Android仿微信语音聊天功能

package com.xuliugen.weichat;

import java.io.File;
import java.io.IOException;
import java.util.UUID;

import android.media.MediaRecorder;

public class AudioManager {
 private MediaRecorder mMediaRecorder;
 private String mDir;
 private String mCurrentFilePath;

 private static AudioManager mInstance;

 private boolean isPrepare;

 private AudioManager(String dir) {
  mDir = dir;
 }

 public static AudioManager getInstance(String dir) {
  if (mInstance == null) {
   synchronized (AudioManager.class) {
    if (mInstance == null) {
     mInstance = new AudioManager(dir);
    }
   }
  }
  return mInstance;
 }

 /**
  * 使用接口 用于回调
  */
 public interface AudioStateListener {
  void wellPrepared();
 }

 public AudioStateListener mAudioStateListener;

 /**
  * 回调方法
  */
 public void setOnAudioStateListener(AudioStateListener listener) {
  mAudioStateListener = listener;
 }

 // 去准备
 public void prepareAudio() {
  try {
   isPrepare = false;
   File dir = new File(mDir);
   if (!dir.exists()) {
    dir.mkdirs();
   }
   String fileName = generateFileName();
   File file = new File(dir, fileName);

   mCurrentFilePath =file.getAbsolutePath();

   mMediaRecorder = new MediaRecorder();
   // 设置输出文件
   mMediaRecorder.setOutputFile(dir.getAbsolutePath());
   // 设置MediaRecorder的音频源为麦克风
   mMediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
   // 设置音频格式
   mMediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.RAW_AMR);
   // 设置音频编码
   mMediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);

   // 准备录音
   mMediaRecorder.prepare();
   // 开始
   mMediaRecorder.start();
   // 准备结束
   isPrepare = true;
   if (mAudioStateListener != null) {
    mAudioStateListener.wellPrepared();
   }

  } catch (IllegalStateException e) {
   e.printStackTrace();
  } catch (IOException e) {
   e.printStackTrace();
  }

 }

 /**
  * 随机生成文件的名称
  */
 private String generateFileName() {
  return UUID.randomUUID().toString() + ".amr";
 }

 public int getVoiceLevel(int maxlevel) {
  if (isPrepare) {
   try {
    // mMediaRecorder.getMaxAmplitude() 1~32767
    return maxlevel * mMediaRecorder.getMaxAmplitude() / 32768 + 1;
   } catch (Exception e) {
   }
  }
  return 1;
 }

 /**
  * 释放资源
  */
 public void release() {
  //mMediaRecorder.stop();
  mMediaRecorder.reset();
  mMediaRecorder = null;
 }

 /**
  * 取消录音
  */
 public void cancel() {
  release();
  if (mCurrentFilePath != null) {
   File file = new File(mCurrentFilePath);
   file.delete();
   mCurrentFilePath = null;
  }

 }

 public String getCurrentFilePath() {

  return mCurrentFilePath;
 }
}

package com.xuliugen.weichat;

import android.content.Context;
import android.os.Environment;
import android.os.Handler;
import android.os.Message;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import android.widget.Button;

import com.xuliugen.weichat.R;
import com.xuliugen.weichat.AudioManager.AudioStateListener;

public class AudioRecorderButton extends Button {

 private static final int STATE_NORMAL = 1;// 默认的状态
 private static final int STATE_RECORDING = 2;// 正在录音
 private static final int STATE_WANT_TO_CANCEL = 3;// 希望取消

 private int mCurrentState = STATE_NORMAL; // 当前的状态
 private boolean isRecording = false;// 已经开始录音

 private static final int DISTANCE_Y_CANCEL = 50;

 private DialogManager mDialogManager;
 private AudioManager mAudioManager;

 private float mTime;
 // 是否触发longClick
 private boolean mReady;

 private static final int MSG_AUDIO_PREPARED = 0x110;
 private static final int MSG_VOICE_CHANGED = 0x111;
 private static final int MSG_DIALOG_DIMISS = 0x112;

 /*
  * 获取音量大小的线程
  */
 private Runnable mGetVoiceLevelRunnable = new Runnable() {

  public void run() {
   while (isRecording) {
    try {
     Thread.sleep(100);
     mTime += 0.1f;
     mHandler.sendEmptyMessage(MSG_VOICE_CHANGED);
    } catch (InterruptedException e) {
     e.printStackTrace();
    }
   }
  }
 };

 private Handler mHandler = new Handler() {

  @Override
  public void handleMessage(Message msg) {
   switch (msg.what) {
   case MSG_AUDIO_PREPARED:
    // 显示對話框在开始录音以后
    mDialogManager.showRecordingDialog();
    isRecording = true;
    // 开启一个线程
    new Thread(mGetVoiceLevelRunnable).start();
    break;

   case MSG_VOICE_CHANGED:
    mDialogManager.updateVoiceLevel(mAudioManager.getVoiceLevel(7));
    break;

   case MSG_DIALOG_DIMISS:
    mDialogManager.dimissDialog();
    break;

   }

   super.handleMessage(msg);
  }
 };

 /**
  * 以下2个方法是构造方法
  */
 public AudioRecorderButton(Context context, AttributeSet attrs) {
  super(context, attrs);
  mDialogManager = new DialogManager(context);

  String dir = "/storage/sdcard0/my_weixin";
  //String dir = Environment.getExternalStorageDirectory()+"/my_weixin";

  mAudioManager = AudioManager.getInstance(dir);
  mAudioManager.setOnAudioStateListener(new AudioStateListener() {

   public void wellPrepared() {
    mHandler.sendEmptyMessage(MSG_AUDIO_PREPARED);
   }
  });

  // 由于这个类是button所以在构造方法中添加监听事件
  setOnLongClickListener(new OnLongClickListener() {

   public boolean onLongClick(View v) {
    mReady = true;

    mAudioManager.prepareAudio();

    return false;
   }
  });
 }

 public AudioRecorderButton(Context context) {
  this(context, null);
 }

 /**
  * 录音完成后的回调
  */
 public interface AudioFinishRecorderListener {
  void onFinish(float seconds, String filePath);
 }

 private AudioFinishRecorderListener audioFinishRecorderListener;

 public void setAudioFinishRecorderListener(AudioFinishRecorderListener listener) {
  audioFinishRecorderListener = listener;
 }

 /**
  * 屏幕的触摸事件
  */
 @Override
 public boolean onTouchEvent(MotionEvent event) {

  int action = event.getAction();
  int x = (int) event.getX();// 获得x轴坐标
  int y = (int) event.getY();// 获得y轴坐标

  switch (action) {
  case MotionEvent.ACTION_DOWN:
   changeState(STATE_RECORDING);
   break;
  case MotionEvent.ACTION_MOVE:

   if (isRecording) {
    // 如果想要取消，根据x,y的坐标看是否需要取消
    if (wantToCancle(x, y)) {
     changeState(STATE_WANT_TO_CANCEL);
    } else {
     changeState(STATE_RECORDING);
    }
   }

   break;
  case MotionEvent.ACTION_UP:
   if (!mReady) {
    reset();
    return super.onTouchEvent(event);
   }
   if (!isRecording || mTime < 0.6f) {
    mDialogManager.tooShort();
    mAudioManager.cancel();
    mHandler.sendEmptyMessageDelayed(MSG_DIALOG_DIMISS, 1000);// 延迟显示对话框
   } else if (mCurrentState == STATE_RECORDING) { // 正在录音的时候，结束
    mDialogManager.dimissDialog();
    mAudioManager.release();

    if (audioFinishRecorderListener != null) {
     audioFinishRecorderListener.onFinish(mTime,mAudioManager.getCurrentFilePath());
    }

   } else if (mCurrentState == STATE_WANT_TO_CANCEL) { // 想要取消
    mDialogManager.dimissDialog();
    mAudioManager.cancel();
   }
   reset();
   break;

  }
  return super.onTouchEvent(event);
 }

 /**
  * 恢复状态及标志位
  */
 private void reset() {
  isRecording = false;
  mTime = 0;
  mReady = false;
  changeState(STATE_NORMAL);
 }

 private boolean wantToCancle(int x, int y) {
  if (x < 0 || x > getWidth()) { // 超过按钮的宽度
   return true;
  }
  // 超过按钮的高度
  if (y < -DISTANCE_Y_CANCEL || y > getHeight() + DISTANCE_Y_CANCEL) {
   return true;
  }

  return false;
 }

 /**
  * 改变
  */
 private void changeState(int state) {
  if (mCurrentState != state) {
   mCurrentState = state;
   switch (state) {
   case STATE_NORMAL:
    setBackgroundResource(R.drawable.btn_recorder_normal);
    setText(R.string.str_recorder_normal);
    break;

   case STATE_RECORDING:
    setBackgroundResource(R.drawable.btn_recorder_recording);
    setText(R.string.str_recorder_recording);
    if (isRecording) {
     mDialogManager.recording();
    }
    break;

   case STATE_WANT_TO_CANCEL:
    setBackgroundResource(R.drawable.btn_recorder_recording);
    setText(R.string.str_recorder_want_cancel);

    mDialogManager.wantToCancel();
    break;
   }
  }
 }
}

package com.xuliugen.weichat;

import android.app.AlertDialog;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.ImageView;
import android.widget.TextView;

import com.xuliugen.weichat.R;

/**
 * 用于管理Dialog
 * 
 * @author xuliugen
 * 
 */
public class DialogManager {

 private AlertDialog.Builder builder;
 private ImageView mIcon;
 private ImageView mVoice;
 private TextView mLable;

 private Context mContext;

  private AlertDialog dialog;//用于取消AlertDialog.Builder

 /**
  * 构造方法 传入上下文
  */
 public DialogManager(Context context) {
  this.mContext = context;
 }

 // 显示录音的对话框
 public void showRecordingDialog() {

  builder = new AlertDialog.Builder(mContext, R.style.AudioDialog);
  LayoutInflater inflater = LayoutInflater.from(mContext);
  View view = inflater.inflate(R.layout.dialog_recorder,null);

  mIcon = (ImageView) view.findViewById(R.id.id_recorder_dialog_icon);
  mVoice = (ImageView) view.findViewById(R.id.id_recorder_dialog_voice);
  mLable = (TextView) view.findViewById(R.id.id_recorder_dialog_label);

  builder.setView(view);
  builder.create();
  dialog = builder.show();
 }

 public void recording(){
  if(dialog != null && dialog.isShowing()){ //显示状态
   mIcon.setVisibility(View.VISIBLE);
   mVoice.setVisibility(View.VISIBLE);
   mLable.setVisibility(View.VISIBLE);

   mIcon.setImageResource(R.drawable.recorder);
   mLable.setText("手指上滑，取消发送");
  }
 }

 // 显示想取消的对话框
 public void wantToCancel() {
  if(dialog != null && dialog.isShowing()){ //显示状态
   mIcon.setVisibility(View.VISIBLE);
   mVoice.setVisibility(View.GONE);
   mLable.setVisibility(View.VISIBLE);

   mIcon.setImageResource(R.drawable.cancel);
   mLable.setText("松开手指，取消发送");
  }
 }

 // 显示时间过短的对话框
 public void tooShort() {
  if(dialog != null && dialog.isShowing()){ //显示状态
   mIcon.setVisibility(View.VISIBLE);
   mVoice.setVisibility(View.GONE);
   mLable.setVisibility(View.VISIBLE);

   mIcon.setImageResource(R.drawable.voice_to_short);
   mLable.setText("录音时间过短");
  }
 }

 // 显示取消的对话框
 public void dimissDialog() {
  if(dialog != null && dialog.isShowing()){ //显示状态
   dialog.dismiss();
   dialog = null;
  }
 }

 // 显示更新音量级别的对话框
 public void updateVoiceLevel(int level) {
  if(dialog != null && dialog.isShowing()){ //显示状态
//   mIcon.setVisibility(View.VISIBLE);
//   mVoice.setVisibility(View.VISIBLE);
//   mLable.setVisibility(View.VISIBLE);

   //设置图片的id
   int resId = mContext.getResources().getIdentifier("v"+level, "drawable", mContext.getPackageName());
   mVoice.setImageResource(resId);
  }
 }

}

package com.xuliugen.weichat;

import java.util.ArrayList;
import java.util.List;

import com.xuliugen.weichat.AudioRecorderButton.AudioFinishRecorderListener;

import android.app.Activity;
import android.graphics.drawable.AnimationDrawable;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.AdapterView.OnItemClickListener;

public class MainActivity extends Activity {
 private ListView mListView;

 private ArrayAdapter<Recorder> mAdapter;
 private List<Recorder> mDatas = new ArrayList<MainActivity.Recorder>();

 private AudioRecorderButton mAudioRecorderButton;

 private View animView;

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);

  mListView = (ListView) findViewById(R.id.id_listview);
  mAudioRecorderButton = (AudioRecorderButton) findViewById(R.id.id_recorder_button);


  mAudioRecorderButton.setAudioFinishRecorderListener(new AudioFinishRecorderListener() {

   public void onFinish(float seconds, String filePath) {
    Recorder recorder = new Recorder(seconds, filePath);
    mDatas.add(recorder);
    mAdapter.notifyDataSetChanged(); //通知更新的内容
    mListView.setSelection(mDatas.size() - 1); //将lisview设置为最后一个
   }
  });

  mAdapter = new RecoderAdapter(this, mDatas);
  mListView.setAdapter(mAdapter);

  //listView的item点击事件
  mListView.setOnItemClickListener(new OnItemClickListener() {

   public void onItemClick(AdapterView<?> arg0, View view,int position, long id) {
    // 播放动画（帧动画）
    if (animView != null) {
     animView.setBackgroundResource(R.drawable.adj);
     animView = null;
    }
    animView = view.findViewById(R.id.id_recoder_anim);
    animView.setBackgroundResource(R.drawable.play_anim);
    AnimationDrawable animation = (AnimationDrawable) animView.getBackground();
    animation.start();
    // 播放录音
    MediaManager.playSound(mDatas.get(position).filePath,new MediaPlayer.OnCompletionListener() {

      public void onCompletion(MediaPlayer mp) {
       animView.setBackgroundResource(R.drawable.adj);
      }
     });
   }
  });
 }

 @Override
 protected void onPause() {
  super.onPause();
  MediaManager.pause();
 }

 @Override
 protected void onResume() {
  super.onResume();
  MediaManager.resume();
 }

 @Override
 protected void onDestroy() {
  super.onDestroy();
  MediaManager.release();
 }

 class Recorder {
  float time;
  String filePath;

  public Recorder(float time, String filePath) {
   super();
   this.time = time;
   this.filePath = filePath;
  }

  public float getTime() {
   return time;
  }

  public void setTime(float time) {
   this.time = time;
  }

  public String getFilePath() {
   return filePath;
  }

  public void setFilePath(String filePath) {
   this.filePath = filePath;
  }

 }

}

package com.xuliugen.weichat;

import android.media.AudioManager;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnCompletionListener;
import android.media.MediaPlayer.OnErrorListener;

public class MediaManager {

 private static MediaPlayer mMediaPlayer; 
 private static boolean isPause;

 /**
  * 播放音乐
  * @param filePath
  * @param onCompletionListener
  */
 public static void playSound(String filePath,OnCompletionListener onCompletionListener) {
  if (mMediaPlayer == null) {
   mMediaPlayer = new MediaPlayer();

   //设置一个error监听器
   mMediaPlayer.setOnErrorListener(new OnErrorListener() {

    public boolean onError(MediaPlayer arg0, int arg1, int arg2) {
     mMediaPlayer.reset();
     return false;
    }
   });
  } else {
   mMediaPlayer.reset();
  }

  try {
   mMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
   mMediaPlayer.setOnCompletionListener(onCompletionListener);
   mMediaPlayer.setDataSource(filePath);
   mMediaPlayer.prepare();
   mMediaPlayer.start();
  } catch (Exception e) {

  }
 }

 /**
  * 暂停播放
  */
 public static void pause() {
  if (mMediaPlayer != null && mMediaPlayer.isPlaying()) { //正在播放的时候
   mMediaPlayer.pause();
   isPause = true;
  }
 }

 /**
  * 当前是isPause状态
  */
 public static void resume() {
  if (mMediaPlayer != null && isPause) { 
   mMediaPlayer.start();
   isPause = false;
  }
 }

 /**
  * 释放资源
  */
 public static void release() {
  if (mMediaPlayer != null) {
   mMediaPlayer.release();
   mMediaPlayer = null;
  }
 }
}

package com.xuliugen.weichat;

import java.util.List;

import android.content.Context;
import android.util.DisplayMetrics;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.widget.ArrayAdapter;
import android.widget.TextView;

import com.xuliugen.weichat.MainActivity.Recorder;

public class RecoderAdapter extends ArrayAdapter<Recorder> {

 private Context mContext;
 private List<Recorder> mDatas;

 private int mMinItemWidth; //最小的item宽度
 private int mMaxItemWidth; //最大的item宽度
 private LayoutInflater mInflater;

 public RecoderAdapter(Context context, List<Recorder> datas) {
  super(context, -1, datas);

  mContext = context;
  mDatas = datas;

  //获取屏幕的宽度
  WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
  DisplayMetrics outMetrics = new DisplayMetrics();
  wm.getDefaultDisplay().getMetrics(outMetrics);
  mMaxItemWidth = (int) (outMetrics.widthPixels * 0.7f);
  mMinItemWidth = (int) (outMetrics.widthPixels * 0.15f);

  mInflater = LayoutInflater.from(context);
 }

 /**
  * 定义一个ViewHolder
  */
 private class ViewHolder {
  TextView seconds; // 时间
  View length; // 长度
 }

 @Override
 public View getView(int position, View convertView, ViewGroup parent) {
  ViewHolder holder = null;
  if (convertView == null) {
   convertView = mInflater.inflate(R.layout.item_recoder, parent,false);
   holder = new ViewHolder();
   holder.seconds = (TextView) convertView.findViewById(R.id.id_recoder_time);
   holder.length = convertView.findViewById(R.id.id_recoder_lenght);

   convertView.setTag(holder);

  } else {
   holder = (ViewHolder) convertView.getTag();
  }
  holder.seconds.setText(Math.round(getItem(position).time) + "\"");
  ViewGroup.LayoutParams lp = holder.length.getLayoutParams();
  lp.width = (int) (mMinItemWidth + (mMaxItemWidth / 60f)* getItem(position).time);
  return convertView;
 }
}