Android 记录的（MediaRecorder）而播放（MediaPlayer）

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

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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;
	}

}

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