实现类似微信中说话功能的录音处理代码实例

package com.example.testaudio;import java.io.File;import android.app.Activity;import android.media.MediaPlayer;import android.media.MediaPlayer.OnCompletionListener;import android.media.MediaRecorder;import android.os.Bundle;import android.os.Environment;import android.os.Handler;import android.os.Message;import android.util.Log;import android.view.Menu;import android.view.MotionEvent;import android.view.View;import android.view.View.OnClickListener;import android.view.View.OnTouchListener;import android.widget.Button;import android.widget.TextView;public class MainActivity extends Activity {private MediaRecorder recoder = null;private MediaPlayer player = null;private String theMediaPath;TextView tv = null;TextView tvRecord = null;Button testBtn = null;Button testBtn2 = null;Button stopBtn = null;Button playBtn = null;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);tv = (TextView)findViewById(R.id.textView1);tvRecord = (TextView)findViewById(R.id.tvRecord);testBtn = (Button)findViewById(R.id.button1);testBtn2 = (Button)findViewById(R.id.button2);stopBtn = (Button)findViewById(R.id.buttonStop);playBtn = (Button)findViewById(R.id.buttonPlay);testBtn2.setOnTouchListener(new OnTouchListener() {@Overridepublic boolean onTouch(View v, MotionEvent event) {Log.i("testactivity", "setOnTouchListener:"+event.getAction());switch(event.getAction()) {case MotionEvent.ACTION_UP: {Log.i("testactivity", "停止录音");stopRecording();break;}case MotionEvent.ACTION_DOWN: {Log.i("testactivity", "开始录音");startRecording();break;}default: break;}return false;}});testBtn.setOnClickListener(new OnClickListener() {public void onClick(View arg0) {startRecording();testBtn.setEnabled(false);stopBtn.setEnabled(true);}});stopBtn.setEnabled(false);stopBtn.setOnClickListener(new OnClickListener() {public void onClick(View arg0) {stopRecording();testBtn.setEnabled(true);playBtn.setEnabled(true);stopBtn.setEnabled(false);}});playBtn.setOnClickListener(new OnClickListener() {public void onClick(View arg0) {playRecordFile(theMediaPath);stopBtn.setEnabled(true);}});}protected void playRecordFile(String _file) {try {File f = new File(_file);if(!f.exists()) {tv.setText("文件不存在:" + _file);return;}} catch(Exception e) {Log.i("testactivity", e.getMessage());}try {player = new MediaPlayer();player.setDataSource(_file);player.prepare();player.setOnCompletionListener(new OnCompletionListener() {public void onCompletion(MediaPlayer arg0) {tv.setText("播放完毕");stopBtn.setEnabled(false);}});player.start();} catch(Exception e) {Log.e("testactivity", "play failed:" + e.getMessage());}}/*** 停止录音处理*/protected void stopRecording() {if(recoder != null) {Log.i("testactivity", "停止录音");recoder.stop();recoder.release();recoder = null;endtime = System.currentTimeMillis();_handleRecordComplete();}if(player != null) {Log.i("testactivity", "停止播放");player.stop();player.release();player = null;}}/*** 开始录音处理*/protected void startRecording() {theMediaPath = Environment.getExternalStorageDirectory().getAbsolutePath();theMediaPath += "/audiotest.3gp";recoder = new MediaRecorder();recoder.setAudioSource(MediaRecorder.AudioSource.MIC);recoder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);recoder.setOutputFile(theMediaPath);recoder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);starttime = System.currentTimeMillis();updateMicStatus();try {recoder.prepare();recoder.start();_handleRecordStart();} catch (Exception e) {Log.e("testactivity", "prepared failed:" + e.getMessage());_handleRecordStartError(e);}}//定时器private static long maxtime = 30*1000; //30秒private long starttime = 0l;private long endtime = 0l;private final Handler mHandler = new Handler();private Runnable mUpdateMicStatusTimer = new Runnable() {public void run() {//判断是否超时if(starttime > 0 && System.currentTimeMillis() - starttime > maxtime) {Log.e("testactivity", "超时的录音时间，直接停止");stopRecording();return;}//更新分贝状态updateMicStatus();}};/*** 更新话筒状态 分贝是也就是相对响度 分贝的计算公式K=20lg(Vo/Vi) Vo当前振幅值 Vi基准值为600：我是怎么制定基准值的呢？ 当20* * Math.log10(mMediaRecorder.getMaxAmplitude() / Vi)==0的时候vi就是我所需要的基准值* 当我不对着麦克风说任何话的时候，测试获得的mMediaRecorder.getMaxAmplitude()值即为基准值。* Log.i("mic_", "麦克风的基准值：" + mMediaRecorder.getMaxAmplitude());前提时不对麦克风说任何话*/private int BASE = 600;private int SPACE = 300;// 间隔取样时间private void updateMicStatus() {if (recoder != null) {// int vuSize = 10 * mMediaRecorder.getMaxAmplitude() / 32768;int ratio = recoder.getMaxAmplitude() / BASE;int db = 0;// 分贝if (ratio > 1)db = (int) (20 * Math.log10(ratio));_handleRecordVoice(db);mHandler.postDelayed(mUpdateMicStatusTimer, SPACE);/** if (db > 1) { vuSize = (int) (20 * Math.log10(db)); Log.i("mic_",* "麦克风的音量的大小：" + vuSize); } else Log.i("mic_", "麦克风的音量的大小：" + 0);*/}}private void _handleRecordStart() {//开始录音的接收函数tv.setText("开始录音...");//starttime 开始时间}private void _handleRecordStartError(Exception e) {//开始录音的接收函数失败tv.setText("开始录音失败:" + e.getMessage());}private void _handleRecordComplete() {//结束录音tv.setText("停止录音:" + theMediaPath);}private void _handleRecordVoice(int _db) {//声音事件侦听，转换成分贝tvRecord.setText(""+_db);}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.main, menu);return true;}}以上就是实现类似微信中说话功能的录音处理代码实例的详细内容，更多请关注小潘博客其它相关文章！