第一篇：一个简单的聊天机器人

来源：互联网发布：php referer 编辑：程序博客网时间：2024/05/18 00:04

昨天写了一个简单的聊天机器人，只是完成了文字类的对话，关于查询的还么有做，今天整理了一下发上来，我不是一个大牛，只是希望给学习者一点小小的能量。

1.以下是机器人部分的布局，我用了RelativeLayout布局，开始写的是LinearLayOut，由于编译器的问题出现了错位，我费了好大劲去看我的代码没有错，人不能吊死在一棵树上，我换种方式就OK了。用户部分的布局与这个基本类似，我就不发了。

<span style="font-size:14px;"><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent" >      <TextView        android:id="@+id/date"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_centerHorizontal="true"        android:layout_marginBottom="3dp"        android:background="#ccc"           android:text="2015-09-17 12:23:12" />      <RelativeLayout           android:id="@+id/relayout"          android:layout_width="wrap_content"          android:layout_height="wrap_content"          android:layout_below="@+id/date">       <ImageView         android:id="@+id/egg"        android:layout_width="50dp"        android:layout_height="50dp"        android:src="@drawable/head3"/>   <TextView         android:id="@+id/eggname"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:textSize="17sp"        android:layout_below="@+id/egg"        android:text="小友子"/>     </RelativeLayout>      <TextView          android:id="@+id/eggtalk"          android:layout_width="wrap_content"          android:layout_height="wrap_content"          android:layout_toRightOf="@+id/relayout"          android:layout_below="@+id/date"          android:background="@drawable/chatfrom_bg_normal"          android:text="您好，小友为您服务！！！" /></RelativeLayout></span>

2.MainActivity的布局，也很简单，主要就是一个ListView 和输入框和发送按钮

<span style="font-size:14px;"><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"android:background="@drawable/ic_03"    tools:context=".MainActivity" >    <TextView        android:id="@+id/title"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="小友"        android:gravity="center_horizontal"        android:textSize="25sp"        android:textColor="#FFFFFF"        android:background="@drawable/title_bar" />    <ListView        android:id="@+id/chat_content"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_above="@+id/bottom"        android:layout_below="@+id/title"         >            </ListView>    <LinearLayout        android:id="@+id/bottom"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_alignParentBottom="true"        android:background="@drawable/bottom_bar"        android:orientation="horizontal"                android:padding="10dp" >        <EditText            android:id="@+id/input_et"            android:layout_width="230dp"            android:layout_height="match_parent"            android:background="@drawable/send_btn_normal"            android:text="你好"            android:textSize="15sp" />        <Button            android:id="@+id/send"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:text="发送"            android:layout_marginLeft="5dp"            android:textSize="20sp" />    </LinearLayout></RelativeLayout></span>

3.下面是一个聊天信息类，包含谁说的话，说话内容，时间。注意枚举类型的定义和date类型的转换。

<span style="font-size:14px;">public class ChatMessage {private String message;private String name;private Date date;private String datestr;public String getDatestr() {return datestr;}public void setDatestr(String datestr) {this.datestr = datestr;}public enum Type{   //定义一个枚举，判断是谁说的话OUTCOMING,INCOMING    //OUTCOMING代表我，INCOMING代表机器人}private Type type;  //type只有以上两种取值public String getMessage() {return message;}public void setMessage(String message) {this.message = message;}public String getName() {return name;}public void setName(String name) {this.name = name;}public Date getDate() {   return date;}public void setDate(Date date) {       //date.setDate(New Data())可以放入输入时间的固定格式字符串this.date = date;DateFormat dFormat=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");this.datestr=dFormat.format(date);}public Type getType() {return type;}public void setType(Type type) {this.type = type;}public ChatMessage(){}public ChatMessage(Type type,String msg){   //构造函数super();this.type=type;this.message=msg;setDate(new Date());}}</span>

4.Result类主要是机器人返回参数code和text，这是图灵机器人规定的格式，是文字类必有有的，当然如果要添加别的内容，参数也要增加。

<span style="font-size:14px;">/* * 机器人返回的内容 * 文字类的返回参数（Json格式）是状态码code和 文字内容  text */public class Result {private int code;private String text;public int getCode() {return code;}public void setCode(int code) {this.code = code;}public String getText() {return text;}public void setText(String text) {this.text = text;}}</span>

5.连接网络的代码

<span style="font-size:14px;">public class HttpUtils {private static String API_KEY="6726dcae3e70bad48df7834dd722c200";private static String URL="http://www.tuling123.com/openapi/api";/* * 得到机器人返回的消息 */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);   //gson解析if (result.getCode()!=100000||result.getText()==null||result.getText().trim().equals("")){message.setMessage("哎。。我的功能也是有限的啊");}else {message.setMessage(result.getText());}message.setType(Type.INCOMING);message.setDate(new Date());return message;}/* * 拼接URL */private static String setParams(String msg){try {msg=URLEncoder.encode(msg,"UTF-8");  //用此方法对String类型的msg进行转码成utf—8} catch (UnsupportedEncodingException e) {e.printStackTrace();<pre name="code" class="java">}return URL+"?key="+API_KEY+"&info="+msg;   //URL格式}/* * get请求，获得返回数据 */private static String doGet(String urlStr){String result = "";URL url2;InputStream is;InputStreamReader isr;BufferedReader br;try {url2 = new URL(urlStr);HttpURLConnection connection = (HttpURLConnection)url2.openConnection();is = connection.getInputStream();isr = new InputStreamReader(is,"utf-8");String line = "";br = new BufferedReader(isr);while ((line=br.readLine())!=null) {   result+=line;}try {br.close();} catch (IOException e) {e.printStackTrace();}} catch (MalformedURLException e) {e.printStackTrace();System.out.println("网络异常");} catch (IOException e) {e.printStackTrace();}return result;}}

</pre><span style="font-size:14px"><br />6.自定义一个Adapter类<br /></span><p></p><pre>

<span style="font-family: Arial, Helvetica, sans-serif;">//LayoutInflater是用来找layout下的xml布局文件，并且实例化；</span>

//对于一个没有被载入或者想要动态载入的界面，都需要使用LayoutInflater.inflate()来载入；private LayoutInflater mInflater;private Context context;private List<ChatMessage> datas;public MessageAdapter(Context context,List<ChatMessage> datas){this.context=context;this.datas=datas;mInflater=LayoutInflater.from(context);}@Overridepublic int getCount() {// TODO Auto-generated method stubreturn datas.size();}@Overridepublic Object getItem(int arg0) {// TODO Auto-generated method stubreturn datas.get(arg0);}@Overridepublic long getItemId(int arg0) {// TODO Auto-generated method stubreturn arg0;}@Overridepublic int getItemViewType(int position) {ChatMessage msg=datas.get(position);return msg.getType()==Type.INCOMING?1:0;  //机器人输出的type为1，人输出的为0}//协定ListView中有几种类型的item@Overridepublic int getViewTypeCount() {return 2;}@Overridepublic View getView(int position, View converView, ViewGroup parent) {ChatMessage message = datas.get(position);    ViewHolder vh = null;if (converView==null) {if (message.getType()==Type.OUTCOMING) {converView = mInflater.inflate(R.layout.me_talk,null);vh=new ViewHolder();vh.date=(TextView)converView.findViewById(R.id.date);vh.content=(TextView)converView.findViewById(R.id.metalk);converView.setTag(vh);}else if (message.getType()==Type.INCOMING) {converView=mInflater.inflate(R.layout.agg_talk, null);vh=new ViewHolder();vh.date=(TextView)converView.findViewById(R.id.date);vh.content=(TextView)converView.findViewById(R.id.eggtalk);converView.setTag(vh);}}else {vh=(ViewHolder)converView.getTag();}vh.content.setText(message.getMessage());vh.date.setText(message.getDatestr());return converView;}class ViewHolder{TextView date;TextView content;}}</span>

7.Mainactivity

<span style="font-size:14px;">public class MainActivity extends Activity {private ListView message;private EditText input_message;private Button send;private String msg;private List<ChatMessage> datas=new ArrayList<ChatMessage>(); //存储聊天信息private MessageAdapter adapter;private MyTask task;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);requestWindowFeature(Window.FEATURE_NO_TITLE); //隐藏窗体标题栏，全屏显示message = (ListView)findViewById(R.id.chat_content);input_message=(EditText)findViewById(R.id.input_et);send=(Button)findViewById(R.id.send);datas.add(new ChatMessage(Type.INCOMING,"祝小友子生日快乐"));  //设置机器人输出的第一句话send.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View arg0) {    msg=input_message.getText().toString();  //获取输入内容if (TextUtils.isEmpty(msg)) {   //TextUtils类对字符串进行处理，此处判断输入是否为空Toast.makeText(MainActivity.this, "你还没输入信息", Toast.LENGTH_LONG).show();return;}ChatMessage to=new ChatMessage(Type.OUTCOMING,msg);  to.setDate(new Date());datas.add(to);adapter.notifyDataSetChanged();   //更新数据message.setSelection(datas.size()-1);  //将列表移动到指定的Position处。input_message.setText("");task=new MyTask();task.execute(msg);}});adapter=new MessageAdapter(MainActivity.this, datas);message.setAdapter(adapter);}//返回一个CharMessage对象class MyTask extends AsyncTask<String, Void, ChatMessage>{@Overrideprotected ChatMessage doInBackground(String... arg0) {ChatMessage from = null;try {from=HttpUtils.sendMsg(arg0[0]);} catch (Exception e) {from=new ChatMessage(Type.INCOMING,"哎呀，我的服务器挂啦！");}return from;}@Overrideprotected void onPostExecute(ChatMessage result) {super.onPostExecute(result);datas.add(result);adapter.notifyDataSetChanged();message.setSelection(datas.size()-1);}}}</span>

8.最后，不要忘了连网操作！

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