android仿微信聊天界面 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() { 
 
 } 
 
}