Android仿微信语音消息的录制和播放功能

class AudioRecorderButton{
 onTouchEvent(){
 DOWN:
  changeButtonState(STATE_RECORDING);
          | DialogManager.showDialog(RECORDING)
  触发LongClick事件(AudioManager.prepare() --> end prepared --> |       );
          | getVoiceLevel();//开启一个线程，更新Dialog上的音量等级 
 MOVE:
  if(wantCancel(x,y)){
  DialogManager.showDialog(WANT_TO_CANCEL);更新Dialog
  changeButtonState(STATE_WANT_TO_CANCEL);更新Button状态
  }else{
  DialogManager.showDialog(WANT_TO_CANCEL);
  changeButtonState(STATE_RECORDING);
  }
  UP:
  if(wantCancel == curState){//当前状态是想取消状态
  AudioManager.cancel();
  }
  if(STATE_RECORDING = curState){
  if(tooShort){//判断录制时长，如果录制时间过短
   DialogManager.showDialog(TOO_SHORT);
  }
  AudioManager.release();
  callbackActivity(url,time);//(当前录音文件路径，时长)
  }
 }
}

import android.media.*;
import java.io.IOException;
/**
 * 播放管理类
 */
public class MediaManager {
 private static MediaPlayer mMediaPlayer;
 private static boolean isPause;
 public static void playSound(String filePath, MediaPlayer.OnCompletionListener onCompletionListener) {
 if (mMediaPlayer == null) {
  mMediaPlayer = new MediaPlayer();
  mMediaPlayer.setOnErrorListener(new MediaPlayer.OnErrorListener() {
  @Override
  public boolean onError(MediaPlayer mp, int what, int extra) {
   mMediaPlayer.reset();
   return false;
  }
  });
 } else {
  mMediaPlayer.reset();
 }
 try {
  mMediaPlayer.setAudioStreamType(android.media.AudioManager.STREAM_MUSIC);
  mMediaPlayer.setOnCompletionListener(onCompletionListener);
  mMediaPlayer.setDataSource(filePath);
  mMediaPlayer.prepare();
  mMediaPlayer.start();
 } catch (IOException e) {
  e.printStackTrace();
 }
 }
 public static void pause(){
 if(mMediaPlayer != null && mMediaPlayer.isPlaying()){
  mMediaPlayer.pause();
  isPause = true;
 }
 }
 public static void resume(){
 if(mMediaPlayer != null && isPause){
  mMediaPlayer.start();
  isPause = false;
 }
 }
 public static void release(){
 if(mMediaPlayer != null){
  mMediaPlayer.release();
  mMediaPlayer = null;
 }
 }
}

import android.app.Dialog;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.ImageView;
import android.widget.TextView;
import com.tiddlerliu.wxrecorder.R;
/**
 * Dialog管理类
 */
public class DialogManager {
 private Dialog mDialog;
 private ImageView mIcon;
 private ImageView mVoice;
 private TextView mLabel;
 private Context mContext;
 public DialogManager(Context context) {
 mContext = context;
 }
 /**
 * 显示Dialog
 */
 public void showRecordingDialog(){
 //将布局应用于Dialog
 mDialog = new Dialog(mContext, R.style.Theme_AudioDialog);
 LayoutInflater inflater = LayoutInflater.from(mContext);
 View view = inflater.inflate(R.layout.dialog_recorder,null);
 mDialog.setContentView(view);
 //成员控件赋值
 mIcon = (ImageView) mDialog.findViewById(R.id.recorder_dialog_icon);
 mVoice = (ImageView) mDialog.findViewById(R.id.recorder_dialog_voice);
 mLabel = (TextView) mDialog.findViewById(R.id.recorder_dialog_label);
 mDialog.show();
 }
 public void recording(){
 if(mDialog != null && mDialog.isShowing()){
  mIcon.setVisibility(View.VISIBLE);
  mVoice.setVisibility(View.VISIBLE);
  mLabel.setVisibility(View.VISIBLE);
  mIcon.setImageResource(R.mipmap.recorder);
  mLabel.setText("手指上滑，取消发送");
 }
 }
 public void wantToCancel(){
 if(mDialog != null && mDialog.isShowing()){
  mIcon.setVisibility(View.VISIBLE);
  mVoice.setVisibility(View.GONE);
  mLabel.setVisibility(View.VISIBLE);
  mIcon.setImageResource(R.mipmap.cancel);
  mLabel.setText("松开手指，取消发送");
 }
 }
 public void tooShort(){
 if(mDialog != null && mDialog.isShowing()){
  mIcon.setVisibility(View.VISIBLE);
  mVoice.setVisibility(View.GONE);
  mLabel.setVisibility(View.VISIBLE);
  mIcon.setImageResource(R.mipmap.voice_to_short);
  mLabel.setText("录音时间过短");
 }
 }
 public void dismissDialog(){
 if(mDialog != null && mDialog.isShowing()){
  mDialog.dismiss();
  mDialog = null;
 }
 }
 /**
 * 通过level更新音量资源图片
 * @param level
 */
 public void updateVoiceLevel(int level){
 if(mDialog != null && mDialog.isShowing()){
  int resId = mContext.getResources().getIdentifier("v"+level,"mipmap",mContext.getPackageName());
  mVoice.setImageResource(resId);
 }
 }
}

<uses-permission android:name="android.permission.RECORD_AUDIO"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

import android.media.MediaRecorder;
import java.io.File;
import java.io.IOException;
import java.util.UUID;
/**
 * 录音管理类
 */
public class AudioManager {
 private String mDir;//文件夹名称
 private MediaRecorder mMediaRecorder;
 private String mCurrentFilePath;//文件储存路径
 private static AudioManager mInstance;
 //表明MediaRecorder是否进入prepare状态（状态为true才能调用stop和release方法）
 private boolean isPrepared;
 public AudioManager(String dir) {
 mDir = dir;
 }
 public String getCurrentFilePath() {
 return mCurrentFilePath;
 }
 /**
 * 准备完毕接口
 */
 public interface AudioStateListener{
 void wellPrepared();
 }
 public AudioStateListener mListener;
 public void setOnAudioStateListener(AudioStateListener listener){
 mListener = listener;
 }
 /**
 * 单例
 * @return AudioManager
 */
 public static AudioManager getInstance(String dir){
 if (mInstance == null){
  synchronized (AudioManager.class){
  if(mInstance == null){
   mInstance = new AudioManager(dir);
  }
  }
 }
 return mInstance;
 }
 /**
 * 准备
 */
 public void prepareAudio() {
 try {
  isPrepared = false;
  File dir = new File(mDir);//创建文件夹
  if (!dir.exists()) {
  dir.mkdirs();
  }
  String fileName = generateFileName();//随机生成文件名
  File file = new File(dir, fileName);//创建文件
  mCurrentFilePath = file.getAbsolutePath();
  mMediaRecorder = new MediaRecorder();
  mMediaRecorder.setOutputFile(file.getAbsolutePath());//设置输出文件
  mMediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);//设置麦克风为音频源
  mMediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.AMR_NB);//设置音频格式
  mMediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);//设置音频编码
  mMediaRecorder.prepare();
  mMediaRecorder.start();
  //准备结束
  isPrepared = true;
  if (mListener != null){
  mListener.wellPrepared();
  }
 } catch (IOException e) {
  e.printStackTrace();
 }
 }
 /**
 * 随机生成文件的名称
 * @return
 */
 private String generateFileName() {
 return UUID.randomUUID().toString()+".amr";
 }
 /**
 * 获取音量等级
 */
 public int getVoiceLevel(int maxLevel) {
 if (isPrepared) {
  try {
  //mMediaRecorder.getMaxAmplitude() 范围:1-32767
  return maxLevel * mMediaRecorder.getMaxAmplitude() / 32768 + 1;//最大值 * [0,1）+ 1
  } catch (Exception e) {
  }
 }
 return 1;
 }
 /**
 * 重置
 */
 public void release(){
 if(mMediaRecorder != null){
  mMediaRecorder.stop();
  mMediaRecorder.release();
  mMediaRecorder = null;
 }
 }
 /**
 * 取消
 */
 public void cancel(){
 release();
 //删除产生的文件
 if(mCurrentFilePath != null){
  File file = new File(mCurrentFilePath);
  file.delete();
  mCurrentFilePath = null;
 }
 }
}

import android.annotation.SuppressLint;
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.tiddlerliu.wxrecorder.R;
/**
 * 自定义Button
 */
@SuppressLint("AppCompatCustomView")
public class AudioRecordButton extends Button implements AudioManager.AudioStateListener{
 private static final int STATE_NORMAL = 1;//默认状态
 private static final int STATE_RECORDING = 2;//录音状态
 private static final int STATE_WANT_CANCEL = 3;//想取消状态
 private static final int DISTANCE_Y_CANCEL = 50;//定义上滑取消距离
 private int mCurState = STATE_NORMAL;//记录当前状态
 private boolean isRecording = false;//是否在录音状态
 private DialogManager mDialogManager;
 private AudioManager mAudioManager;
 private float mTime;//记录录音时长
 private boolean mReady;//是否触发OnLongClick事件
 private boolean isComplete = true;//是否已经完成
 public AudioRecordButton(Context context) {
 this(context,null);
 }
 public AudioRecordButton(Context context, AttributeSet attrs) {
 super(context, attrs);
 mDialogManager = new DialogManager(getContext());
 String dir = Environment.getExternalStorageDirectory()+"/TiddlerLiu/recorder/audios";//最好判断SD卡是否存在可读
 mAudioManager = AudioManager.getInstance(dir);
 mAudioManager.setOnAudioStateListener(this);
 setOnLongClickListener(new OnLongClickListener() {
  @Override
  public boolean onLongClick(View v) {
  mReady = true;
  mAudioManager.prepareAudio();
  return false;
  }
 });
 }
 /**
 * 录音完成后的回调
 */
 public interface AudioFinishRecorderListener {
 void onFinish(float seconds,String filePath);
 }
 private AudioFinishRecorderListener mAudioFinishRecorderListener;
 public void setAudioFinishRecorderListener(AudioFinishRecorderListener listener){
 mAudioFinishRecorderListener = listener;
 }
 private static final int MSG_AUDIO_PREPARED = 0x110;
 private static final int MSG_VOICE_CHANGED = 0x111;
 private static final int MSG_DIALOG_DISMISS = 0x112;
 private static final int MSG_AUDIO_COMPLETE = 0x113;//达到最大时长，自动完成
 /**
 * 获取音量大小
 */
 private Runnable mGetVoiceLevelRunnable = new Runnable() {
 @Override
 public void run() {
  while (isRecording){
  try {
   Thread.sleep(100);
   mTime += 0.1f;
   if(mTime >= 60f){//60s自动触发完成录制
   mHandler.sendEmptyMessage(MSG_AUDIO_COMPLETE);
   }
   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:
   //显示应该在audio end prepared以后
   mDialogManager.showRecordingDialog();
   isRecording = true;
   isComplete = false;
   new Thread(mGetVoiceLevelRunnable).start();
   break;
  case MSG_VOICE_CHANGED:
   mDialogManager.updateVoiceLevel(mAudioManager.getVoiceLevel(7));
   break;
  case MSG_DIALOG_DISMISS:
   mDialogManager.dismissDialog();
   break;
  case MSG_AUDIO_COMPLETE:
   complete();
   reset();
   break;
  default:
   break;
  }
 }
 };
 @Override
 public void wellPrepared() {
 mHandler.sendEmptyMessage(MSG_AUDIO_PREPARED);
 }
 @Override
 public boolean onTouchEvent(MotionEvent event) {
 int action = event.getAction();
 int x = (int) event.getX();
 int y = (int) event.getY();
 switch (action){
  case MotionEvent.ACTION_DOWN:
  changeState(STATE_RECORDING);
  break;
  case MotionEvent.ACTION_MOVE:
  if(isRecording){
   //根据(x,y)坐标，判断是否想要取消
   if (wantToCancel(x,y)){
   changeState(STATE_WANT_CANCEL);
   }else{
   changeState(STATE_RECORDING);
   }
  }
  break;
  case MotionEvent.ACTION_UP:
  if(!isComplete){//没有执行超时自动完成逻辑
   if (!mReady) {//还未触发OnLongClick事件
   reset();
   return super.onTouchEvent(event);
   }
   if (!isRecording || mTime < 0.6f) {//还未开始录音 或者 录制时长过短
   mDialogManager.tooShort();
   mAudioManager.cancel();
   mHandler.sendEmptyMessageDelayed(MSG_DIALOG_DISMISS, 1300);//1.3秒后关闭对话框
   } else if (mCurState == STATE_RECORDING) {//正常录制结束
   complete();
   } else if (mCurState == STATE_WANT_CANCEL) {//想要取消状态
   mDialogManager.dismissDialog();
   mAudioManager.cancel();
   }
   reset();
  }
  break;
 }
 return super.onTouchEvent(event);
 }
 /**
 * 正常录制结束
 */
 private void complete() {
 mDialogManager.dismissDialog();
 mAudioManager.release();
 if(mAudioFinishRecorderListener != null && !isComplete){
  mAudioFinishRecorderListener.onFinish(mTime,mAudioManager.getCurrentFilePath());
 }
 }
 /**
 * 恢复状态和标志位
 */
 private void reset() {
 isRecording = false;
 mReady = false;
 mTime = 0;
 isComplete = true;
 changeState(STATE_NORMAL);
 }
 /**
 * 根据(x,y)坐标，判断是否想要取消
 * @param x
 * @param y
 * @return
 */
 private boolean wantToCancel(int x, int y) {
 if(x < 0 || x > getWidth()){//手指移出button范围
  return true;
 }
 if(y < - DISTANCE_Y_CANCEL || y > getHeight() + DISTANCE_Y_CANCEL){//手指移出Y轴设定范围
  return true;
 }
 return false;
 }
 /**
 * 改变状态
 * @param state
 */
 private void changeState(int state) {
 if(mCurState != state){
  mCurState = 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_CANCEL:
   setBackgroundResource(R.drawable.btn_recorder_recording);
   setText(R.string.str_recorder_want_cancel);
   mDialogManager.wantToCancel();
   break;
  default:
   break;
  }
 }
 }
}

import android.content.Context;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
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.tiddlerliu.wxrecorder.R;
import com.tiddlerliu.wxrecorder.model.Recorder;
import java.util.List;
public class RecorderAdapter extends ArrayAdapter<Recorder>{
 private int mMinItemWidth;
 private int mMaxItemWidth;
 private LayoutInflater mInflater;
 public RecorderAdapter(@NonNull Context context, List<Recorder> datas) {
 super(context, -1 ,datas);
 mInflater = LayoutInflater.from(context);
 //获取屏幕参数
 WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
 DisplayMetrics outMetrics = new DisplayMetrics();
 wm.getDefaultDisplay().getMetrics(outMetrics);
 //设置最小宽度和最大宽度
 mMinItemWidth = (int) (outMetrics.widthPixels * 0.16f);
 mMaxItemWidth = (int) (outMetrics.widthPixels * 0.64f);
 }
 @NonNull
 @Override
 public View getView(int position, @Nullable View convertView, @NonNull ViewGroup parent) {
 ViewHolder holder = null;
 if(convertView == null){
  convertView = mInflater.inflate(R.layout.item_recorder,parent,false);
  holder = new ViewHolder();
  holder.seconds = (TextView) convertView.findViewById(R.id.item_recorder_time);
  holder.length = convertView.findViewById(R.id.item_recorder_length);
  convertView.setTag(holder);
 }else {
  holder = (ViewHolder) convertView.getTag();
 }
 //设置时长
 holder.seconds.setText(Math.round(getItem(position).getTime())+ "\"");
 //根据时长按比例设置时长
 ViewGroup.LayoutParams lp = holder.length.getLayoutParams();
 lp.width = (int) (mMinItemWidth + (mMaxItemWidth/60f * getItem(position).getTime()));
 return convertView;
 }
 private class ViewHolder{
 TextView seconds;
 View length;
 }
}

import android.graphics.drawable.AnimationDrawable;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import com.tiddlerliu.wxrecorder.CustomView.AudioRecordButton;
import com.tiddlerliu.wxrecorder.CustomView.MediaManager;
import com.tiddlerliu.wxrecorder.adapter.RecorderAdapter;
import com.tiddlerliu.wxrecorder.model.Recorder;
import java.util.ArrayList;
import java.util.List;
public class MainActivity extends AppCompatActivity {
 private ListView mListView;
 private AudioRecordButton mAudioRecordButton;
 private ArrayAdapter<Recorder> mAdapter ;
 private List<Recorder> mDatas = new ArrayList<>();
 private View mAnimView;
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);
 mListView = (ListView) findViewById(R.id.recorder_list);
 mAudioRecordButton = (AudioRecordButton) findViewById(R.id.recorder_button);
 mAudioRecordButton.setAudioFinishRecorderListener(new AudioRecordButton.AudioFinishRecorderListener() {
  @Override
  public void onFinish(float seconds, String filePath) {
  Recorder recorder = new Recorder(seconds,filePath);
  mDatas.add(recorder);
  mAdapter.notifyDataSetChanged();
  mListView.setSelection(mDatas.size()-1);
  }
 });
 mAdapter = new RecorderAdapter(this,mDatas);
 mListView.setAdapter(mAdapter);
 mListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
  @Override
  public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
  if(mAnimView != null){
   mAnimView.setBackgroundResource(R.mipmap.adj);
   mAnimView = null;
  }
  //播放动画
  mAnimView = view.findViewById(R.id.item_recorder_anim);
  mAnimView.setBackgroundResource(R.drawable.play_ainm);
  AnimationDrawable anim = (AnimationDrawable) mAnimView.getBackground();
  anim.start();
  //播放音频
  MediaManager.playSound(mDatas.get(position).getFilePath(), new MediaPlayer.OnCompletionListener() {
   @Override
   public void onCompletion(MediaPlayer mp) {
   mAnimView.setBackgroundResource(R.mipmap.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();
 }
}