Android 智能问答机器人的实现

2022-04-25 00:49:43

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版本号的机器人，没什么技术含量，可是挺好玩的~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：

当然不仅是闲聊，还有更强大的。见下图：

好了，效果图就先这样了，有兴趣的自己去研究下。还支持自己主动学习噢 ~

以下開始代码了~

2、布局文件

主界面消息的显示是一个ListView，只是这个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和以下的消息框和消息button了~没撒好说的

3、HttpUtils

封装了一个用于訪问API的工具类，事实上就一个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("server连接错误！

");

			}

		} catch (Exception e)

		{

			e.printStackTrace();

			throw new CommonException("server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。非常easy~

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);

		};

	};

	@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。非常高兴为您服务"));

	}

	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())

		{

			// 假设开启

			imm.toggleSoftInput(InputMethodManager.SHOW_IMPLICIT,

					InputMethodManager.HIDE_NOT_ALWAYS);

			// 关闭软键盘。开启方法同样，这种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, "server挂了呢...");

				}

				Message message = Message.obtain();

				message.obj = from;

				mHandler.sendMessage(message);

			};

		}.start();

	}

}

为ListView设置数据。一開始就设置了第一句话“我是小貅貅。非常高兴为您服务”。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;

	}

	@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;

	}

}

唯一须要注意的是，由于我们的ListView的Item有两种显示风格，所以比平时我们须要多重写两个方法：

/**

	 * 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;

	}

getViewTypeCount返回的就是种类数目了；getItemViewType依据当然Item的position决定返回不同的整型变量。然后在getView中，依据消息的类型去载入不同的Item布局就可以。

基本上也就完工了，没啥技术含量，纯属娱乐。各位程序员兄，没事能够花点时间写下玩一玩~劳逸结合下~

源代码点击下载

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