经MediaRecorder和MediaPlayer实现声音记录和回放，代码比较简单，直接附着到代码。

xml文档面对只有四个button不贴。

UI

watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQveWFuZ3lzbmcwNw==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/SouthEast" alt="" align="middle" width="400" height="800">

代码：

VoiceActivity.class

package com.zy.ione;

import com.zy.media.UPlayer;

import com.zy.media.URecorder;

import android.app.Activity;

import android.os.Bundle;

import android.os.Environment;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Toast;

public class VoiceActivity extends Activity {

	private String path = null;

	private URecorder recorder;

	private UPlayer player;

	@Override

	protected void onCreate(Bundle savedInstanceState) {

		super.onCreate(savedInstanceState);

		this.setContentView(R.layout.activity_voice);

		path = Environment.getExternalStorageDirectory().getAbsolutePath();

		path += "/ione.pcm";  

		recorder = new URecorder(path);

		player = new UPlayer(path);

		//開始录音

		findViewById(R.id.ione_record_start_btn).setOnClickListener(new OnClickListener() {

			@Override

			public void onClick(View arg0) {	

				Toast.makeText(VoiceActivity.this, "start record", Toast.LENGTH_SHORT).show();

				recorder.start();

			}

		});

		//停止录音

        findViewById(R.id.ione_record_stop_btn).setOnClickListener(new OnClickListener() {

			@Override

			public void onClick(View arg0) {

				Toast.makeText(VoiceActivity.this, "stop record", Toast.LENGTH_SHORT).show();

				recorder.stop();

			}

		});

       //開始播放

      	findViewById(R.id.ione_play_start_btn).setOnClickListener(new OnClickListener() {

      		@Override

      		public void onClick(View arg0) {	

      			Toast.makeText(VoiceActivity.this, "start play", Toast.LENGTH_SHORT).show();

      			player.start();

      		}

      	});

      	//停止播放

         findViewById(R.id.ione_play_stop_btn).setOnClickListener(new OnClickListener() {

      		@Override

      		public void onClick(View arg0) {

      			Toast.makeText(VoiceActivity.this, "stop play", Toast.LENGTH_SHORT).show();

      			player.stop();

      		}

      	});

	}

}

操作接口

package com.zy.media;

public interface IVoiceManager {

	public boolean start();

	public boolean stop();

}

录音

package com.zy.media;

import java.io.IOException;

import android.media.MediaRecorder;

import android.util.Log;

public class URecorder implements IVoiceManager{

	private final String TAG = URecorder.class.getName();

	private String path;

	private MediaRecorder mRecorder;

	public URecorder(String path){

		this.path = path;

		mRecorder = new MediaRecorder();

	}

	/*

	 * 開始录音

	 * @return boolean

	 */

	@Override

	public boolean start() {

		//设置音源为Micphone

        mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);

        //设置封装格式

        mRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);

        mRecorder.setOutputFile(path);

        //设置编码格式

        mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);  

        try {

            mRecorder.prepare();

        } catch (IOException e) {

            Log.e(TAG, "prepare() failed");

        }

        //录音

        mRecorder.start();

		return false;

	}

	/*

	 * 停止录音

	 * @return boolean

	 */

	@Override

	public boolean stop() {

		mRecorder.stop();

        mRecorder.release();

        mRecorder = null;

		return false;

	}

}

播放

package com.zy.media;

import android.media.MediaPlayer;

import android.util.Log;

public class UPlayer implements IVoiceManager {

    private final String TAG = UPlayer.class.getName();

	private String path;

	private MediaPlayer mPlayer;

	public UPlayer(String path){

		this.path = path;

		mPlayer = new MediaPlayer();

	}

	@Override

	public boolean start() {

        try {

			 //设置要播放的文件

			 mPlayer.setDataSource(path);

			 mPlayer.prepare();

			 //播放

			 mPlayer.start();

		 }catch(Exception e){

			 Log.e(TAG, "prepare() failed");

		 }

		return false;

	}

	@Override

	public boolean stop() {

		mPlayer.stop();

		mPlayer.release();

		mPlayer = null;

		return false;

	}

}