Android之智能问答机器人

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本文主要利用图灵机器人的接口，所做的一个简单的智能问答机器人

实现

由于发送与接收消息都是不同的listView，所以要用有两个listVeiw的布局文件

接收消息布局文件

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="wrap_content"

    android:orientation="vertical" >

    <TextView

        android:id="@+id/chat_from_createDate"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="2012-09-01 18:30:20"

        style="@style/chat_date_style"

       />

    <LinearLayout

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:orientation="horizontal" >

        <LinearLayout

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:layout_marginLeft="10dp"

            android:orientation="vertical" >

            <ImageView

                android:id="@+id/chat_from_icon"

                android:layout_width="49dp"

                android:layout_height="49dp"

                android:src="@drawable/icon" />

            <TextView

                android:id="@+id/chat_from_name"

                android:layout_width="wrap_content"

                android:layout_height="wrap_content"

                android:layout_gravity="center"

                android:text="小貅貅"

                android:textSize="18sp" />

        </LinearLayout>

        <TextView

            android:id="@+id/chat_from_content"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:minHeight="50dp"

            android:background="@drawable/chat_from_msg"

            android:text="有大吗。。。"

            android:textSize="18sp"

            android:textColor="#000"

            android:gravity="center_vertical"

            android:focusable="true"

            android:clickable="true"

            android:lineSpacingExtra="2dp"

            />

    </LinearLayout>

</LinearLayout>

发送消息布局文件

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="wrap_content"

    android:orientation="vertical" >

    <TextView

        android:id="@+id/chat_send_createDate"

        style="@style/chat_date_style"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="2012-09-01 18:30:21" />

    <RelativeLayout

        android:layout_width="fill_parent"

        android:layout_height="wrap_content" >

        <LinearLayout

            android:id="@+id/ly_chat_icon"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:layout_alignParentRight="true"

            android:layout_marginLeft="10dp"

            android:orientation="vertical" >

            <ImageView

                android:id="@+id/chat_send_icon"

                android:layout_width="49dp"

                android:layout_height="49dp"

                android:src="@drawable/my" />

            <TextView

                android:id="@+id/chat_send_name"

                android:layout_width="wrap_content"

                android:layout_height="wrap_content"

                android:layout_gravity="center"

                android:text="鸿洋"

                android:textSize="18sp" />

        </LinearLayout>

        <TextView

            android:id="@+id/chat_send_content"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:layout_toLeftOf="@id/ly_chat_icon"

            android:background="@drawable/chat_send_msg"

            android:clickable="true"

            android:focusable="true"

            android:gravity="center_vertical"

            android:lineSpacingExtra="2dp"

            android:minHeight="50dp"

            android:text="有大吗。。。"

            android:textColor="#000"

            android:textSize="18sp" />

    </RelativeLayout>

</LinearLayout>

MainActivity实现

package com.example.android_robot_01;

import java.util.ArrayList;

import java.util.Date;

import java.util.List;

import android.app.Activity;

import android.content.Context;

import android.os.Bundle;

import android.os.Handler;

import android.os.Message;

import android.text.TextUtils;

import android.view.View;

import android.view.Window;

import android.view.inputmethod.InputMethodManager;

import android.widget.EditText;

import android.widget.ListView;

import android.widget.Toast;

import com.example.android_robot_01.bean.ChatMessage;

import com.example.android_robot_01.bean.ChatMessage.Type;

import com.zhy.utils.HttpUtils;

public class MainActivity extends Activity

{

    /**

     * 展示消息的listview

     */

    private ListView mChatView;

    /**

     * 文本域

     */

    private EditText mMsg;

    /**

     * 存储聊天消息

     */

    private List<ChatMessage> mDatas = new ArrayList<ChatMessage>();

    /**

     * 适配器

     */

    private ChatMessageAdapter mAdapter;

    private Handler mHandler = new Handler()

    {

        public void handleMessage(android.os.Message msg)

        {

            ChatMessage from = (ChatMessage) msg.obj;

            mDatas.add(from);

            mAdapter.notifyDataSetChanged();

            mChatView.setSelection(mDatas.size() - 1);

        };

    };

    @Override

    protected void onCreate(Bundle savedInstanceState)

    {

        super.onCreate(savedInstanceState);

        requestWindowFeature(Window.FEATURE_NO_TITLE);

        setContentView(R.layout.main_chatting);

        initView();

        mAdapter = new ChatMessageAdapter(this, mDatas);

        mChatView.setAdapter(mAdapter);

    }

    private void initView()

    {

        mChatView = (ListView) findViewById(R.id.id_chat_listView);

        mMsg = (EditText) findViewById(R.id.id_chat_msg);

        mDatas.add(new ChatMessage(Type.INPUT, "我是小貅貅，很高兴为您服务"));

    }

    public void sendMessage(View view)

    {

        final String msg = mMsg.getText().toString();

        if (TextUtils.isEmpty(msg))

        {

            Toast.makeText(this, "您还没有填写信息呢...", Toast.LENGTH_SHORT).show();

            return;

        }

        ChatMessage to = new ChatMessage(Type.OUTPUT, msg);

        to.setDate(new Date());

        mDatas.add(to);

        mAdapter.notifyDataSetChanged();

        mChatView.setSelection(mDatas.size() - 1);

        mMsg.setText("");

        // 关闭软键盘

        InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);

        // 得到InputMethodManager的实例

        if (imm.isActive())

        {

            // 如果开启

            imm.toggleSoftInput(InputMethodManager.SHOW_IMPLICIT,

                    InputMethodManager.HIDE_NOT_ALWAYS);

            // 关闭软键盘，开启方法相同，这个方法是切换开启与关闭状态的

        }

        new Thread()

        {

            public void run()

            {

                ChatMessage from = null;

                try

                {

                    from = HttpUtils.sendMsg(msg);

                } catch (Exception e)

                {

                    from = new ChatMessage(Type.INPUT, "服务器挂了呢...");

                }

                Message message = Message.obtain();

                message.obj = from;

                mHandler.sendMessage(message);

            };

        }.start();

    }

}

消息ListView的adapter，根据类型的不同inflate不同的布局文件

package com.example.android_robot_01;

import java.util.List;

import android.content.Context;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.BaseAdapter;

import android.widget.TextView;

import com.example.android_robot_01.bean.ChatMessage;

import com.example.android_robot_01.bean.ChatMessage.Type;

public class ChatMessageAdapter extends BaseAdapter

{

    private LayoutInflater mInflater;

    private List<ChatMessage> mDatas;

    public ChatMessageAdapter(Context context, List<ChatMessage> datas)

    {

        mInflater = LayoutInflater.from(context);

        mDatas = datas;

    }

    @Override

    public int getCount()

    {

        return mDatas.size();

    }

    @Override

    public Object getItem(int position)

    {

        return mDatas.get(position);

    }

    @Override

    public long getItemId(int position)

    {

        return position;

    }

    /**

     * 接受到消息为1，发送消息为0

     */

    @Override

    public int getItemViewType(int position)

    {

        ChatMessage msg = mDatas.get(position);

        return msg.getType() == Type.INPUT ? 1 : 0;

    }

    @Override

    public int getViewTypeCount()

    {

        return 2;

    }

    @Override

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

    {

        ChatMessage chatMessage = mDatas.get(position);

        ViewHolder viewHolder = null;

        if (convertView == null)

        {

            viewHolder = new ViewHolder();

            if (chatMessage.getType() == Type.INPUT)

            {

                convertView = mInflater.inflate(R.layout.main_chat_from_msg,

                        parent, false);

                viewHolder.createDate = (TextView) convertView

                        .findViewById(R.id.chat_from_createDate);

                viewHolder.content = (TextView) convertView

                        .findViewById(R.id.chat_from_content);

                convertView.setTag(viewHolder);

            } else

            {

                convertView = mInflater.inflate(R.layout.main_chat_send_msg,

                        null);

                viewHolder.createDate = (TextView) convertView

                        .findViewById(R.id.chat_send_createDate);

                viewHolder.content = (TextView) convertView

                        .findViewById(R.id.chat_send_content);

                convertView.setTag(viewHolder);

            }

        } else

        {

            viewHolder = (ViewHolder) convertView.getTag();

        }

        viewHolder.content.setText(chatMessage.getMsg());

        viewHolder.createDate.setText(chatMessage.getDateStr());

        return convertView;

    }

    private class ViewHolder

    {

        public TextView createDate;

        public TextView name;

        public TextView content;

    }

}

获取消息的工具类,暴露出去的，就是sendMsg这个静态方法，当然将返回的数据也直接封装成了ChatMessage

package com.zhy.utils;

import java.io.ByteArrayOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.io.UnsupportedEncodingException;

import java.net.HttpURLConnection;

import java.net.URL;

import java.net.URLEncoder;

import java.util.Date;

import com.example.android_robot_01.bean.ChatMessage;

import com.example.android_robot_01.bean.ChatMessage.Type;

import com.example.android_robot_01.bean.CommonException;

import com.example.android_robot_01.bean.Result;

import com.google.gson.Gson;

public class HttpUtils

{

    private static String API_KEY = "534dc342ad15885dffc10d7b5f813451";

    private static String URL = "http://www.tuling123.com/openapi/api";

    /**

     * 发送一个消息，并得到返回的消息

     * @param msg

     * @return

     */

    public static ChatMessage sendMsg(String msg)

    {

        ChatMessage message = new ChatMessage();

        String url = setParams(msg);

        String res = doGet(url);

        Gson gson = new Gson();

        Result result = gson.fromJson(res, Result.class);

        if (result.getCode() > 400000 || result.getText() == null

                || result.getText().trim().equals(""))

        {

            message.setMsg("该功能等待开发...");

        }else

        {

            message.setMsg(result.getText());

        }

        message.setType(Type.INPUT);

        message.setDate(new Date());

        return message;

    }

    /**

     * 拼接Url

     * @param msg

     * @return

     */

    private static String setParams(String msg)

    {

        try

        {

            msg = URLEncoder.encode(msg, "UTF-8");

        } catch (UnsupportedEncodingException e)

        {

            e.printStackTrace();

        }

        return URL + "?key=" + API_KEY + "&info=" + msg;

    }

    /**

     * Get请求，获得返回数据

     * @param urlStr

     * @return

     */

    private static String doGet(String urlStr)

    {

        URL url = null;

        HttpURLConnection conn = null;

        InputStream is = null;

        ByteArrayOutputStream baos = null;

        try

        {

            url = new URL(urlStr);

            conn = (HttpURLConnection) url.openConnection();

            conn.setReadTimeout(5 * 1000);

            conn.setConnectTimeout(5 * 1000);

            conn.setRequestMethod("GET");

            if (conn.getResponseCode() == 200)

            {

                is = conn.getInputStream();

                baos = new ByteArrayOutputStream();

                int len = -1;

                byte[] buf = new byte[128];

                while ((len = is.read(buf)) != -1)

                {

                    baos.write(buf, 0, len);

                }

                baos.flush();

                return baos.toString();

            } else

            {

                throw new CommonException("服务器连接错误！");

            }

        } catch (Exception e)

        {

            e.printStackTrace();

            throw new CommonException("服务器连接错误！");

        } finally

        {

            try

            {

                if (is != null)

                    is.close();

            } catch (IOException e)

            {

                e.printStackTrace();

            }

            try

            {

                if (baos != null)

                    baos.close();

            } catch (IOException e)

            {

                e.printStackTrace();

            }

            conn.disconnect();

        }

    }

}