音频的两种录制方式-AudioRecord,MediaRecorder的使用及播放
AudioRecord和MediaRecorder两种都可以录制音频，MediaRecorder已实现大量的封装，操作起来更加简单，而AudioRecord使用起来更加灵活，能实现更多的功能。
1.AudioRecord(基于字节流录音)
优点：可以实现语音的实时处理，进行边录边播，对音频的实时处理。
缺点：输出的是PCM的语音数据，如果保存成音频文件是不能被播放器播放的。要用到AudioTrack这个去进行处理。
2.MediaRecorder(基于文件录音)
已集成了录音，编码，压缩等，支持少量的音频格式文件。
优点：封装度很高，操作简单
缺点：无法实现实时处理音频，输出的音频格式少。
功能实现：MediaRecorder（这里需要注意，无论录制还是播放都是一个耗时操作，需要在非主线程中去操作）
//实现触摸录音，松开录音结束
tv_press_send.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
startRecorder();
break;
case MotionEvent.ACTION_UP:
stopRecorder();
break;
case MotionEvent.ACTION_CANCEL:
break;
default:
break;
}
return true;
}
});开启一个单线程去实现录音功能，及失败操作：
/**
* 开启录音
*/
private void startRecorder() {
tv_press_send.setText("正在说话...");
//提交后台任务，开始录音
mExecutorService.submit(new Runnable() {
@Override
public void run() {
//释放上一次的录音
releaseRecorder();
//开始录音
if (!doStart()) {
recorderFial();
}
}
});
}
启动录音，及MediaRecorder的配置：
/**
* 启动录音
*
* @return
*/
private boolean doStart() {
try {
//创建MediaRecorder
mMediaRecorder = new MediaRecorder();
//创建录音文件
mRecorderFile = new File(Environment.getExternalStorageDirectory().getAbsolutePath()
+ "/recorderdemo/" + System.currentTimeMillis() + ".m4a");
if (!mRecorderFile.getParentFile().exists()) mRecorderFile.getParentFile().mkdirs();
mRecorderFile.createNewFile();
//配置MediaRecorder
//从麦克风采集
mMediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
//保存文件为MP4格式
mMediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
//所有android系统都支持的适中采样的频率
mMediaRecorder.setAudioSamplingRate(44100);
//通用的AAC编码格式
mMediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AAC);
//设置音质频率
mMediaRecorder.setAudioEncodingBitRate(96000);
//设置文件录音的位置
mMediaRecorder.setOutputFile(mRecorderFile.getAbsolutePath());
//开始录音
mMediaRecorder.prepare();
mMediaRecorder.start();
startRecorderTime = System.currentTimeMillis();
} catch (Exception e) {
Toast.makeText(FileActivity.this, "录音失败，请重试", Toast.LENGTH_SHORT).show();
return false;
}
//记录开始录音时间，用于统计时长，小于3秒中，录音不发送
return true;
}
停止录音操作：
/**
* 关闭录音
*
* @return
*/
private boolean doStop() {
try {
mMediaRecorder.stop();
stopRecorderTime = System.currentTimeMillis();
final int second = (int) (stopRecorderTime - startRecorderTime) / 1000;
//按住时间小于3秒钟，算作录取失败，不进行发送
if (second < 3) return false;
mHander.post(new Runnable() {
@Override
public void run() {
tv_sendmsg.setText("录制成功：" + second + "秒");
}
});
} catch (Exception e) {
e.printStackTrace();
}
return true;
}
释放MediaRecorder：
/**
* 释放上一次的录音
*/
private void releaseRecorder() {
if (mMediaRecorder != null) {
mMediaRecorder.release();
mMediaRecorder = null;
}
}录音的播放：使用MediaPlayer
开启一个单线程，去播放：
/**
* 播放录音
*
* @param view
*/
public void playrecorder(View view) {
if (!mIsPlaying) {
mExecutorService.submit(new Runnable() {
@Override
public void run() {
doPlay(mRecorderFile);
}
});
} else {
Toast.makeText(FileActivity.this, "正在播放", Toast.LENGTH_SHORT).show();
}
}具体播放代码：
private void doPlay(File audioFile) {
try {
//配置播放器 MediaPlayer
mediaPlayer = new MediaPlayer();
//设置声音文件
mediaPlayer.setDataSource(audioFile.getAbsolutePath());
//配置音量,中等音量
mediaPlayer.setVolume(1,1);
//播放是否循环
mediaPlayer.setLooping(false);
//设置监听回调 播放完毕
mediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
@Override
public void onCompletion(MediaPlayer mp) {
stopPlayer();
}
});
mediaPlayer.setOnErrorListener(new MediaPlayer.OnErrorListener() {
@Override
public boolean onError(MediaPlayer mp, int what, int extra) {
stopPlayer();
Toast.makeText(FileActivity.this,"播放失败",Toast.LENGTH_SHORT).show();
return true;
}
});
//设置播放
mediaPlayer.prepare();
mediaPlayer.start();
//异常处理，防止闪退
} catch (Exception e) {
e.printStackTrace();
stopPlayer();
}
}activity销毁后的onDestory的处理：
@Override
protected void onDestroy() {
super.onDestroy();
//当activity关闭时，停止这个线程，防止内存泄漏
mExecutorService.shutdownNow();
releaseRecorder();
}MediaRecord完整功能实现代码：
package com.example.amelon.myapplication;
import android.media.MediaPlayer;
import android.media.MediaRecorder;
import android.os.Environment;
import android.os.Handler;
import android.os.Looper;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.MotionEvent;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;
import java.io.File;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
public class FileActivity extends AppCompatActivity {
private TextView tv_sendmsg, tv_press_send;
private ExecutorService mExecutorService;
private MediaRecorder mMediaRecorder;
private MediaPlayer mediaPlayer;
private File mRecorderFile;
private long startRecorderTime, stopRecorderTime;
private Handler mHander = new Handler(Looper.getMainLooper());
private boolean mIsPlaying = false;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_first);
setTitle("文件录音");
initView();
//录音JNI函数不具有线程安全性，因此用单线程
mExecutorService = Executors.newSingleThreadExecutor();
}
private void initView() {
tv_sendmsg = (TextView) findViewById(R.id.tv_sendmsg);
tv_press_send = (TextView) findViewById(R.id.tv_press_send);
tv_press_send.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
startRecorder();
break;
case MotionEvent.ACTION_UP:
stopRecorder();
break;
case MotionEvent.ACTION_CANCEL:
break;
default:
break;
}
return true;
}
});
}
/**
* 开启录音
*/
private void startRecorder() {
tv_press_send.setText("正在说话...");
//提交后台任务，开始录音
mExecutorService.submit(new Runnable() {
@Override
public void run() {
//释放上一次的录音
releaseRecorder();
//开始录音
if (!doStart()) {
recorderFial();
}
}
});
}
/**
* 释放上一次的录音
*/
private void releaseRecorder() {
if (mMediaRecorder != null) {
mMediaRecorder.release();
mMediaRecorder = null;
}
}
/**
* 启动录音
*
* @return
*/
private boolean doStart() {
try {
//创建MediaRecorder
mMediaRecorder = new MediaRecorder();
//创建录音文件
mRecorderFile = new File(Environment.getExternalStorageDirectory().getAbsolutePath()
+ "/recorderdemo/" + System.currentTimeMillis() + ".m4a");
if (!mRecorderFile.getParentFile().exists()) mRecorderFile.getParentFile().mkdirs();
mRecorderFile.createNewFile();
//配置MediaRecorder
//从麦克风采集
mMediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
//保存文件为MP4格式
mMediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
//所有android系统都支持的适中采样的频率
mMediaRecorder.setAudioSamplingRate(44100);
//通用的AAC编码格式
mMediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AAC);
//设置音质频率
mMediaRecorder.setAudioEncodingBitRate(96000);
//设置文件录音的位置
mMediaRecorder.setOutputFile(mRecorderFile.getAbsolutePath());
//开始录音
mMediaRecorder.prepare();
mMediaRecorder.start();
startRecorderTime = System.currentTimeMillis();
} catch (Exception e) {
Toast.makeText(FileActivity.this, "录音失败，请重试", Toast.LENGTH_SHORT).show();
return false;
}
//记录开始录音时间，用于统计时长，小于3秒中，录音不发送
return true;
}
/**
* 关闭录音
*
* @return
*/
private boolean doStop() {
try {
mMediaRecorder.stop();
stopRecorderTime = System.currentTimeMillis();
final int second = (int) (stopRecorderTime - startRecorderTime) / 1000;
//按住时间小于3秒钟，算作录取失败，不进行发送
if (second < 3) return false;
mHander.post(new Runnable() {
@Override
public void run() {
tv_sendmsg.setText("录制成功：" + second + "秒");
}
});
} catch (Exception e) {
e.printStackTrace();
}
return true;
}
/**
* 录音失败逻辑
*/
private void recorderFial() {
mRecorderFile = null;
mHander.post(new Runnable() {
@Override
public void run() {
tv_press_send.setText("录音失败请重新录音");
}
});
}
/**
* 停止录音
*/
private void stopRecorder() {
tv_press_send.setText("开始录音");
//提交后台任务，停止录音
mExecutorService.submit(new Runnable() {
@Override
public void run() {
if (!doStop()) {
recorderFial();
}
releaseRecorder();
}
});
}
/**
* 播放录音
*
* @param view
*/
public void playrecorder(View view) {
if (!mIsPlaying) {
mExecutorService.submit(new Runnable() {
@Override
public void run() {
doPlay(mRecorderFile);
}
});
} else {
Toast.makeText(FileActivity.this, "正在播放", Toast.LENGTH_SHORT).show();
}
}
private void doPlay(File audioFile) {
try {
//配置播放器 MediaPlayer
mediaPlayer = new MediaPlayer();
//设置声音文件
mediaPlayer.setDataSource(audioFile.getAbsolutePath());
//配置音量,中等音量
mediaPlayer.setVolume(1,1);
//播放是否循环
mediaPlayer.setLooping(false);
//设置监听回调 播放完毕
mediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
@Override
public void onCompletion(MediaPlayer mp) {
stopPlayer();
}
});
mediaPlayer.setOnErrorListener(new MediaPlayer.OnErrorListener() {
@Override
public boolean onError(MediaPlayer mp, int what, int extra) {
stopPlayer();
Toast.makeText(FileActivity.this,"播放失败",Toast.LENGTH_SHORT).show();
return true;
}
});
//设置播放
mediaPlayer.prepare();
mediaPlayer.start();
//异常处理，防止闪退
} catch (Exception e) {
e.printStackTrace();
stopPlayer();
}
}
private void stopPlayer(){
mIsPlaying=false;
mediaPlayer.release();
mediaPlayer=null;
}
@Override
protected void onDestroy() {
super.onDestroy();
//当activity关闭时，停止这个线程，防止内存泄漏
mExecutorService.shutdownNow();
releaseRecorder();
}
}
xml布局文件：
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_first"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:padding="2dp"
tools:context="com.example.amelon.myapplication.FileActivity">
<Button
android:onClick="playrecorder"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="播放"
android:paddingLeft="3dp"
android:paddingRight="3dp"
/>
<TextView
android:id="@+id/tv_sendmsg"
android:layout_weight="8"
android:layout_width="wrap_content"
android:layout_height="0dp"
android:layout_marginTop="30dp"
android:onClick="filerecord"
android:text="文件录音:" />
<TextView
android:id="@+id/tv_press_send"
android:layout_width="match_parent"
android:layout_weight="1"
android:background="@android:color/darker_gray"
android:gravity="center"
android:layout_height="0dp"
android:textSize="24sp"
android:textColor="#70ffffff"
android:paddingLeft="10dp"
android:paddingRight="10dp"
android:text="按下说话" />
LinearLayout>
AudioRecord的功能实现：
实现一个点击button进行录音，再次点击停止录音功能
开启录音和停止录音：
public void recorderaudio(View view) {
if (mIsRecording) {
bt_stream_recorder.setText("开始录音");
//在开始录音中如果这个值没有变false，则一直进行，当再次点击变false时，录音才停止
mIsRecording = false;
//执行停止录音逻辑，这块不用下面代码，只需上面变换mIsRecording这个状态就可以了，下面一直走while
/* mExecutorService.submit(new Runnable() {
@Override
public void run() {
stopRecorder();
}
});*/
} else {
bt_stream_recorder.setText("停止录音");
//提交后台任务，执行录音逻辑
mIsRecording = true;
//提交后台任务，执行录音逻辑
mExecutorService.submit(new Runnable() {
@Override
public void run() {
startRecorder();
}
});
}
}
开启录音：
/**
* 开始录音
*/
private void startRecorder() {
// realeseRecorder();
if (!dostart()) recorderFail();
}AudioRecord的配置及功能实现具体代码：
private boolean dostart() {
try {
//记录开始录音时间
startRecorderTime = System.currentTimeMillis();
//创建录音文件
mAudioRecordFile = new File(Environment.getExternalStorageDirectory().getAbsolutePath() +
"/recorderdemo/" + System.currentTimeMillis() + ".pcm");
if (!mAudioRecordFile.getParentFile().exists())
mAudioRecordFile.getParentFile().mkdirs();
mAudioRecordFile.createNewFile();
//创建文件输出流
mFileOutputStream = new FileOutputStream(mAudioRecordFile);
//配置AudioRecord
int audioSource = MediaRecorder.AudioSource.MIC;
//所有android系统都支持
int sampleRate = 44100;
//单声道输入
int channelConfig = AudioFormat.CHANNEL_IN_MONO;
//PCM_16是所有android系统都支持的
int autioFormat = AudioFormat.ENCODING_PCM_16BIT;
//计算AudioRecord内部buffer最小
int minBufferSize = AudioRecord.getMinBufferSize(sampleRate, channelConfig, autioFormat);
//buffer不能小于最低要求，也不能小于我们每次我们读取的大小。
mAudioRecord = new AudioRecord(audioSource, sampleRate, channelConfig, autioFormat, Math.max(minBufferSize, BUFFER_SIZE));
//开始录音
mAudioRecord.startRecording();
//循环读取数据，写入输出流中
while (mIsRecording) {
//只要还在录音就一直读取
int read = mAudioRecord.read(mBuffer, 0, BUFFER_SIZE);
if(read<=0){
return false;
}else {
mFileOutputStream.write(mBuffer, 0, read);
}
}
//退出循环，停止录音，释放资源
stopRecorder();
} catch (Exception e) {
e.printStackTrace();
return false;
} finally {
if (mAudioRecord != null) {
mAudioRecord.release();
}
}
return true;
}再次点击停止录音操作代码：
private boolean doStop() {
//停止录音，关闭文件输出流
mAudioRecord.stop();
mAudioRecord.release();
mAudioRecord = null;
//记录结束时间，统计录音时长
stopRecorderTime = System.currentTimeMillis();
//大于3秒算成功，在主线程更新UI
final int send = (int) (stopRecorderTime - startRecorderTime) / 1000;
if (send > 3) {
mHandler.post(new Runnable() {
@Override
public void run() {
tv_stream_msg.setText("录音成功：" + send + "秒");
bt_stream_recorder.setText("开始录音");
}
});
} else {
recorderFail();
return false;
}
return true;
}录取失败，更新UI操作：
private boolean recorderFail() {
mHandler.post(new Runnable() {
@Override
public void run() {
bt_stream_recorder.setText("开始录音");
tv_stream_msg.setText("录取失败，请重新录入");
mIsRecording=false;
Log.i("Tag8", "go here111111111");
}
});
return false;
}播放录音代码：
/**
* 播放声音
* @param view
*/
public void player(View view){
mExecutorService.submit(new Runnable() {
@Override
public void run() {
if(!mIsPlaying){
Log.i("Tag8","go here");
mIsPlaying=true;
doPlay(mAudioRecordFile);
}
}
});
}播放录音具体实现，AudioTrack的使用：
private void doPlay(File audioFile) {
if(audioFile !=null){
Log.i("Tag8","go there");
//配置播放器
//音乐类型，扬声器播放
int streamType= AudioManager.STREAM_MUSIC;
//录音时采用的采样频率，所以播放时同样的采样频率
int sampleRate=44100;
//单声道，和录音时设置的一样
int channelConfig=AudioFormat.CHANNEL_OUT_MONO;
//录音时使用16bit，所以播放时同样采用该方式
int audioFormat=AudioFormat.ENCODING_PCM_16BIT;
//流模式
int mode= AudioTrack.MODE_STREAM;
//计算最小buffer大小
int minBufferSize=AudioTrack.getMinBufferSize(sampleRate,channelConfig,audioFormat);
//构造AudioTrack 不能小于AudioTrack的最低要求，也不能小于我们每次读的大小
AudioTrack audioTrack=new AudioTrack(streamType,sampleRate,channelConfig,audioFormat,
Math.max(minBufferSize,BUFFER_SIZE),mode);
//从文件流读数据
FileInputStream inputStream=null;
try{
//循环读数据，写到播放器去播放
inputStream=new FileInputStream(audioFile);
//循环读数据，写到播放器去播放
int read;
//只要没读完，循环播放
while ((read=inputStream.read(mBuffer))>0){
Log.i("Tag8","read:"+read);
int ret=audioTrack.write(mBuffer,0,read);
//检查write的返回值，处理错误
switch (ret){
case AudioTrack.ERROR_INVALID_OPERATION:
case AudioTrack.ERROR_BAD_VALUE:
case AudioManager.ERROR_DEAD_OBJECT:
playFail();
return;
default:
break;
}
}
}catch (Exception e){
e.printStackTrace();
//读取失败
playFail();
}finally {
mIsPlaying=false;
//关闭文件输入流
if(inputStream !=null){
closeStream(inputStream);
}
//播放器释放
resetQuietly(audioTrack);
}
}
}播放失败：更新UI操作
/**
* 播放失败
*/
private void playFail() {
mHandler.post(new Runnable() {
@Override
public void run() {
tv_stream_msg.setText("播放失败");
}
});
}activity销毁处理代码：
//防止内存泄漏
@Override
protected void onDestroy() {
super.onDestroy();
if (mExecutorService != null) {
mExecutorService.shutdownNow();
}
if (mAudioRecord != null) {
mAudioRecord.stop();
mAudioRecord.release();
mAudioRecord = null;
}
}AudioRecord的功能实现完整代码：
package com.example.amelon.myapplication;
import android.media.AudioFormat;
import android.media.AudioManager;
import android.media.AudioRecord;
import android.media.AudioTrack;
import android.media.MediaRecorder;
import android.os.Environment;
import android.os.Handler;
import android.os.Looper;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
public class StreamActivity extends AppCompatActivity {
private Button bt_stream_recorder;
private TextView tv_stream_msg;
private ExecutorService mExecutorService;
private long startRecorderTime, stopRecorderTime;
private volatile boolean mIsRecording = false;
private AudioRecord mAudioRecord;
private FileOutputStream mFileOutputStream;
private File mAudioRecordFile;
private byte[] mBuffer;
//buffer值不能太大，避免OOM
private static final int BUFFER_SIZE = 2048;
private boolean mIsPlaying=false;
private Handler mHandler = new Handler(Looper.getMainLooper());
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_stream);
setTitle("字节流录音");
initView();
mExecutorService = Executors.newSingleThreadExecutor();
mBuffer = new byte[BUFFER_SIZE];
}
private void initView() {
bt_stream_recorder = (Button) findViewById(R.id.bt_stream_recorder);
tv_stream_msg = (TextView) findViewById(R.id.tv_stream_msg);
}
public void recorderaudio(View view) {
if (mIsRecording) {
bt_stream_recorder.setText("开始录音");
//在开始录音中如果这个值没有变false，则一直进行，当再次点击变false时，录音才停止
mIsRecording = false;
//执行停止录音逻辑，这块不用下面代码，只需上面变换mIsRecording这个状态就可以了，下面一直走while
/* mExecutorService.submit(new Runnable() {
@Override
public void run() {
stopRecorder();
}
});*/
} else {
bt_stream_recorder.setText("停止录音");
//提交后台任务，执行录音逻辑
mIsRecording = true;
//提交后台任务，执行录音逻辑
mExecutorService.submit(new Runnable() {
@Override
public void run() {
startRecorder();
}
});
}
}
/**
* 开始录音
*/
private void startRecorder() {
// realeseRecorder();
if (!dostart()) recorderFail();
}
/**
* 停止录音
*/
private void stopRecorder() {
mIsRecording=false;
if (!doStop()) recorderFail();
}
private boolean dostart() {
try {
//记录开始录音时间
startRecorderTime = System.currentTimeMillis();
//创建录音文件
mAudioRecordFile = new File(Environment.getExternalStorageDirectory().getAbsolutePath() +
"/recorderdemo/" + System.currentTimeMillis() + ".pcm");
if (!mAudioRecordFile.getParentFile().exists())
mAudioRecordFile.getParentFile().mkdirs();
mAudioRecordFile.createNewFile();
//创建文件输出流
mFileOutputStream = new FileOutputStream(mAudioRecordFile);
//配置AudioRecord
int audioSource = MediaRecorder.AudioSource.MIC;
//所有android系统都支持
int sampleRate = 44100;
//单声道输入
int channelConfig = AudioFormat.CHANNEL_IN_MONO;
//PCM_16是所有android系统都支持的
int autioFormat = AudioFormat.ENCODING_PCM_16BIT;
//计算AudioRecord内部buffer最小
int minBufferSize = AudioRecord.getMinBufferSize(sampleRate, channelConfig, autioFormat);
//buffer不能小于最低要求，也不能小于我们每次我们读取的大小。
mAudioRecord = new AudioRecord(audioSource, sampleRate, channelConfig, autioFormat, Math.max(minBufferSize, BUFFER_SIZE));
//开始录音
mAudioRecord.startRecording();
//循环读取数据，写入输出流中
while (mIsRecording) {
//只要还在录音就一直读取
int read = mAudioRecord.read(mBuffer, 0, BUFFER_SIZE);
if(read<=0){
return false;
}else {
mFileOutputStream.write(mBuffer, 0, read);
}
}
//退出循环，停止录音，释放资源
stopRecorder();
} catch (Exception e) {
e.printStackTrace();
return false;
} finally {
if (mAudioRecord != null) {
mAudioRecord.release();
}
}
return true;
}
private boolean recorderFail() {
mHandler.post(new Runnable() {
@Override
public void run() {
bt_stream_recorder.setText("开始录音");
tv_stream_msg.setText("录取失败，请重新录入");
mIsRecording=false;
Log.i("Tag8", "go here111111111");
}
});
return false;
}
private void realeseRecorder() {
mAudioRecord.release();
}
private boolean doStop() {
//停止录音，关闭文件输出流
mAudioRecord.stop();
mAudioRecord.release();
mAudioRecord = null;
Log.i("Tag8", "go here");
//记录结束时间，统计录音时长
stopRecorderTime = System.currentTimeMillis();
//大于3秒算成功，在主线程更新UI
final int send = (int) (stopRecorderTime - startRecorderTime) / 1000;
if (send > 3) {
mHandler.post(new Runnable() {
@Override
public void run() {
tv_stream_msg.setText("录音成功：" + send + "秒");
bt_stream_recorder.setText("开始录音");
Log.i("Tag8", "go there");
}
});
} else {
recorderFail();
return false;
}
return true;
}
/**
* 播放声音
* @param view
*/
public void player(View view){
mExecutorService.submit(new Runnable() {
@Override
public void run() {
if(!mIsPlaying){
Log.i("Tag8","go here");
mIsPlaying=true;
doPlay(mAudioRecordFile);
}
}
});
}
private void doPlay(File audioFile) {
if(audioFile !=null){
Log.i("Tag8","go there");
//配置播放器
//音乐类型，扬声器播放
int streamType= AudioManager.STREAM_MUSIC;
//录音时采用的采样频率，所以播放时同样的采样频率
int sampleRate=44100;
//单声道，和录音时设置的一样
int channelConfig=AudioFormat.CHANNEL_OUT_MONO;
//录音时使用16bit，所以播放时同样采用该方式
int audioFormat=AudioFormat.ENCODING_PCM_16BIT;
//流模式
int mode= AudioTrack.MODE_STREAM;
//计算最小buffer大小
int minBufferSize=AudioTrack.getMinBufferSize(sampleRate,channelConfig,audioFormat);
//构造AudioTrack 不能小于AudioTrack的最低要求，也不能小于我们每次读的大小
AudioTrack audioTrack=new AudioTrack(streamType,sampleRate,channelConfig,audioFormat,
Math.max(minBufferSize,BUFFER_SIZE),mode);
//从文件流读数据
FileInputStream inputStream=null;
try{
//循环读数据，写到播放器去播放
inputStream=new FileInputStream(audioFile);
//循环读数据，写到播放器去播放
int read;
//只要没读完，循环播放
while ((read=inputStream.read(mBuffer))>0){
Log.i("Tag8","read:"+read);
int ret=audioTrack.write(mBuffer,0,read);
//检查write的返回值，处理错误
switch (ret){
case AudioTrack.ERROR_INVALID_OPERATION:
case AudioTrack.ERROR_BAD_VALUE:
case AudioManager.ERROR_DEAD_OBJECT:
playFail();
return;
default:
break;
}
}
}catch (Exception e){
e.printStackTrace();
//读取失败
playFail();
}finally {
mIsPlaying=false;
//关闭文件输入流
if(inputStream !=null){
closeStream(inputStream);
}
//播放器释放
resetQuietly(audioTrack);
}
//循环读数据，写到播放器去播放
//错误处理，防止闪退
}
}
/**
* 关闭输入流
* @param inputStream
*/
private void closeStream(FileInputStream inputStream){
try {
inputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
private void resetQuietly(AudioTrack audioTrack){
try{
audioTrack.stop();
audioTrack.release();
}catch (Exception e){
e.printStackTrace();
}
}
/**
* 播放失败
*/
private void playFail() {
mHandler.post(new Runnable() {
@Override
public void run() {
tv_stream_msg.setText("播放失败");
}
});
}
@Override
protected void onDestroy() {
super.onDestroy();
if (mExecutorService != null) {
mExecutorService.shutdownNow();
}
if (mAudioRecord != null) {
mAudioRecord.stop();
mAudioRecord.release();
mAudioRecord = null;
}
}
}
xml布局文件：
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_stream"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="2dp"
android:orientation="vertical"
tools:context="com.example.amelon.myapplication.StreamActivity">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="3"
android:orientation="vertical"
>
<Button
android:onClick="recorderaudio"
android:id="@+id/bt_stream_recorder"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#50000000"
android:layout_margin="10dp"
android:textSize="24sp"
android:textColor="#fff"
android:padding="10dp"
android:text="开始录音"
/>
<Button
android:onClick="player"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#50000000"
android:layout_margin="10dp"
android:textSize="24sp"
android:textColor="#fff"
android:padding="10dp"
android:text="播 放"
/>
LinearLayout>
<TextView
android:id="@+id/tv_stream_msg"
android:layout_weight="7"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textSize="24sp"
android:padding="10dp"
android:text="录音结果"
/>
LinearLayout>
就整理到这里了，对了慕课网有这块对应视频课程，用到的童鞋们可以去看，一起进步，使用时最好用真机去测，demo稍后上传，有问题就拍砖，多多指教。
转载请标明：http://blog.csdn.net/zxyudia/article/details/68948751