Android音频录制MediaRecorder之简易的录音软件实现代码

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;

 @override
 protected 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);
  }

 }

 @override
 public boolean oncreateoptionsmenu(menu menu) {
  getmenuinflater().inflate(r.menu.main, menu);
  return true;
 }

 class showrecorderadpter extends baseadapter {

  @override
  public int getcount() {
   return listfile.length;
  }

  @override
  public object getitem(int arg0) {
   return arg0;
  }

  @override
  public long getitemid(int arg0) {
   return arg0;

  }

  @override
  public 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() {
    @override
    public 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() {

    @override
    public void onclick(view arg0) {
     if (myplayer.isplaying()) {
      myplayer.stop();
     }
    }
   });
   return views;
  }

 }

 @override
 public 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() {
        @override
        public 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listview
          showrecord.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() {
         @override
         public void onclick(dialoginterface dialog,
           int which) {
          savefilepath.delete();
          // 重新读取 文件
          file files = new file(path);
          listfile = files.list();
          // 刷新listview
          showrecord.notifydatasetchanged();
         }
        }).show();

   }
   start.settext("录音");
   start.setenabled(true);
  default:
   break;
  }

 }

 @override
 protected void ondestroy() {
  // 释放资源
  if (myplayer.isplaying()) {
   myplayer.stop();
   myplayer.release();
  }
  myplayer.release();
  myrecorder.release();
  super.ondestroy();
 }

}

源码下载：http://xiazai.jb51.net/201401/yuanma/mediarecordertest(jb51.net).rar