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;    /**     * 存儲聊天消息     */    private List mDatas = new ArrayList();    /**     * 適配器     */    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() - );        };    };    <a  target="_blank">@Override</a>    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，很高興為您服務"));    }    public void sendMessage(View view)    {        final String msg = mMsg.getText().toString();        if (TextUtils.isEmpty(msg))        {            Toast.makeText(this, "您還沒有填寫信息呢...", 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("");        // 關閉軟鍵盤        InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);        // 得到InputMethodManager的實例        if (imm.isActive())        {            // 如果開啟            imm.toggleSoftInput(InputMethodManager.SHOW_IMPLICIT,                    InputMethodManager.HIDE_NOT_ALWAYS);            // 關閉軟鍵盤，開啟方法相同，這個方法是切換開啟與關閉狀態的        }        new Thread()        {            public void run()            {                ChatMessage from = null;                try                {                    from = HttpUtils.sendMsg(msg);                } catch (Exception e)                {                    from = new ChatMessage(Type.INPUT, "服務器掛了呢...");                }                Message message = Message.obtain();                message.obj = from;                mHandler.sendMessage(message);            };        }.start();    }}