Android 智能问答机器人的实现

观书散遗帙，探古穷至妙。这篇文章主要讲述Android 智能问答机器人的实现相关的知识，希望能为你提供帮助。
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：

文章图片

当然不仅是闲聊，还有更强大的。见下图：

文章图片

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="https://www.songbingjia.com/android/@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

【Android 智能问答机器人的实现】