Android智能聊天机器人的实现

一 、概述

本博客主要介绍了使用android studio接入图灵机器人，实现智能聊天机器人的功能。

二、注册图灵机器人

• 进入图灵机器人官网，创建自己的图灵机器人
  图灵机器人官网
  
• 点击机器人，进入机器人设置界面，可以看到三种接入方式，我们会使用的是api接入方式，所以会用到apikey
  

三、具体实现过程

• 左边布局实现（服务器发送与接收消息），图灵机器人的头像、名字和对话框以及时间戳的布局

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >
    
    <TextView
        android:background="#f5f5f5"
        android:id="@+id/left_time"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:paddingTop="5dp"
        android:textSize="14sp" />
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal" >
        <LinearLayout
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:orientation="vertical" >
            
            <ImageView
                android:id="@+id/left_image"
                android:layout_width="50dp"
                android:layout_height="50dp"
                android:src="@drawable/shu" />
            
            <TextView
                android:id="@+id/left_name"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginLeft="12dp"
                android:text="小洛"
                android:textSize="16sp" />
        LinearLayout>
        
        <TextView
            android:layout_marginLeft="10dp"
            android:background="@drawable/shuborder"
            android:gravity="center"
            android:textSize="16sp"
            android:layout_gravity="center_vertical"
            android:id="@+id/left_message"
            android:layout_width="200dp"
            android:layout_height="50dp">
    LinearLayout>
LinearLayout>

• 右边布局的实现（客户端发送和接收消息），用户的头像、名字和对话框以及时间戳的布局

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >
    
    <TextView
        android:id="@+id/right_time"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:background="#f5f5f5"
        android:paddingTop="5dp"
        android:textSize="14sp" />
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="right"
        android:orientation="horizontal" >
        
        <TextView
            android:id="@+id/right_message"
            android:layout_width="200dp"
            android:layout_height="50dp"
            android:layout_gravity="center_vertical"
            android:layout_marginRight="10dp"
            android:background="@drawable/myborder"
            android:gravity="center"
            android:textSize="16sp" />
        <LinearLayout
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:orientation="vertical" >
            
            <ImageView
                android:id="@+id/right_image"
                android:layout_width="50dp"
                android:layout_height="50dp"
                android:src="@drawable/my" />
            
            <TextView
                android:id="@+id/right_name"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginLeft="12dp"
                android:layout_marginTop="5dp"
                android:text="grape"
                android:textSize="16sp" />
        LinearLayout>
    LinearLayout>
LinearLayout>

• 聊天布局的实现

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/background"
    android:orientation="vertical" >
    
    <RelativeLayout
        android:id="@+id/top"
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:background="#3A4449" >
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerInParent="true"
            android:text="小洛"
            android:textColor="#ffffff"
            android:textSize="18sp" />
    RelativeLayout>
    
    
    <RelativeLayout
        android:id="@+id/chat_bottom"
        android:layout_width="match_parent"
        android:layout_height="55dp"
        android:layout_alignParentBottom="true"
        android:background="#3A4449" >
        
        <EditText
            android:id="@+id/chat_input_message"
            android:layout_width="240dp"
            android:background="@drawable/downborder"
            android:layout_height="50dp"
            android:layout_centerVertical="true"
            android:layout_marginRight="5dp"
            android:gravity="center" />
        
        <Button
            android:background="@drawable/buttonborder"
            android:id="@+id/send"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentRight="true"
            android:layout_centerVertical="true"
            android:layout_toRightOf="@id/input_message"
            android:text="发送"
            android:textColor="#FFFFFF"
            android:textSize="18sp" />
    RelativeLayout>

    
    <ListView
        android:id="@+id/listview"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_above="@id/chat_bottom"
        android:layout_below="@id/chat_top"
        android:divider="@null"
        android:dividerHeight="3dp" >
    ListView>
RelativeLayout>

• 配置自己的图灵机器人

public class MyRobot {
    public static final String URL_KEY = "http://www.tuling123.com/openapi/api";//获取图灵机器人官网地址
    public static final String API_KEY = "044a24e728164414ba63c3efb1b3b9e9";//此处是你申请的图灵机器人apikey
}

• 聊天信息的实体类

import java.util.Date;
public class ChatMessage {
    private String name;// 名字
    private String message;//聊天信息
    private Type type;// 类型
    private Date date;// 时间

    public ChatMessage() {

    }
    public ChatMessage(String message, Type type, Date date) {
        super();
        this.message = message;
        this.type = type;
        this.date = date;

    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getMessage() {
        return message;
    }

    public void setMessage(String message) {
        this.message = message;
    }

    public Type getType() {
        return type;
    }

    public void setType(Type type) {
        this.type = type;
    }

    public Date getDate() {
        return date;
    }

    public void setDate(Date date) {
        this.date = date;
    }

    public enum Type {
        INCOUNT, OUTCOUNT
    }
}

• 请求消息返回内容的实体类

public class Result {
    private int code; // code码
    private String text; // 信息
    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;
    }
}

• 网络请求类

import com.google.gson.Gson;//Google Gson包
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;
public class HttpRequest {
    public static ChatMessage sendMessage(String message) {
        ChatMessage chatMessage = new ChatMessage();
        String gsonResult = doGet(message);//连接请求的内容
        Gson gson = new Gson();
        Result result = null;
        if (gsonResult != null) {
            try {
                result = gson.fromJson(gsonResult, Result.class);//从json数据（json格式字符串）转为java对象（解析数据）
                chatMessage.setMessage(result.getText());//http连接获取的内容解析之后的结果给聊天信息赋值
            }
            catch (Exception e) {
                chatMessage.setMessage("请求错误...");
            }
        }
        chatMessage.setDate(new Date());
        chatMessage.setType(ChatMessage.Type.INCOUNT);
        return chatMessage;
    }

    public static String doGet(String message) {
        String result = "";
        String url = setParmat(message);
        System.out.println("------------url = " + url);
        InputStream input = null;
        ByteArrayOutputStream output = null;
        try {
            //创建URL实例，打开URLConnection 创建连接
            URL urls = new URL(url);
            HttpURLConnection connection = (HttpURLConnection) urls.openConnection();
            //设置Connection参数
            connection.setReadTimeout(5 * 1000);//读取超时
            connection.setConnectTimeout(5 * 1000);//连接超时
            connection.setRequestMethod("GET"); //使用GET提交模式
            input = connection.getInputStream();
            output = new ByteArrayOutputStream();//初始化字节数组输出流对象
            int len = -1;
            byte[] buff = new byte[1024];
            while ((len = input.read(buff)) != -1) {//读取长度
                output.write(buff, 0, len);// 将buff字节数组中从偏移量0开始的 len 个字节写入此字节数组输出流
            }
            output.flush();
            result = new String(output.toByteArray());
        }
        catch (Exception e) {
            e.printStackTrace();
        }
        finally {
            if (input != null) {
                try {
                    input.close();
                }
                catch (IOException e) {
                    e.printStackTrace();
                }
            }
            if (output != null) {
                try {
                    output .close();
                }
                catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        return result;
    }
    //拼接api地址
    private static String setParmat(String message) {
        String url = "";//api地址
        try {
            url =MyRobot.URL_KEY + "?" + "key=" + MyRobot.APi_KEY + "&info="
                    + URLEncoder.encode(message, "UTF-8");
        }
        catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }
        return url;
    }

}

• 聊天信息的适配器

package com.example.chat;
import android.annotation.SuppressLint;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;
import java.util.List;
public class ChatMessageAdapter extends BaseAdapter {
    private List<ChatMessage> list;
    public ChatMessageAdapter(List<ChatMessage> list) {
        this.list = list;
    }
    
    @Override
    public int getCount() {
        return list.isEmpty() ? 0 : list.size();
    }
    
    @Override
    public Object getItem(int position) {
        return list.get(position);
    }
    
    @Override
    public long getItemId(int position) {
        return position;
    }
    
    @Override
    public int getItemViewType(int position) {
        ChatMessage chatMessage = list.get(position);
        // 接收消息：0，发送消息：1
        if (chatMessage.getType() == ChatMessage.Type.INCOUNT) { 
            return 0;
        }
        return 1;
    }
    
    @Override
    public int getViewTypeCount() {
        return 2;
    }

    @SuppressLint("InflateParams")
    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ChatMessage chatMessage = list.get(position);
        if (convertView == null) {
            ViewHolder viewHolder = null;
            // 加载布局
            if (getItemViewType(position) == 0) {
                convertView = LayoutInflater.from(parent.getContext()).inflate(
                        R.layout.left, null);
                viewHolder = new ViewHolder();
                viewHolder.time = (TextView) convertView
                        .findViewById(R.id.left_time);
                viewHolder.message = (TextView) convertView
                        .findViewById(R.id.message);
            } else {
                convertView = LayoutInflater.from(parent.getContext()).inflate(
                        R.layout.right, null);
                viewHolder = new ViewHolder();
                viewHolder.time = (TextView) convertView
                        .findViewById(R.id.right_time);
                viewHolder.message = (TextView) convertView
                        .findViewById(R.id.right_message);
            }
            convertView.setTag(viewHolder);
        }

        // 设置数据
        ViewHolder vh = (ViewHolder) convertView.getTag();
        vh.time.setText(DateUtils.dateToString(chatMessage.getDate()));
        vh.message.setText(chatMessage.getMessage());
        return convertView;
    }

    private class ViewHolder {
        private TextView time, message; 
    }
}

• 主体类

package com.example.chat;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.text.TextUtils;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;

public class ChatActivity extends Activity {
    private List<ChatMessage> list;
    private ListView listview;
    private EditText input;
    private Button send;
    private ChatMessageAdapter chatAdapter;
    private ChatMessage chatMessage = null;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.chat);
        initView();
        initListener();
        initData();
    }

    // 初始视图
    private void initView() {
        listview = (ListView) findViewById(R.id.listview);
        input = (EditText) findViewById(R.id.input_message);
        send = (Button) findViewById(R.id.send);
    }

    // 设置监听事件
    private void initListener() {
        send.setOnClickListener(onClickListener);
    }

    // 初始化数据
    private void initData() {
        list = new ArrayList<ChatMessage>();
        list.add(new ChatMessage("您好,小洛为您服务!", ChatMessage.Type.INCOUNT, new Date()));
        chatAdapter = new ChatMessageAdapter(list);
        listview.setAdapter(chatAdapter);
        chatAdapter.notifyDataSetChanged();
    }

    // 发送消息聊天
    private void chat() {
        //判断是否输入内容
        final String send_message = chat_input.getText().toString().trim();
        if (TextUtils.isEmpty(send_message)) {
            Toast.makeText(ChatActivity.this, "对不起，您还未发送任何消息",
                    Toast.LENGTH_SHORT).show();
            return;
        }
        // 记录刷新
        ChatMessage sendChatMessage = new ChatMessage();
        sendChatMessage.setMessage(send_message);
        sendChatMessage.setData(new Date());
        sendChatMessage.setType(ChatMessage.Type.OUTCOUNT);
        list.add(sendChatMessage);
        chatAdapter.notifyDataSetChanged();
        input.setText("");
        // 发送消息去服务器端，返回数据
        new Thread() {
            public void run() {
                ChatMessage chat = HttpRequest.sendMessage(send_message);
                Message message = new Message();
                message.what = 0x1;
                message.obj = chat;
                handler.sendMessage(message);
            };
        }.start();
    }

    @SuppressLint("HandlerLeak")
    private Handler handler = new Handler() {
        public void handleMessage(android.os.Message msg) {
            if (msg.what == 0x1) {
                if (msg.obj != null) {
                    chatMessage = (ChatMessage) msg.obj;
                }
                //更新数据
                list.add(chatMessage);
                chatAdapter.notifyDataSetChanged();
            }
        };
    };

    // 点击事件监听
    OnClickListener onClickListener = new OnClickListener() {
        @Override
        public void onClick(View v) {
            switch (v.getId()) {
                case R.id.send:
                    chat();
                    break;
            }
        }
    };
}

• 添加网络权限和依赖

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.chat">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".ChatActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            intent-filter>
        activity>
    application>

    <uses-permission android:name="android.permission.INTERNET" /> 
manifest>

apply plugin: 'com.android.application'

android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.example.chat"
        minSdkVersion 22
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:28.0.0'
    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
    compile 'com.google.code.gson:gson:2.2.4'//添加依赖
}

四、聊天界面展示

作者：于静
原文链接：https://blog.csdn.net/qq_40660339/article/details/90715810