Android 智能问答机器人的实现

转载请标明出处：http://blog.csdn.net/lmj623565791/article/details/38498353，本文出自：【张鸿洋的博客】

今天看到一个ios写的图灵机器人，直接去官网（http://www.tuling123.com/openapi/）看了下API接入，太简单了，就一个get请求~于是乎，写了一个Android版本的机器人，没什么技术含量，但是挺好玩的~刚好昨晚看了自己喜欢的秦时明月，嘿嘿，小貔貅，就是我的机器人宠物啦~

1、效果图

先看看效果图：

Android 智能问答机器人的实现

当然不仅是闲聊，还有更强大的，见下图：

Android 智能问答机器人的实现

好了，效果图就先这样了，有兴趣的自己去研究下，还支持自动学习噢 ~

下面开始代码了~

2、布局文件

主界面消息的显示是一个ListView，不过这个listView中的Item有两种风格，一个是左边的绿色消息，一个是右边的白色消息

左边的消息布局文件：

<?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>

右边的和左边基本一致，就不贴了，最后会给出代码。

主布局文件：

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:background="@drawable/chat_bg_default"    android:orientation="vertical" >    <RelativeLayout        android:id="@+id/ly_chat_title"        android:layout_width="fill_parent"        android:layout_height="45dp"        android:background="@drawable/title_bar" >        <TextView            android:layout_width="fill_parent"            android:layout_height="fill_parent"            android:gravity="center"            android:text="小貔貅"            android:textColor="#fff"            android:textSize="20sp"            android:textStyle="bold" />    </RelativeLayout>    <RelativeLayout        android:id="@+id/ly_chat_bottom"        android:layout_width="fill_parent"        android:layout_height="55dp"        android:layout_alignParentBottom="true"        android:background="@drawable/bottom_bar" >        <Button            android:id="@+id/id_chat_send"            android:layout_width="60dp"            android:layout_height="40dp"            android:layout_alignParentRight="true"            android:layout_centerVertical="true"            android:layout_marginRight="10dp"            android:background="@drawable/chat_send_btn"            android:onClick="sendMessage"            android:text="发送" />        <EditText            android:id="@+id/id_chat_msg"            android:layout_width="fill_parent"            android:layout_height="40dp"            android:layout_centerVertical="true"            android:layout_marginLeft="10dp"            android:layout_marginRight="10dp"            android:layout_toLeftOf="@id/id_chat_send"            android:background="@drawable/login_edit_normal"            android:singleLine="true"            android:textSize="18sp" />    </RelativeLayout>    <ListView        android:id="@+id/id_chat_listView"        android:layout_width="fill_parent"        android:layout_height="fill_parent"        android:layout_above="@id/ly_chat_bottom"        android:layout_below="@id/ly_chat_title"        android:cacheColorHint="#0000"        android:divider="@null"        android:dividerHeight="5dp"        android:scrollbarStyle="outsideOverlay" >    </ListView></RelativeLayout>

就是ListView和下面的消息框和消息按钮了~没撒好说的

3、HttpUtils

封装了一个用于访问API的工具类，其实就一个Get请求：

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();}}}

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

4、ChatMessage

package com.example.android_robot_01.bean;import java.text.DateFormat;import java.text.SimpleDateFormat;import java.util.Date;public class ChatMessage{/** * 消息类型 */private Type type ;/** * 消息内容 */private String msg;/** * 日期 */private Date date;/** * 日期的字符串格式 */private String dateStr;/** * 发送人 */private String name;public enum Type{INPUT, OUTPUT}public ChatMessage(){}public ChatMessage(Type type, String msg){super();this.type = type;this.msg = msg;setDate(new Date());}public String getDateStr(){return dateStr;}public Date getDate(){return date;}public void setDate(Date date){this.date = date;DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");this.dateStr = df.format(date);}public String getName(){return name;}public void setName(String name){this.name = name;}public Type getType(){return type;}public void setType(Type type){this.type = type;}public String getMsg(){return msg;}public void setMsg(String msg){this.msg = msg;}}

都没撒好说的，很简单~

5、主Activity

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);};};@Overrideprotected 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();}}

为ListView设置数据，一开始就设置了第一句话“我是小貅貅，很高兴为您服务”；还有就是sendButton的事件处理。

6、适配器

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;}@Overridepublic int getCount(){return mDatas.size();}@Overridepublic Object getItem(int position){return mDatas.get(position);}@Overridepublic long getItemId(int position){return position;}/** * 接受到消息为1，发送消息为0 */@Overridepublic int getItemViewType(int position){ChatMessage msg = mDatas.get(position);return msg.getType() == Type.INPUT ? 1 : 0;}@Overridepublic int getViewTypeCount(){return 2;}@Overridepublic 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;}}

唯一需要注意的是，因为我们的ListView的Item有两种显示风格，所以比平时我们需要多重写两个方法：

/** * 接受到消息为1，发送消息为0 */@Overridepublic int getItemViewType(int position){ChatMessage msg = mDatas.get(position);return msg.getType() == Type.INPUT ? 1 : 0;}@Overridepublic int getViewTypeCount(){return 2;}

getViewTypeCount返回的就是种类数目了；getItemViewType根据当然Item的position决定返回不同的整型变量。然后在getView中，根据消息的类型去加载不同的Item布局即可。

基本上也就完工了，没啥技术含量，纯属娱乐，各位程序猿兄，没事可以花点时间写下玩一玩~劳逸结合下~

源码点击下载

1、效果图

2、布局文件

3、HttpUtils

4、ChatMessage

5、主Activity

6、适配器

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