Android之智能问答机器人

红太狼 2022-07-30 13:19 261阅读 0赞

### 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();
            }
    
        }
    
    }

### 参考链接: ###

[Android 智能问答机器人的实现 - Hongyang - 博客频道 - CSDN.NET][Android _ - Hongyang - _ - CSDN.NET]

### 完成，效果如下 ###

![这里写图片描述][20160418090816303]

[Android _ - Hongyang - _ - CSDN.NET]: http://blog.csdn.net/lmj623565791/article/details/38498353
[20160418090816303]: /images/20220724/fa6da13676e14c4ab4ff2bcd1f47d91c.png