類似微信說話功能的錄音處理代碼分享

更新時(shí)間：2014年01月19日 14:19:42 作者：

這篇文章主要介紹了類似微信中說話功能的錄音處理代碼，需要大家自己加UI界面,大家參考使用吧

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;

@Override
protected 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() {
   @Override
   public boolean onTouch(View v, MotionEvent event) {
    Log.i("testactivity", "setOnTouchListener:"+event.getAction());
    switch(event.getAction()) {
     case MotionEvent.ACTION_UP: {
      Log.i("testactivity", "停止錄音");
      stopRecording();
      break;
     }
     case MotionEvent.ACTION_DOWN: {
      Log.i("testactivity", "開始錄音");
      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("播放完畢");
     stopBtn.setEnabled(false);
    }
   });

   player.start();
  } catch(Exception e) {
   Log.e("testactivity", "play failed:" + e.getMessage());
  }
}

/**
* 停止錄音處理
*/
protected void stopRecording() {

  if(recoder != null) {
   Log.i("testactivity", "停止錄音");
   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;
  }
}

/**
* 開始錄音處理
*/
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);
  }

}

//定時(shí)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() {
        //判斷是否超時(shí)
        if(starttime > 0 && System.currentTimeMillis() - starttime > maxtime) {
          Log.e("testactivity", "超時(shí)的錄音時(shí)間，直接停止");
          stopRecording();
          return;
        }

        //更新分貝狀態(tài)
            updateMicStatus();
        }
    };

    /**
     * 更新話筒狀態(tài) 分貝是也就是相對響度分貝的計(jì)算公式K=20lg(Vo/Vi) Vo當(dāng)前振幅值 Vi基準(zhǔn)值為600：我是怎么制定基準(zhǔn)值的呢？當(dāng)20
     * * Math.log10(mMediaRecorder.getMaxAmplitude() / Vi)==0的時(shí)候vi就是我所需要的基準(zhǔn)值
     * 當(dāng)我不對著麥克風(fēng)說任何話的時(shí)候，測試獲得的mMediaRecorder.getMaxAmplitude()值即為基準(zhǔn)值。
     * Log.i("mic_", "麥克風(fēng)的基準(zhǔn)值：" + mMediaRecorder.getMaxAmplitude());前提時(shí)不對麥克風(fēng)說任何話
     */
    private int BASE = 600;
    private int SPACE = 300;// 間隔取樣時(shí)間

    private void updateMicStatus() {
        if (recoder != null) {
            // int vuSize = 10 * mMediaRecorder.getMaxAmplitude() / 32768;
            int ratio = recoder.getMaxAmplitude() / BASE;
            int db = 0;// 分貝
            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_",
             * "麥克風(fēng)的音量的大?。? + vuSize); } else Log.i("mic_", "麥克風(fēng)的音量的大?。? + 0);
             */
        }
    }

private void _handleRecordStart() {
  //開始錄音的接收函數(shù)
  tv.setText("開始錄音...");
  //starttime 開始時(shí)間
}

private void _handleRecordStartError(Exception e) {
  //開始錄音的接收函數(shù)失敗
  tv.setText("開始錄音失敗:" + e.getMessage());
}

private void _handleRecordComplete() {
  //結(jié)束錄音
  tv.setText("停止錄音:" + theMediaPath);
}

private void _handleRecordVoice(int _db) {
  //聲音事件偵聽，轉(zhuǎn)換成分貝
  tvRecord.setText(""+_db);
}

@Override
public 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;
}