Android编程实现录音及保存播放功能的方法【附demo源码下载】

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:tools="http://schemas.android.com/tools"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  tools:context="com.example.kk.soundrecording.MainActivity" >
  <Button
    android:id="@+id/start"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerHorizontal="true"
    android:layout_marginTop="40dp"
    android:text="@string/start" />
  <Button
    android:id="@+id/stop"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/start"
    android:layout_centerHorizontal="true"
    android:layout_marginTop="40dp"
    android:text="@string/stop" />
  <Button
    android:id="@+id/paly"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/stop"
    android:layout_centerHorizontal="true"
    android:layout_marginTop="40dp"
    android:text="@string/paly" />
  <Button
    android:id="@+id/pause_paly"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/paly"
    android:layout_centerHorizontal="true"
    android:layout_marginTop="40dp"
    android:text="@string/pause_paly" />
  <Button
    android:id="@+id/stop_paly"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/pause_paly"
    android:layout_centerHorizontal="true"
    android:layout_marginTop="40dp"
    android:text="@string/stop_paly" />
</RelativeLayout>

package com.example.kk.soundrecording;
import java.io.File;
import java.io.IOException;
import com.example.kk.util.RecordPlayer;
import android.app.Activity;
import android.media.MediaRecorder;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
/**
 *
 * @author kk
 *
 */
public class MainActivity extends Activity implements OnClickListener {
  // 开始录音
  private Button start;
  // 停止按钮
  private Button stop;
  // 播放按钮
  private Button paly;
  // 暂停播放
  private Button pause_paly;
  // 停止播放
  private Button stop_paly;
  // 录音类
  private MediaRecorder mediaRecorder;
  // 以文件的形式保存
  private File recordFile;
  private RecordPlayer player;
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    recordFile = new File("/mnt/sdcard", "kk.amr");
    initView();
    Listener();
  }
  private void initView() {
    start = (Button) findViewById(R.id.start);
    stop = (Button) findViewById(R.id.stop);
    paly = (Button) findViewById(R.id.paly);
    pause_paly = (Button) findViewById(R.id.pause_paly);
    stop_paly = (Button) findViewById(R.id.stop_paly);
  }
  private void Listener() {
    start.setOnClickListener(this);
    stop.setOnClickListener(this);
    paly.setOnClickListener(this);
    pause_paly.setOnClickListener(this);
    stop_paly.setOnClickListener(this);
  }
  @Override
  public void onClick(View v) {
    player = new RecordPlayer(MainActivity.this);
    int Id = v.getId();
    switch (Id) {
    case R.id.start:
      startRecording();
      break;
    case R.id.stop:
      stopRecording();
      break;
    case R.id.paly:
      playRecording();
      break;
    case R.id.pause_paly:
      pauseplayer();
      break;
    case R.id.stop_paly:
      stopplayer();
      break;
    }
  }
  private void startRecording() {
    mediaRecorder = new MediaRecorder();
    // 判断，若当前文件已存在，则删除
    if (recordFile.exists()) {
      recordFile.delete();
    }
    mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
    mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.DEFAULT);
    mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT);
    mediaRecorder.setOutputFile(recordFile.getAbsolutePath());
    try {
      // 准备好开始录音
      mediaRecorder.prepare();
      mediaRecorder.start();
    } catch (IllegalStateException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    } catch (IOException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    }
  }
  private void stopRecording() {
    if (recordFile != null) {
      mediaRecorder.stop();
      mediaRecorder.release();
    }
  }
  private void playRecording() {
    player.playRecordFile(recordFile);
  }
  private void pauseplayer() {
    player.pausePalyer();
  }
  private void stopplayer() {
    // TODO Auto-generated method stub
    player.stopPalyer();
  }
}

package com.example.kk.util;
import java.io.File;
import android.content.Context;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnCompletionListener;
import android.net.Uri;
import android.util.Log;
import android.widget.Toast;
import com.example.kk.soundrecording.R;
/**
 *
 *
 * @author kk  录音播放类
 *
 */
public class RecordPlayer {
  private static MediaPlayer mediaPlayer;
  private Context mcontext;
  public RecordPlayer(Context context) {
    this.mcontext = context;
  }
  // 播放录音文件
  public void playRecordFile(File file) {
    if (file.exists() && file != null) {
      if (mediaPlayer == null) {
        Uri uri = Uri.fromFile(file);
        mediaPlayer = MediaPlayer.create(mcontext, uri);
      }
      mediaPlayer.start();
      //监听MediaPlayer播放完成
      mediaPlayer.setOnCompletionListener(new OnCompletionListener() {
        @Override
        public void onCompletion(MediaPlayer paramMediaPlayer) {
          // TODO Auto-generated method stub
          //弹窗提示
          Toast.makeText(mcontext,
              mcontext.getResources().getString(R.string.ok),
              Toast.LENGTH_SHORT).show();
        }
      });
    }
  }
  // 暂停播放录音
  public void pausePalyer() {
    if (mediaPlayer.isPlaying()) {
      mediaPlayer.pause();
      Log.e("TAG", "暂停播放");
    }
  }
  // 停止播放录音
  public void stopPalyer() {
    // 这里不调用stop()，调用seekto(0),把播放进度还原到最开始
    if (mediaPlayer.isPlaying()) {
      mediaPlayer.pause();
      mediaPlayer.seekTo(0);
      Log.e("TAG", "停止播放");
    }
  }
}

<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WAKE_LOCK" />