您好,登录后才能下订单哦!
这期内容当中小编将会给大家带来有关在Android应用中实现一个录音播放功能,文章内容丰富且以专业的角度为大家分析和叙述,阅读完这篇文章希望大家可以有所收获。
播放音频文件
/** * Created by zhb on 2017/1/16. * 音乐在线播放 */ public class PlayManager { private Context mcontext; public PlayManager(Context context){ this.mcontext = context; } public void play(String song){ MediaPlayer mp = new MediaPlayer(); try { // 存储在SD卡或其他文件路径下的媒体文件 // 例如:mp.setDataSource("/sdcard/test.mp3"); // 网络上的媒体文件 // 例如:mp.setDataSource("http://www...../music/test.mp3"); mp.setDataSource(song); mp.prepare(); mp.start(); } catch (Exception e) { e.printStackTrace(); } } }
2.录制amr格式音频文件(微信语音便用的这种格式,至于音频文件格式之间的比较请自行百度)
/** * Created by zhb on 2017/1/16. * 本地录音 */ public class RecordManager { //录制成amr格式............................................................ private Context mcontext; MediaRecorder mediaRecorder ; public RecordManager(Context context){ this.mcontext = context; //TODO 初始化安装路径,录音流程 } /**开始录制*/ public void start_amr(){ mediaRecorder = new MediaRecorder(); /** * mediaRecorder.setAudioSource设置声音来源。 * MediaRecorder.AudioSource这个内部类详细的介绍了声音来源。 * 该类中有许多音频来源,不过最主要使用的还是手机上的麦克风,MediaRecorder.AudioSource.MIC */ mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC); /** * mediaRecorder.setOutputFormat代表输出文件的格式。该语句必须在setAudioSource之后,在prepare之前。 * OutputFormat内部类,定义了音频输出的格式,主要包含MPEG_4、THREE_GPP、RAW_AMR……等。 */ mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.AMR_NB); /** * mediaRecorder.setAddioEncoder()方法可以设置音频的编码 * AudioEncoder内部类详细定义了两种编码:AudioEncoder.DEFAULT、AudioEncoder.AMR_NB */ mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB); /** * 设置录音之后,保存音频文件的位置,一般是SD卡的位置 */ mediaRecorder.setOutputFile(String.valueOf(PathManger.getVoicePath())); /** * 调用start开始录音之前,一定要调用prepare方法。 */ try { mediaRecorder.prepare(); mediaRecorder.start(); } catch (IllegalStateException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } /**停止录音*/ public void stop_amr(){ mediaRecorder.stop(); mediaRecorder.release(); mediaRecorder = null; } /**重置录音*/ public void reset_amr(){ mediaRecorder.reset(); } }
3、配置转换工具包(这个比较简单,配置以下文件即可)
添加flame.jar,并在armeabi和armeabi-v7a文件夹添加libmp3lame.so
资源文件:http://xiazai.jb51.net/201701/yuanma/androidlibmp3lame(jb51.net).rar
4、录制MP3格式音频文件(个人觉得这种格式能比较好的统一Android端和iOS端的音频文件,虽然方法相对比较繁杂一些)
/** * Created by zhb on 2017/1/16. * 本地录音 */ public class RecordManager { //录制成MP3格式.............................................. /**构造时候需要的Activity,主要用于获取文件夹的路径*/ private Activity activity; /**文件代号*/ public static final int RAW = 0X00000001; public static final int MP3 = 0X00000002; /**文件路径*/ private String rawPath = null; private String mp3Path = null; /**采样频率*/ private static final int SAMPLE_RATE = 11025; /**录音需要的一些变量*/ private short[] mBuffer; private AudioRecord mRecorder; /**录音状态*/ private boolean isRecording = false; /**是否转换ok*/ private boolean convertOk = false; public RecordManager(Activity activity, String rawPath, String mp3Path) { this.activity = activity; this.rawPath = rawPath; this.mp3Path = mp3Path; } /**开始录音*/ public boolean start_mp3() { // 如果正在录音,则返回 if (isRecording) { return isRecording; } // 初始化 if (mRecorder == null) { initRecorder(); } getFilePath(); mRecorder.startRecording(); startBufferedWrite(new File(rawPath)); isRecording = true; return isRecording; } /**停止录音,并且转换文件,这很可能是个耗时操作,建议在后台中做*/ public boolean stop_mp3() { if (!isRecording) { return isRecording; } // 停止 mRecorder.stop(); isRecording = false; //TODO // 开始转换 FLameUtils lameUtils = new FLameUtils(1, SAMPLE_RATE, 96); convertOk = lameUtils.raw2mp3(rawPath, mp3Path); return isRecording ^ convertOk;// convertOk==true,return true } /**获取文件的路径*/ public String getFilePath(int fileAlias) { if (fileAlias == RAW) { return rawPath; } else if (fileAlias == MP3) { return mp3Path; } else return null; } /**清理文件*/ public void cleanFile(int cleanFlag) { File f = null; try { switch (cleanFlag) { case MP3: f = new File(mp3Path); if (f.exists()) f.delete(); break; case RAW: f = new File(rawPath); if (f.exists()) f.delete(); break; case RAW | MP3: f = new File(rawPath); if (f.exists()) f.delete(); f = new File(mp3Path); if (f.exists()) f.delete(); break; } f = null; } catch (Exception e) { e.printStackTrace(); } } /**关闭,可以先调用cleanFile来清理文件*/ public void close() { if (mRecorder != null) mRecorder.release(); activity = null; } /**初始化*/ private void initRecorder() { int bufferSize = AudioRecord.getMinBufferSize(SAMPLE_RATE, AudioFormat.CHANNEL_IN_MONO, AudioFormat.ENCODING_PCM_16BIT); mBuffer = new short[bufferSize]; mRecorder = new AudioRecord(MediaRecorder.AudioSource.MIC, SAMPLE_RATE, AudioFormat.CHANNEL_IN_MONO, AudioFormat.ENCODING_PCM_16BIT, bufferSize); } /**设置路径,第一个为raw文件,第二个为mp3文件*/ private void getFilePath() { try { String folder = "audio_recorder_2_mp3"; String fileName = String.valueOf(System.currentTimeMillis()); if (rawPath == null) { File raw = new File(activity.getDir(folder, activity.MODE_PRIVATE), fileName + ".raw"); raw.createNewFile(); rawPath = raw.getAbsolutePath(); raw = null; } if (mp3Path == null) { File mp3 = new File(activity.getDir(folder, activity.MODE_PRIVATE), fileName + ".mp3"); mp3.createNewFile(); mp3Path = mp3.getAbsolutePath(); mp3 = null; } Log.d("rawPath", rawPath); Log.d("mp3Path", mp3Path); runCommand("chmod 777 " + rawPath); runCommand("chmod 777 " + mp3Path); } catch (Exception e) { e.printStackTrace(); } } /**执行cmd命令,并等待结果*/ private boolean runCommand(String command) { boolean ret = false; Process process = null; try { process = Runtime.getRuntime().exec(command); process.waitFor(); ret = true; } catch (Exception e) { e.printStackTrace(); } finally { try { process.destroy(); } catch (Exception e) { e.printStackTrace(); } } return ret; } /**写入到raw文件*/ private void startBufferedWrite(final File file) { new Thread(new Runnable() { @Override public void run() { DataOutputStream output = null; try { output = new DataOutputStream(new BufferedOutputStream( new FileOutputStream(file))); while (isRecording) { int readSize = mRecorder.read(mBuffer, 0, mBuffer.length); for (int i = 0; i < readSize; i++) { output.writeShort(mBuffer[i]); } } } catch (IOException e) { e.printStackTrace(); } finally { if (output != null) { try { output.flush(); } catch (IOException e) { e.printStackTrace(); } finally { try { output.close(); } catch (IOException e) { e.printStackTrace(); } } } } } }).start(); } }
5、最后在自己想调用的地方调用就好了,PathManger这个是我自己的路径管理工具,这里不贴了,反正自己直接放一个路径字符串进去就好了
/**初始化语音*/ private void initVoice() { //录音 RecordManager = new RecordManager( CallHelpActivity.this, String.valueOf(PathManger.getVoicePathToRaw()), String.valueOf(PathManger.getVoicePathToMp3())); callHelp_Voice_longclick.setOnTouchListener(new View.OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { switch(event.getAction()){ case MotionEvent.ACTION_DOWN: RecordManager.start_mp3(); break; case MotionEvent.ACTION_MOVE: break; case MotionEvent.ACTION_UP: RecordManager.stop_mp3(); break; } return false; } }); //语音播放 final PlayManager PlayManager = new PlayManager(this); callHelp_Voice_click.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { PlayManager.play(String.valueOf(PathManger.getVoicePathToMp3())); } }); }
上述就是小编为大家分享的在Android应用中实现一个录音播放功能了,如果刚好有类似的疑惑,不妨参照上述分析进行理解。如果想知道更多相关知识,欢迎关注亿速云行业资讯频道。
免责声明:本站发布的内容(图片、视频和文字)以原创、转载和分享为主,文章观点不代表本网站立场,如果涉及侵权请联系站长邮箱:is@yisu.com进行举报,并提供相关证据,一经查实,将立刻删除涉嫌侵权内容。