5222, "JEREHEDU");

            con = new XMPPConnection(connConfig);

            con.connect();

        } catch (XMPPException xe) {

            xe.printStackTrace();

        }

    }

    private static void openOffConnection(String url, String pcName) {

        try {

            ConnectionConfiguration connConfig = new ConnectionConfiguration(

                    url, 5222, pcName);

            connConfig.setSendPresence(false);

            con = new XMPPConnection(connConfig);

            con.connect();

        } catch (XMPPException xe) {

            xe.printStackTrace();

        }

    }

    public static XMPPConnection getOffConnection(String url, String pcName) {

        if (con == null) {

            openOffConnection(url, pcName);

        }

        return con;

    }

    public static XMPPConnection getConnection(String url, String pcName) {

        if (con == null) {

            openConnection(url, pcName);

        }

        return con;

    }

    public static void closeConnection() {

        con.disconnect();

        con = null;

    }

}

工具类XmppTool

　　主要还是通过ConnectionConfiguration来连接服务器，传入三个参数（地址，端口，用户名）

　　2.登陆界面

package com.xmpp.client;

import java.util.Iterator;

import org.jivesoftware.smack.XMPPException;

import org.jivesoftware.smack.packet.Presence;

import org.jivesoftware.smackx.OfflineMessageManager;

import com.xmpp.client.util.XmppTool;

import com.xmpp.client.R;

import android.app.Activity;

import android.content.Intent;

import android.os.Bundle;

import android.os.Handler;

import android.util.Log;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.EditText;

import android.widget.LinearLayout;

import android.widget.Toast;

public class FormLogin extends Activity implements OnClickListener {

    private EditText useridText, pwdText, urlText, pcnameText;;

    private LinearLayout layout1, layout2;

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.formlogin);

        // 获取用户和密码

        this.useridText = (EditText) findViewById(R.id.formlogin_userid);

        this.pwdText = (EditText) findViewById(R.id.formlogin_pwd);

        this.urlText = (EditText) findViewById(R.id.formlogin_url);

        this.pcnameText = (EditText) findViewById(R.id.formlogin_pcname);

        // 正在登录

        this.layout1 = (LinearLayout) findViewById(R.id.formlogin_layout1);

        // 登录界面

        this.layout2 = (LinearLayout) findViewById(R.id.formlogin_layout2);

        Button btsave = (Button) findViewById(R.id.formlogin_btsubmit);

        btsave.setOnClickListener(this);

        Button btcancel = (Button) findViewById(R.id.formlogin_btcancel);

        btcancel.setOnClickListener(this);

    }

    @Override

    public void onClick(View v) {

        // 根据ID来进行提交或者取消

        switch (v.getId()) {

        case R.id.formlogin_btsubmit:

            // 取得填入的用户和密码

            // 取得填入的用户和密码

            final String USERID = this.useridText.getText().toString();

            final String PWD = this.pwdText.getText().toString();

            final String URL = this.urlText.getText().toString();

            final String PCNAME = this.pcnameText.getText().toString();

            Thread t = new Thread(new Runnable() {

                public void run() {

                    // sendEmptyMessage:发送一条消息

                    handler.sendEmptyMessage(1);

                    try {

                        // 连接

                        XmppTool.getOffConnection(URL, PCNAME).login(USERID,

                                PWD);

                        getOfflineMessage();

                        // 状态

                        Presence presence = new Presence(

                                Presence.Type.available);

                        XmppTool.getConnection(URL, PCNAME)

                                .sendPacket(presence);

                        Intent intent = new Intent();

                        intent.setClass(FormLogin.this, FormClient.class);

                        intent.putExtra("USERID", USERID);

                        intent.putExtra("URL", URL);

                        intent.putExtra("PCNAME", PCNAME);

                        FormLogin.this.startActivity(intent);

                        FormLogin.this.finish();

                    } catch (XMPPException e) {

                        XmppTool.closeConnection();

                        handler.sendEmptyMessage(2);

                    }

                }

            });

            t.start();

            break;

        case R.id.formlogin_btcancel:

            finish();

            break;

        }

    }

    /**

     * 获取离线消息

     */

    private void getOfflineMessage() {

        OfflineMessageManager offlineManager = new OfflineMessageManager(

                XmppTool.getConnection(this.urlText.getText().toString(),

                        this.pcnameText.getText().toString()));

        Iterator<org.jivesoftware.smack.packet.Message> it;

        try {

            it = offlineManager.getMessages();

            while (it.hasNext()) {

                org.jivesoftware.smack.packet.Message message = it.next();

                Log.i("离线消息", "收到离线消息, Received from 【" + message.getFrom()

                        + "】 message: " + message.getBody());

            }

            // 删除离线消息

            offlineManager.deleteMessages();

        } catch (XMPPException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }

    }

    private Handler handler = new Handler() {

        public void handleMessage(android.os.Message msg) {

            if (msg.what == 1) {

                layout1.setVisibility(View.VISIBLE);

                layout2.setVisibility(View.GONE);

            } else if (msg.what == 2) {

                layout1.setVisibility(View.GONE);

                layout2.setVisibility(View.VISIBLE);

                Toast.makeText(FormLogin.this, "登录失败！", Toast.LENGTH_SHORT)

                        .show();

            }

        };

    };

}

登陆界面

　　3.聊天客户端

package com.xmpp.client;

import java.io.File;

import java.util.ArrayList;

import java.util.Date;

import java.util.Iterator;

import java.util.List;

import org.jivesoftware.smack.Chat;

import org.jivesoftware.smack.ChatManager;

import org.jivesoftware.smack.ChatManagerListener;

import org.jivesoftware.smack.MessageListener;

import org.jivesoftware.smack.PacketListener;

import org.jivesoftware.smack.XMPPException;

import org.jivesoftware.smack.packet.Message;

import org.jivesoftware.smack.packet.Packet;

import org.jivesoftware.smackx.filetransfer.FileTransfer;

import org.jivesoftware.smackx.filetransfer.FileTransfer.Status;

import org.jivesoftware.smackx.filetransfer.FileTransferListener;

import org.jivesoftware.smackx.filetransfer.FileTransferManager;

import org.jivesoftware.smackx.filetransfer.FileTransferRequest;

import org.jivesoftware.smackx.filetransfer.IncomingFileTransfer;

import org.jivesoftware.smackx.filetransfer.OutgoingFileTransfer;

import org.jivesoftware.smackx.muc.MultiUserChat;

import org.jivesoftware.smackx.packet.DelayInformation;

import android.app.Activity;

import android.app.AlertDialog;

import android.content.Context;

import android.content.DialogInterface;

import android.content.Intent;

import android.os.Bundle;

import android.os.Handler;

import android.util.Log;

import android.view.LayoutInflater;

import android.view.View;

import android.view.View.OnClickListener;

import android.view.ViewGroup;

import android.widget.BaseAdapter;

import android.widget.Button;

import android.widget.EditText;

import android.widget.ListView;

import android.widget.ProgressBar;

import android.widget.TextView;

import android.widget.Toast;

import com.lidroid.xutils.HttpUtils;

import com.lidroid.xutils.exception.HttpException;

import com.lidroid.xutils.http.RequestParams;

import com.lidroid.xutils.http.ResponseInfo;

import com.lidroid.xutils.http.callback.RequestCallBack;

import com.lidroid.xutils.http.client.HttpRequest.HttpMethod;

import com.xmpp.client.util.ScreenShot;

import com.xmpp.client.util.TimeRender;

import com.xmpp.client.util.XmppTool;

public class FormClient extends Activity {

    private MyAdapter adapter;

    private List<Msg> listMsg = new ArrayList<Msg>();

    private String pUSERID;

    private EditText msgText, toText;

    private ProgressBar pb;

    private Button btsend;

    private TextView waitpb;

    private String URL;

    private String PCNAME;

    private String PERSON;

    private Chat mychat;

    private ChatManager cm;

    public class Msg {

        String userid;

        String msg;

        String date;

        String from;

        public Msg(String userid, String msg, String date, String from) {

            this.userid = userid;

            this.msg = msg;

            this.date = date;

            this.from = from;

        }

    }

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.formclient);

        // 获取Intent传过来的用户名,url,pcname

        this.pUSERID = getIntent().getStringExtra("USERID");

        this.URL = getIntent().getStringExtra("URL");

        this.PCNAME = getIntent().getStringExtra("PCNAME");

        ListView listview = (ListView) findViewById(R.id.formclient_listview);

        listview.setTranscriptMode(ListView.TRANSCRIPT_MODE_ALWAYS_SCROLL);

        this.adapter = new MyAdapter(this);

        listview.setAdapter(adapter);

        // 获取文本信息

        this.msgText = (EditText) findViewById(R.id.formclient_text);

        // 获取聊天对象

        this.toText = (EditText) findViewById(R.id.formclient_to);

        // 发送消息给water-pc服务器water（获取自己的服务器，和好友）

        // 消息监听

        cm = XmppTool.getConnection(URL, PCNAME).getChatManager();

        chatListener();

        // 发送消息

        btsend = (Button) findViewById(R.id.formclient_btsend);

        sendChatMessage();

    }

    /**

     * send chat message

     *

     */

    private void sendChatMessage() {

        btsend.setOnClickListener(new OnClickListener() {

            @Override

            public void onClick(View v) {

                // 获取text文本

                String msg = msgText.getText().toString();

                PERSON = toText.getText().toString();

                mychat = cm.createChat(PERSON + "@" + PCNAME, null);

                if (msg.length() > 0) {

                    // 发送消息

                    listMsg.add(new Msg(pUSERID, msg, TimeRender.getDate(),

                            "OUT"));

                    // 刷新适配器

                    adapter.notifyDataSetChanged();

                    try {

                        // 发送消息给指定人

                        mychat.sendMessage(msg);

                    } catch (XMPPException e) {

                        e.printStackTrace();

                    }

                } else {

                    Toast.makeText(FormClient.this, "请输入信息", Toast.LENGTH_SHORT)

                            .show();

                }

                // 清空text

                msgText.setText("");

            }

        });

    }

    /**

     * 监听单人消息

     */

    private void chatListener() {

        cm.addChatListener(new ChatManagerListener() {

            @Override

            public void chatCreated(Chat chat, boolean able) {

                chat.addMessageListener(new MessageListener() {

                    @Override

                    public void processMessage(Chat chat2, Message message) {

                        Log.v("--tags--", "--tags-form--" + message.getFrom());

                        Log.v("--tags--",

                                "--tags-message--" + message.getBody());

                        // 收到来自water-pc服务器water的消息（获取自己的服务器，和好友）

                        if (message.getFrom().contains(pUSERID + "@keyi-pc")) {

                            // 获取用户、消息、时间、IN

                            String[] args = new String[] { pUSERID,

                                    message.getBody(), TimeRender.getDate(),

                                    "IN" };

                           android.os.Message msg = handler.obtainMessage();

                            msg.what = 1;

                            msg.obj = args;

                            msg.sendToTarget();

                        } else {

                             }

                            Log.i("json", "b  " + message.getBody());

                            String amsg = message.getBody();

                            String[] args = null;

                                args = new String[] { message.getFrom(), amsg,

                                        TimeRender.getDate(), "IN" };

                                android.os.Message msg = handler

                                        .obtainMessage();

                                msg.what = 1;

                                msg.obj = args;

                                msg.sendToTarget();

                        }

                });

            }

        });

    }

    private OutgoingFileTransfer fileTransfer;

    Handler outHandler = new Handler();

    Runnable outrunnable = new Runnable() {

        @Override

        public void run() {

            if (fileTransfer.getProgress() == 1) {

                pb.setVisibility(View.GONE);

                outHandler.removeCallbacks(outrunnable);

            }

            outHandler.postDelayed(outrunnable, 100);

        }

    };

    private Handler handler = new Handler() {

        public void handleMessage(android.os.Message msg) {

            switch (msg.what) {

            case 1:

                // 获取消息并显示

                String[] args = (String[]) msg.obj;

                listMsg.add(new Msg(args[0], args[1], args[2], args[3]));

                // 刷新适配器

                adapter.notifyDataSetChanged();

                break;

            case 2:

                // 附件进度条

                if (pb.getVisibility() == View.GONE) {

                    pb.setVisibility(View.VISIBLE);

                    waitpb.setVisibility(View.VISIBLE);

                }

                break;

            case 3:

                pb.setProgress(msg.arg1);

                break;

            case 4:

                pb.setVisibility(View.GONE);

                waitpb.setVisibility(View.GONE);

                break;

            default:

                break;

            }

        };

    };

    // 退出

    @Override

    public void onBackPressed() {

        super.onBackPressed();

        XmppTool.closeConnection();

        System.exit(0);

        android.os.Process.killProcess(android.os.Process.myPid());

    }

    class MyAdapter extends BaseAdapter {

        private Context cxt;

        private LayoutInflater inflater;

        public MyAdapter(FormClient formClient) {

            this.cxt = formClient;

        }

        @Override

        public int getCount() {

            return listMsg.size();

        }

        @Override

        public Object getItem(int position) {

            return listMsg.get(position);

        }

        @Override

        public long getItemId(int position) {

            return position;

        }

        @Override

        public View getView(int position, View convertView, ViewGroup parent) {

            // 显示消息的布局：内容、背景、用户、时间

            this.inflater = (LayoutInflater) this.cxt

                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);

            // IN,OUT的图片

            if (listMsg.get(position).from.equals("IN")) {

                convertView = this.inflater.inflate(

                        R.layout.formclient_chat_in, null);

            } else {

                convertView = this.inflater.inflate(

                        R.layout.formclient_chat_out, null);

            }

            TextView useridView = (TextView) convertView

                    .findViewById(R.id.formclient_row_userid);

            TextView dateView = (TextView) convertView

                    .findViewById(R.id.formclient_row_date);

            TextView msgView = (TextView) convertView

                    .findViewById(R.id.formclient_row_msg);

            useridView.setText(listMsg.get(position).userid);

            dateView.setText(listMsg.get(position).date);

            msgView.setText(listMsg.get(position).msg);

            return convertView;

        }

    }

}

聊天客户端

　　其中有好多类都是自带的我们只需要实现它就可以了。

作者：杰瑞教育
出处：http://www.cnblogs.com/jerehedu/ 
本文版权归烟台杰瑞教育科技有限公司和博客园共有，欢迎转载，但未经作者同意必须保留此段声明，且在文章页面明显位置给出原文连接，否则保留追究法律责任的权利。
 

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