android 仿微信聊天界面，以及语音录制功能

<?xml version="1.0" encoding="utf-8"?>  
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"  
    android:layout_width="fill_parent"  
    android:layout_height="fill_parent"  
    android:background="@drawable/chat_bg_default" >  
  
    <!-- 标题栏 -->  
    <RelativeLayout  
        android:id="@+id/rl_layout"  
        android:layout_width="fill_parent"  
        android:layout_height="45dp"  
        android:background="@drawable/title_bar"  
        android:gravity="center_vertical" >  
  
        <Button  
            android:id="@+id/btn_back"  
            android:layout_width="70dp"  
            android:layout_height="wrap_content"  
            android:layout_centerVertical="true"  
            android:background="@drawable/title_btn_back"  
            android:onClick="chat_back"  
            android:text="返回"  
            android:textColor="#fff"  
            android:textSize="14sp" />  
  
        <TextView  
            android:layout_width="wrap_content"  
            android:layout_height="wrap_content"  
            android:layout_centerInParent="true"  
            android:text="白富美"  
            android:textColor="#ffffff"  
            android:textSize="20sp" />  
  
        <ImageButton  
            android:id="@+id/right_btn"  
            android:layout_width="67dp"  
            android:layout_height="wrap_content"  
            android:layout_alignParentRight="true"  
            android:layout_centerVertical="true"  
            android:layout_marginRight="5dp"  
            android:background="@drawable/title_btn_right"  
            android:src="@drawable/mm_title_btn_contact_normal" />  
    </RelativeLayout>  
  
    <!-- 底部按钮以及 编辑框 -->  
    <RelativeLayout  
        android:id="@+id/rl_bottom"  
        android:layout_width="fill_parent"  
        android:layout_height="wrap_content"  
        android:layout_alignParentBottom="true"  
        android:background="@drawable/chat_footer_bg" >  
  
        <ImageView  
            android:id="@+id/ivPopUp"  
            android:layout_width="wrap_content"  
            android:layout_height="wrap_content"  
            android:layout_alignParentLeft="true"  
            android:layout_centerVertical="true"  
            android:layout_marginLeft="10dip"  
            android:src="@drawable/chatting_setmode_msg_btn" />  
  
        <RelativeLayout  
            android:id="@+id/btn_bottom"  
            android:layout_width="fill_parent"  
            android:layout_height="wrap_content"  
            android:layout_alignParentRight="true"  
            android:layout_centerVertical="true"  
            android:layout_toRightOf="@+id/ivPopUp" >  
  
            <Button  
                android:id="@+id/btn_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:text="发送" />  
  
            <EditText  
                android:id="@+id/et_sendmessage"  
                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/btn_send"  
                android:background="@drawable/login_edit_normal"  
                android:singleLine="true"  
                android:textSize="18sp" />  
        </RelativeLayout>  
  
        <TextView  
            android:id="@+id/btn_rcd"  
            android:layout_width="fill_parent"  
            android:layout_height="40dp"  
            android:layout_alignParentRight="true"  
            android:layout_centerVertical="true"  
            android:layout_marginLeft="10dp"  
            android:layout_marginRight="10dp"  
            android:layout_toRightOf="@+id/ivPopUp"  
            android:background="@drawable/chat_send_btn"  
            android:gravity="center"  
            android:text="按住说话"  
            android:visibility="gone" />  
    </RelativeLayout>  
      
    <!-- 聊天内容 listview -->  
    <ListView  
        android:id="@+id/listview"  
        android:layout_width="fill_parent"  
        android:layout_height="fill_parent"  
        android:layout_above="@id/rl_bottom"  
        android:layout_below="@id/rl_layout"  
        android:cacheColorHint="#0000"  
        android:divider="@null"  
        android:dividerHeight="5dp"  
        android:scrollbarStyle="outsideOverlay"  
        android:stackFromBottom="true" />  
      
    <!-- 录音显示UI层 -->  
    <LinearLayout  
        android:id="@+id/rcChat_popup"  
        android:layout_width="fill_parent"  
        android:layout_height="fill_parent"  
        android:gravity="center"  
        android:visibility="gone" >  
  
        <include  
            android:layout_width="wrap_content"  
            android:layout_height="wrap_content"  
            android:layout_gravity="center"  
            layout="@layout/voice_rcd_hint_window" />  
    </LinearLayout>  
  
</RelativeLayout>  
 

package com.example.voice_rcd;  
  
import java.io.IOException;  
  
import android.media.MediaRecorder;  
import android.os.Environment;  
  
public  class SoundMeter {  
    static final private double EMA_FILTER = 0.6;  
  
    private MediaRecorder mRecorder = null;  
    private double mEMA = 0.0;  
  
    public void start(String name) {  
        if (!Environment.getExternalStorageState().equals(  
                android.os.Environment.MEDIA_MOUNTED)) {  
            return;  
        }  
        if (mRecorder == null) {  
            mRecorder = new MediaRecorder();  
            mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);  
            mRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);  
            mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);  
            mRecorder.setOutputFile(android.os.Environment.getExternalStorageDirectory()+"/"+name);  
            try {  
                mRecorder.prepare();  
                mRecorder.start();  
                  
                mEMA = 0.0;  
            } catch (IllegalStateException e) {  
                System.out.print(e.getMessage());  
            } catch (IOException e) {  
                System.out.print(e.getMessage());  
            }  
  
        }  
    }  
  
    public void stop() {  
        if (mRecorder != null) {  
            mRecorder.stop();  
            mRecorder.release();  
            mRecorder = null;  
        }  
    }  
  
    public void pause() {  
        if (mRecorder != null) {  
            mRecorder.stop();  
        }  
    }  
  
    public void start() {  
        if (mRecorder != null) {  
            mRecorder.start();  
        }  
    }  
  
    public double getAmplitude() {  
        if (mRecorder != null)  
            return (mRecorder.getMaxAmplitude() / 2700.0);  
        else  
            return 0;  
  
    }  
  
    public double getAmplitudeEMA() {  
        double amp = getAmplitude();  
        mEMA = EMA_FILTER * amp + (1.0 - EMA_FILTER) * mEMA;  
        return mEMA;  
    }  
}  

package com.example.voice_rcd;  
  
import java.io.File;  
import java.util.ArrayList;  
import java.util.Calendar;  
import java.util.List;  
  
import android.app.Activity;  
import android.os.Bundle;  
import android.os.Environment;  
import android.os.Handler;  
import android.os.SystemClock;  
import android.view.MotionEvent;  
import android.view.View;  
import android.view.View.OnClickListener;  
import android.view.View.OnTouchListener;  
import android.view.WindowManager;  
import android.view.animation.Animation;  
import android.view.animation.AnimationUtils;  
import android.widget.Button;  
import android.widget.EditText;  
import android.widget.ImageView;  
import android.widget.LinearLayout;  
import android.widget.ListView;  
import android.widget.RelativeLayout;  
import android.widget.TextView;  
import android.widget.Toast;  
  
public class MainActivity extends Activity implements OnClickListener {  
    /** Called when the activity is first created. */  
  
    private Button mBtnSend;  
    private TextView mBtnRcd;  
    private Button mBtnBack;  
    private EditText mEditTextContent;  
    private RelativeLayout mBottom;  
    private ListView mListView;  
    private ChatMsgViewAdapter mAdapter;  
    private List<ChatMsgEntity> mDataArrays = new ArrayList<ChatMsgEntity>();  
    private boolean isShosrt = false;  
    private LinearLayout voice_rcd_hint_loading, voice_rcd_hint_rcding,  
            voice_rcd_hint_tooshort;  
    private ImageView img1, sc_img1;  
    private SoundMeter mSensor;  
    private View rcChat_popup;  
    private LinearLayout del_re;  
    private ImageView chatting_mode_btn, volume;  
    private boolean btn_vocie = false;  
    private int flag = 1;  
    private Handler mHandler = new Handler();  
    private String voiceName;  
    private long startVoiceT, endVoiceT;  
  
    public void onCreate(Bundle savedInstanceState) {  
        super.onCreate(savedInstanceState);  
        setContentView(R.layout.chat);  
        // 启动activity时不自动弹出软键盘  
        getWindow().setSoftInputMode(  
                WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN);  
        initView();  
  
        initData();  
    }  
  
    public void initView() {  
        mListView = (ListView) findViewById(R.id.listview);  
        mBtnSend = (Button) findViewById(R.id.btn_send);  
        mBtnRcd = (TextView) findViewById(R.id.btn_rcd);  
        mBtnSend.setOnClickListener(this);  
        mBtnBack = (Button) findViewById(R.id.btn_back);  
        mBottom = (RelativeLayout) findViewById(R.id.btn_bottom);  
        mBtnBack.setOnClickListener(this);  
        chatting_mode_btn = (ImageView) this.findViewById(R.id.ivPopUp);  
        volume = (ImageView) this.findViewById(R.id.volume);  
        rcChat_popup = this.findViewById(R.id.rcChat_popup);  
        img1 = (ImageView) this.findViewById(R.id.img1);  
        sc_img1 = (ImageView) this.findViewById(R.id.sc_img1);  
        del_re = (LinearLayout) this.findViewById(R.id.del_re);  
        voice_rcd_hint_rcding = (LinearLayout) this  
                .findViewById(R.id.voice_rcd_hint_rcding);  
        voice_rcd_hint_loading = (LinearLayout) this  
                .findViewById(R.id.voice_rcd_hint_loading);  
        voice_rcd_hint_tooshort = (LinearLayout) this  
                .findViewById(R.id.voice_rcd_hint_tooshort);  
        mSensor = new SoundMeter();  
        mEditTextContent = (EditText) findViewById(R.id.et_sendmessage);  
          
        //语音文字切换按钮  
        chatting_mode_btn.setOnClickListener(new OnClickListener() {  
  
            public void onClick(View v) {  
  
                if (btn_vocie) {  
                    mBtnRcd.setVisibility(View.GONE);  
                    mBottom.setVisibility(View.VISIBLE);  
                    btn_vocie = false;  
                    chatting_mode_btn  
                            .setImageResource(R.drawable.chatting_setmode_msg_btn);  
  
                } else {  
                    mBtnRcd.setVisibility(View.VISIBLE);  
                    mBottom.setVisibility(View.GONE);  
                    chatting_mode_btn  
                            .setImageResource(R.drawable.chatting_setmode_voice_btn);  
                    btn_vocie = true;  
                }  
            }  
        });  
        mBtnRcd.setOnTouchListener(new OnTouchListener() {  
              
            public boolean onTouch(View v, MotionEvent event) {  
                //按下语音录制按钮时返回false执行父类OnTouch  
                return false;  
            }  
        });  
    }  
  
    private String[] msgArray = new String[] { "有人就有恩怨","有恩怨就有江湖","人就是江湖","你怎么退出？ ","生命中充满了巧合","两条平行线也会有相交的一天。"};  
  
    private String[] dataArray = new String[] { "2012-10-31 18:00",  
            "2012-10-31 18:10", "2012-10-31 18:11", "2012-10-31 18:20",  
            "2012-10-31 18:30", "2012-10-31 18:35"};  
    private final static int COUNT = 6;  
  
    public void initData() {  
        for (int i = 0; i < COUNT; i++) {  
            ChatMsgEntity entity = new ChatMsgEntity();  
            entity.setDate(dataArray[i]);  
            if (i % 2 == 0) {  
                entity.setName("白富美");  
                entity.setMsgType(true);  
            } else {  
                entity.setName("高富帅");  
                entity.setMsgType(false);  
            }  
  
            entity.setText(msgArray[i]);  
            mDataArrays.add(entity);  
        }  
  
        mAdapter = new ChatMsgViewAdapter(this, mDataArrays);  
        mListView.setAdapter(mAdapter);  
  
    }  
  
    public void onClick(View v) {  
        // TODO Auto-generated method stub  
        switch (v.getId()) {  
        case R.id.btn_send:  
            send();  
            break;  
        case R.id.btn_back:  
            finish();  
            break;  
        }  
    }  
  
    private void send() {  
        String contString = mEditTextContent.getText().toString();  
        if (contString.length() > 0) {  
            ChatMsgEntity entity = new ChatMsgEntity();  
            entity.setDate(getDate());  
            entity.setName("高富帅");  
            entity.setMsgType(false);  
            entity.setText(contString);  
  
            mDataArrays.add(entity);  
            mAdapter.notifyDataSetChanged();  
  
            mEditTextContent.setText("");  
  
            mListView.setSelection(mListView.getCount() - 1);  
        }  
    }  
  
    private String getDate() {  
        Calendar c = Calendar.getInstance();  
  
        String year = String.valueOf(c.get(Calendar.YEAR));  
        String month = String.valueOf(c.get(Calendar.MONTH));  
        String day = String.valueOf(c.get(Calendar.DAY_OF_MONTH) + 1);  
        String hour = String.valueOf(c.get(Calendar.HOUR_OF_DAY));  
        String mins = String.valueOf(c.get(Calendar.MINUTE));  
  
        StringBuffer sbBuffer = new StringBuffer();  
        sbBuffer.append(year + "-" + month + "-" + day + " " + hour + ":"  
                + mins);  
  
        return sbBuffer.toString();  
    }  
  
    //按下语音录制按钮时  
    @Override  
    public boolean onTouchEvent(MotionEvent event) {  
  
        if (!Environment.getExternalStorageDirectory().exists()) {  
            Toast.makeText(this, "No SDCard", Toast.LENGTH_LONG).show();  
            return false;  
        }  
  
        if (btn_vocie) {  
            System.out.println("1");  
            int[] location = new int[2];  
            mBtnRcd.getLocationInWindow(location); // 获取在当前窗口内的绝对坐标  
            int btn_rc_Y = location[1];  
            int btn_rc_X = location[0];  
            int[] del_location = new int[2];  
            del_re.getLocationInWindow(del_location);  
            int del_Y = del_location[1];  
            int del_x = del_location[0];  
            if (event.getAction() == MotionEvent.ACTION_DOWN && flag == 1) {  
                if (!Environment.getExternalStorageDirectory().exists()) {  
                    Toast.makeText(this, "No SDCard", Toast.LENGTH_LONG).show();  
                    return false;  
                }  
                System.out.println("2");  
                if (event.getY() > btn_rc_Y && event.getX() > btn_rc_X) {//判断手势按下的位置是否是语音录制按钮的范围内  
                    System.out.println("3");  
                    mBtnRcd.setBackgroundResource(R.drawable.voice_rcd_btn_pressed);  
                    rcChat_popup.setVisibility(View.VISIBLE);  
                    voice_rcd_hint_loading.setVisibility(View.VISIBLE);  
                    voice_rcd_hint_rcding.setVisibility(View.GONE);  
                    voice_rcd_hint_tooshort.setVisibility(View.GONE);  
                    mHandler.postDelayed(new Runnable() {  
                        public void run() {  
                            if (!isShosrt) {  
                                voice_rcd_hint_loading.setVisibility(View.GONE);  
                                voice_rcd_hint_rcding  
                                        .setVisibility(View.VISIBLE);  
                            }  
                        }  
                    }, 300);  
                    img1.setVisibility(View.VISIBLE);  
                    del_re.setVisibility(View.GONE);  
                    startVoiceT = SystemClock.currentThreadTimeMillis();  
                    voiceName = startVoiceT + ".amr";  
                    start(voiceName);  
                    flag = 2;  
                }  
            } else if (event.getAction() == MotionEvent.ACTION_UP && flag == 2) {//松开手势时执行录制完成  
                System.out.println("4");  
                mBtnRcd.setBackgroundResource(R.drawable.voice_rcd_btn_nor);  
                if (event.getY() >= del_Y  
                        && event.getY() <= del_Y + del_re.getHeight()  
                        && event.getX() >= del_x  
                        && event.getX() <= del_x + del_re.getWidth()) {  
                    rcChat_popup.setVisibility(View.GONE);  
                    img1.setVisibility(View.VISIBLE);  
                    del_re.setVisibility(View.GONE);  
                    stop();  
                    flag = 1;  
                    File file = new File(android.os.Environment.getExternalStorageDirectory()+"/"  
                                    + voiceName);  
                    if (file.exists()) {  
                        file.delete();  
                    }  
                } else {  
  
                    voice_rcd_hint_rcding.setVisibility(View.GONE);  
                    stop();  
                    endVoiceT = SystemClock.currentThreadTimeMillis();  
                    flag = 1;  
                    int time = (int) ((endVoiceT - startVoiceT) / 1000);  
                    if (time < 1) {  
                        isShosrt = true;  
                        voice_rcd_hint_loading.setVisibility(View.GONE);  
                        voice_rcd_hint_rcding.setVisibility(View.GONE);  
                        voice_rcd_hint_tooshort.setVisibility(View.VISIBLE);  
                        mHandler.postDelayed(new Runnable() {  
                            public void run() {  
                                voice_rcd_hint_tooshort  
                                        .setVisibility(View.GONE);  
                                rcChat_popup.setVisibility(View.GONE);  
                                isShosrt = false;  
                            }  
                        }, 500);  
                        return false;  
                    }  
                    ChatMsgEntity entity = new ChatMsgEntity();  
                    entity.setDate(getDate());  
                    entity.setName("高富帅");  
                    entity.setMsgType(false);  
                    entity.setTime(time+"\"");  
                    entity.setText(voiceName);  
                    mDataArrays.add(entity);  
                    mAdapter.notifyDataSetChanged();  
                    mListView.setSelection(mListView.getCount() - 1);  
                    rcChat_popup.setVisibility(View.GONE);  
  
                }  
            }  
            if (event.getY() < btn_rc_Y) {//手势按下的位置不在语音录制按钮的范围内  
                System.out.println("5");  
                Animation mLitteAnimation = AnimationUtils.loadAnimation(this,  
                        R.anim.cancel_rc);  
                Animation mBigAnimation = AnimationUtils.loadAnimation(this,  
                        R.anim.cancel_rc2);  
                img1.setVisibility(View.GONE);  
                del_re.setVisibility(View.VISIBLE);  
                del_re.setBackgroundResource(R.drawable.voice_rcd_cancel_bg);  
                if (event.getY() >= del_Y  
                        && event.getY() <= del_Y + del_re.getHeight()  
                        && event.getX() >= del_x  
                        && event.getX() <= del_x + del_re.getWidth()) {  
                    del_re.setBackgroundResource(R.drawable.voice_rcd_cancel_bg_focused);  
                    sc_img1.startAnimation(mLitteAnimation);  
                    sc_img1.startAnimation(mBigAnimation);  
                }  
            } else {  
  
                img1.setVisibility(View.VISIBLE);  
                del_re.setVisibility(View.GONE);  
                del_re.setBackgroundResource(0);  
            }  
        }  
        return super.onTouchEvent(event);  
    }  
  
    private static final int POLL_INTERVAL = 300;  
  
    private Runnable mSleepTask = new Runnable() {  
        public void run() {  
            stop();  
        }  
    };  
    private Runnable mPollTask = new Runnable() {  
        public void run() {  
            double amp = mSensor.getAmplitude();  
            updateDisplay(amp);  
            mHandler.postDelayed(mPollTask, POLL_INTERVAL);  
  
        }  
    };  
  
    private void start(String name) {  
        mSensor.start(name);  
        mHandler.postDelayed(mPollTask, POLL_INTERVAL);  
    }  
  
    private void stop() {  
        mHandler.removeCallbacks(mSleepTask);  
        mHandler.removeCallbacks(mPollTask);  
        mSensor.stop();  
        volume.setImageResource(R.drawable.amp1);  
    }  
  
    private void updateDisplay(double signalEMA) {  
          
        switch ((int) signalEMA) {  
        case 0:  
        case 1:  
            volume.setImageResource(R.drawable.amp1);  
            break;  
        case 2:  
        case 3:  
            volume.setImageResource(R.drawable.amp2);  
              
            break;  
        case 4:  
        case 5:  
            volume.setImageResource(R.drawable.amp3);  
            break;  
        case 6:  
        case 7:  
            volume.setImageResource(R.drawable.amp4);  
            break;  
        case 8:  
        case 9:  
            volume.setImageResource(R.drawable.amp5);  
            break;  
        case 10:  
        case 11:  
            volume.setImageResource(R.drawable.amp6);  
            break;  
        default:  
            volume.setImageResource(R.drawable.amp7);  
            break;  
        }  
    }  
  
    public void head_xiaohei(View v) { // 标题栏 返回按钮  
  
    }  
}  

package com.example.voice_rcd;  
  
import java.util.List;  
  
import android.content.Context;  
import android.media.MediaPlayer;  
import android.media.MediaPlayer.OnCompletionListener;  
import android.view.LayoutInflater;  
import android.view.View;  
import android.view.View.OnClickListener;  
import android.view.ViewGroup;  
import android.widget.BaseAdapter;  
import android.widget.TextView;  
  
public class ChatMsgViewAdapter extends BaseAdapter {  
  
    public static interface IMsgViewType {  
        int IMVT_COM_MSG = 0;  
        int IMVT_TO_MSG = 1;  
    }  
  
    private static final String TAG = ChatMsgViewAdapter.class.getSimpleName();  
  
    private List<ChatMsgEntity> coll;  
  
    private Context ctx;  
  
    private LayoutInflater mInflater;  
    private MediaPlayer mMediaPlayer = new MediaPlayer();  
  
    public ChatMsgViewAdapter(Context context, List<ChatMsgEntity> coll) {  
        ctx = context;  
        this.coll = coll;  
        mInflater = LayoutInflater.from(context);  
    }  
  
    public int getCount() {  
        return coll.size();  
    }  
  
    public Object getItem(int position) {  
        return coll.get(position);  
    }  
  
    public long getItemId(int position) {  
        return position;  
    }  
  
    public int getItemViewType(int position) {  
        // TODO Auto-generated method stub  
        ChatMsgEntity entity = coll.get(position);  
  
        if (entity.getMsgType()) {  
            return IMsgViewType.IMVT_COM_MSG;  
        } else {  
            return IMsgViewType.IMVT_TO_MSG;  
        }  
  
    }  
  
    public int getViewTypeCount() {  
        // TODO Auto-generated method stub  
        return 2;  
    }  
  
    public View getView(int position, View convertView, ViewGroup parent) {  
  
        final ChatMsgEntity entity = coll.get(position);  
        boolean isComMsg = entity.getMsgType();  
  
        ViewHolder viewHolder = null;  
        if (convertView == null) {  
            if (isComMsg) {  
                convertView = mInflater.inflate(  
                        R.layout.chatting_item_msg_text_left, null);  
            } else {  
                convertView = mInflater.inflate(  
                        R.layout.chatting_item_msg_text_right, null);  
            }  
  
            viewHolder = new ViewHolder();  
            viewHolder.tvSendTime = (TextView) convertView  
                    .findViewById(R.id.tv_sendtime);  
            viewHolder.tvUserName = (TextView) convertView  
                    .findViewById(R.id.tv_username);  
            viewHolder.tvContent = (TextView) convertView  
                    .findViewById(R.id.tv_chatcontent);  
            viewHolder.tvTime = (TextView) convertView  
                    .findViewById(R.id.tv_time);  
            viewHolder.isComMsg = isComMsg;  
  
            convertView.setTag(viewHolder);  
        } else {  
            viewHolder = (ViewHolder) convertView.getTag();  
        }  
  
        viewHolder.tvSendTime.setText(entity.getDate());  
          
        if (entity.getText().contains(".amr")) {  
            viewHolder.tvContent.setText("");  
            viewHolder.tvContent.setCompoundDrawablesWithIntrinsicBounds(0, 0, R.drawable.chatto_voice_playing, 0);  
            viewHolder.tvTime.setText(entity.getTime());  
        } else {  
            viewHolder.tvContent.setText(entity.getText());           
            viewHolder.tvContent.setCompoundDrawablesWithIntrinsicBounds(0, 0, 0, 0);  
            viewHolder.tvTime.setText("");  
        }  
        viewHolder.tvContent.setOnClickListener(new OnClickListener() {  
              
            public void onClick(View v) {  
                if (entity.getText().contains(".amr")) {  
                    playMusic(android.os.Environment.getExternalStorageDirectory()+"/"+entity.getText()) ;  
                }  
            }  
        });  
        viewHolder.tvUserName.setText(entity.getName());  
          
        return convertView;  
    }  
  
    static class ViewHolder {  
        public TextView tvSendTime;  
        public TextView tvUserName;  
        public TextView tvContent;  
        public TextView tvTime;  
        public boolean isComMsg = true;  
    }  
  
    /** 
     * @Description 
     * @param name 
     */  
    private void playMusic(String name) {  
        try {  
            if (mMediaPlayer.isPlaying()) {  
                mMediaPlayer.stop();  
            }  
            mMediaPlayer.reset();  
            mMediaPlayer.setDataSource(name);  
            mMediaPlayer.prepare();  
            mMediaPlayer.start();  
            mMediaPlayer.setOnCompletionListener(new OnCompletionListener() {  
                public void onCompletion(MediaPlayer mp) {  
  
                }  
            });  
  
        } catch (Exception e) {  
            e.printStackTrace();  
        }  
  
    }  
  
    private void stop() {  
  
    }  
  
}