安卓(Android)聊天机器人实现代码分享

package com.example.android_robot_;
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_.bean.ChatMessage;
import com.example.android_robot_.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 mDatas = new ArrayList();
    /**
     * 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() - );
        };
    };
    @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() - );
        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();
    }
}