Android编程开发录音和播放录音简单示例

概述本文实例讲述了Android编程开发录音和播放录音的方法。分享给大家供大家参考，具体如下：

本文实例讲述了AndroID编程开发录音和播放录音的方法。分享给大家供大家参考，具体如下：

/* * The application needs to have the permission to write to external storage * if the output file is written to the external storage,and also the * permission to record audio. These permissions must be set in the * application's AndroIDManifest.xml file,with something like: * * <uses-permission androID:name="androID.permission.WRITE_EXTERNAL_STORAGE" /> * <uses-permission androID:name="androID.permission.RECORD_AUdio" /> * */package com.androID.audiorecordtest;import androID.app.Activity;import androID.Widget.linearLayout;import androID.os.Bundle;import androID.os.Environment;import androID.vIEw.VIEwGroup;import androID.Widget.button;import androID.vIEw.VIEw;import androID.vIEw.VIEw.OnClickListener;import androID.content.Context;import androID.util.Log;import androID.media.MediaRecorder;import androID.media.MediaPlayer;import java.io.IOException;public class AudioRecordTest extends Activity{  private static final String LOG_TAG = "AudioRecordTest";  private static String mfilename = null;  private Recordbutton mRecordbutton = null;  private MediaRecorder mRecorder = null;  private Playbutton  mPlaybutton = null;  private MediaPlayer  mPlayer = null;  private voID onRecord(boolean start) {    if (start) {      startRecording();    } else {      stopRecording();    }  }  private voID onPlay(boolean start) {    if (start) {      startPlaying();    } else {      stopPlaying();    }  }  private voID startPlaying() {    mPlayer = new MediaPlayer();    try {      mPlayer.setDataSource(mfilename);      mPlayer.prepare();      mPlayer.start();    } catch (IOException e) {      Log.e(LOG_TAG,"prepare() @R_403_5138@");    }  }  private voID stopPlaying() {    mPlayer.release();    mPlayer = null;  }  private voID startRecording() {    mRecorder = new MediaRecorder();    mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);    mRecorder.setoutputFormat(MediaRecorder.OutputFormat.THREE_GPP);    mRecorder.setoutputfile(mfilename);    mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);    try {      mRecorder.prepare();    } catch (IOException e) {      Log.e(LOG_TAG,"prepare() @R_403_5138@");    }    mRecorder.start();  }  private voID stopRecording() {    mRecorder.stop();    mRecorder.release();    mRecorder = null;  }  class Recordbutton extends button {    boolean mStartRecording = true;    OnClickListener clicker = new OnClickListener() {      public voID onClick(VIEw v) {        onRecord(mStartRecording);        if (mStartRecording) {          setText("Stop recording");        } else {          setText("Start recording");        }        mStartRecording = !mStartRecording;      }    };    public Recordbutton(Context ctx) {      super(ctx);      setText("Start recording");      setonClickListener(clicker);    }  }  class Playbutton extends button {    boolean mStartPlaying = true;    OnClickListener clicker = new OnClickListener() {      public voID onClick(VIEw v) {        onPlay(mStartPlaying);        if (mStartPlaying) {          setText("Stop playing");        } else {          setText("Start playing");        }        mStartPlaying = !mStartPlaying;      }    };    public Playbutton(Context ctx) {      super(ctx);      setText("Start playing");      setonClickListener(clicker);    }  }  public AudioRecordtest() {    mfilename = Environment.getExternalStorageDirectory().getabsolutePath();    mfilename += "/audiorecordtest.3gp";  }  @OverrIDe  public voID onCreate(Bundle icicle) {    super.onCreate(icicle);    linearLayout ll = new linearLayout(this);    mRecordbutton = new Recordbutton(this);    ll.addVIEw(mRecordbutton,new linearLayout.LayoutParams(        VIEwGroup.LayoutParams.WRAP_CONTENT,VIEwGroup.LayoutParams.WRAP_CONTENT,0));    mPlaybutton = new Playbutton(this);    ll.addVIEw(mPlaybutton,0));    setContentVIEw(ll);  }  @OverrIDe  public voID onPause() {    super.onPause();    if (mRecorder != null) {      mRecorder.release();      mRecorder = null;    }    if (mPlayer != null) {      mPlayer.release();      mPlayer = null;    }  }}

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希望本文所述对大家AndroID程序设计有所帮助。

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