Android 录音组件MediaRecorder的使用 提供完整源码

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<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<Button android:id="@+id/start"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="开始录音"
/>
<Button android:id="@+id/stop"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="停止"
/>
</LinearLayout>

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package com.pocketdigi;

import android.app.Activity;
import android.media.MediaRecorder;
import android.media.MediaRecorder.AudioSource;
import android.media.MediaRecorder.OutputFormat;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class MediaRecorderActivity extends Activity {
Button start,stop;
MediaRecorder mr;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
start=(Button)findViewById(R.id.start);
stop=(Button)findViewById(R.id.stop);

start.setOnClickListener(new OnClickListener(){

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
mr=new MediaRecorder();
mr.setAudioSource(AudioSource.MIC);
//设置音源,这里是来自麦克风,虽然有VOICE_CALL,但经真机测试,不行
mr.setOutputFormat(OutputFormat.RAW_AMR);
//输出格式
mr.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
//编码
mr.setOutputFile("/sdcard/1.amr");
//输出文件路径,貌似文件必须是不存在的,不会自己清空
try{
mr.prepare();
//做些准备工作
mr.start();
//开始
}catch(Exception e){
e.printStackTrace();
}
}});
stop.setOnClickListener(new OnClickListener(){

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
mr.stop();
//停止
mr.release();
//释放
}});

}
}

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