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