Android音频录制MediaRecorder之简易的录音软件

使用MediaRecorder的步骤：

1、创建MediaRecorder对象

2、调用MediRecorder对象的setAudioSource()方法设置声音的来源，一般传入MediaRecorder.MIC

3、调用MediaRecorder对象的setOutputFormat()设置所录制的音频文件的格式

4、调用MediaRecorder对象的setAudioRncoder()、setAudioEncodingBitRate(int bitRate)、setAudioSamlingRate(int SamplingRate)设置所录音的编码格式、编码位率、采样率等，

5、调用MediaRecorder对象的setOutputFile(String path)方法设置录制的音频文件的保存位置

6、调用MediaRecoder对象的Prepare()方法准备录制

7、调用MediaRecoder对象的start()方法开始录制

8、调用MediaRecoder对象的stop()方法停止录制，并调用release()方法释放资源

实例：

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

<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=".MainActivity" >        <LinearLayout         android:id="@+id/li1"        android:orientation="horizontal"        android:layout_width="match_parent"        android:layout_height="wrap_content">        <Button android:id="@+id/start"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_weight="1"            android:text="@string/start"/>         <Button android:id="@+id/stop"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_weight="1"            android:text="@string/stop"/>    </LinearLayout>    <ListView         android:id="@+id/list"        android:layout_below="@id/li1"        android:layout_width="match_parent"        android:layout_height="wrap_content"></ListView></RelativeLayout>

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="horizontal" >    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:id="@+id/show_file_name" />    <Button        android:id="@+id/bt_list_play"        android:layout_width="wrap_content"        android:layout_height="wrap_content"         android:text="@string/play"/>    <Button  android:id="@+id/bt_list_stop"        android:layout_width="wrap_content"        android:layout_height="wrap_content"         android:text="@string/list_stop"/></LinearLayout>

package com.android.xiong.mediarecordertest;import java.io.File;import java.io.IOException;import java.text.SimpleDateFormat;import android.app.Activity;import android.app.AlertDialog;import android.app.AlertDialog.Builder;import android.app.Dialog;import android.content.DialogInterface;import android.media.MediaPlayer;import android.media.MediaRecorder;import android.os.Bundle;import android.os.Environment;import android.view.LayoutInflater;import android.view.Menu;import android.view.View;import android.view.View.OnClickListener;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.Button;import android.widget.EditText;import android.widget.ListView;import android.widget.TextView;public class MainActivity extends Activity implements OnClickListener {private Button start;private Button stop;private ListView listView;// 录音文件播放private MediaPlayer myPlayer;// 录音private MediaRecorder myRecorder;// 音频文件保存地址private String path;private String paths = path;private File saveFilePath;// 所录音的文件String[] listFile = null;ShowRecorderAdpter showRecord;AlertDialog aler = null;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);start = (Button) findViewById(R.id.start);stop = (Button) findViewById(R.id.stop);listView = (ListView) findViewById(R.id.list);myPlayer = new MediaPlayer();myRecorder = new MediaRecorder();// 从麦克风源进行录音myRecorder.setAudioSource(MediaRecorder.AudioSource.DEFAULT);// 设置输出格式myRecorder.setOutputFormat(MediaRecorder.OutputFormat.DEFAULT);// 设置编码格式myRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT);showRecord = new ShowRecorderAdpter();if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {try {path = Environment.getExternalStorageDirectory().getCanonicalPath().toString()+ "/XIONGRECORDERS";File files = new File(path);if (!files.exists()) {files.mkdir();}listFile = files.list();} catch (IOException e) {e.printStackTrace();}}start.setOnClickListener(this);stop.setOnClickListener(this);if (listFile != null) {listView.setAdapter(showRecord);}}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {getMenuInflater().inflate(R.menu.main, menu);return true;}class ShowRecorderAdpter extends BaseAdapter {@Overridepublic int getCount() {return listFile.length;}@Overridepublic Object getItem(int arg0) {return arg0;}@Overridepublic long getItemId(int arg0) {return arg0;}@Overridepublic View getView(final int postion, View arg1, ViewGroup arg2) {View views = LayoutInflater.from(MainActivity.this).inflate(R.layout.list_show_filerecorder, null);TextView filename = (TextView) views.findViewById(R.id.show_file_name);Button plays = (Button) views.findViewById(R.id.bt_list_play);Button stop = (Button) views.findViewById(R.id.bt_list_stop);filename.setText(listFile[postion]);// 播放录音plays.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View arg0) {try {myPlayer.reset();myPlayer.setDataSource(path + "/" + listFile[postion]);if (!myPlayer.isPlaying()) {myPlayer.prepare();myPlayer.start();} else {myPlayer.pause();}} catch (IOException e) {e.printStackTrace();}}});// 停止播放stop.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View arg0) {if (myPlayer.isPlaying()) {myPlayer.stop();}}});return views;}}@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.start:final EditText filename = new EditText(this);Builder alerBuidler = new Builder(this);alerBuidler.setTitle("请输入要保存的文件名").setView(filename).setPositiveButton("确定",new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog,int which) {String text = filename.getText().toString();try {paths = path+ "/"+ text+ new SimpleDateFormat("yyyyMMddHHmmss").format(System.currentTimeMillis())+ ".amr";saveFilePath = new File(paths);myRecorder.setOutputFile(saveFilePath.getAbsolutePath());saveFilePath.createNewFile();myRecorder.prepare();// 开始录音myRecorder.start();start.setText("正在录音中。。");start.setEnabled(false);aler.dismiss();// 重新读取 文件File files = new File(path);listFile = files.list();// 刷新ListViewshowRecord.notifyDataSetChanged();} catch (Exception e) {e.printStackTrace();}}});aler = alerBuidler.create();aler.setCanceledOnTouchOutside(false);aler.show();break;case R.id.stop:if (saveFilePath.exists() && saveFilePath != null) {myRecorder.stop();myRecorder.release();// 判断是否保存 如果不保存则删除new AlertDialog.Builder(this).setTitle("是否保存该录音").setPositiveButton("确定", null).setNegativeButton("取消",new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog,int which) {saveFilePath.delete();// 重新读取 文件File files = new File(path);listFile = files.list();// 刷新ListViewshowRecord.notifyDataSetChanged();}}).show();}start.setText("录音");start.setEnabled(true);default:break;}}@Overrideprotected void onDestroy() {// 释放资源if (myPlayer.isPlaying()) {myPlayer.stop();myPlayer.release();}myPlayer.release();myRecorder.release();super.onDestroy();}}

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源码地址：http://download.csdn.net/detail/x605940745/6870213

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