如何采用Android 1.5我录音？ [英] How do I record audio using Android 1.5?

问题描述

如何使用Android的我记录一些声音？

解决方案

 包com.benmccann.android.hello;

进口的java.io.File;
进口java.io.IOException异常;

进口android.media.MediaRecorder;
进口android.os.Environment;

/ **
 * @author＆所述; A HREF =htt​​p://www.benmccann.com＆GT;奔麦肯＆所述; / a取代;
 * /
公共类AudioRecorder {

  最后MediaRecorder记录=新MediaRecorder（）;
  最后弦乐路径;

  / **
   *创建在给定路径中的新录音（相对于SD卡的根目录）。
   * /
  公共AudioRecorder（字符串路径）{
    this.path = sanitizePath（路径）;
  }

  私人字符串sanitizePath（字符串路径）{
    如果（！path.startsWith（/））{
      路径=/+路径;
    }
    如果（！path.contains（。））{
      路径+ =名为.3gp;
    }
    返回Environment.getExternalStorageDirectory（）getAbsolutePath（）+路径。
  }

  / **
   *开始一个新的记录。
   * /
  公共无效启动（）抛出IOException异常{
    字符串状态= android.os.Environment.getExternalStorageState（）;
    如果（！state.equals（android.os.Environment.MEDIA_MOUNTED））{
        抛出新的IOException异常（SD卡未安装它。+ +的状态。）;
    }

    //确保目录，我们计划在用来存放记录
    文件目录=新的文件（路径）.getParentFile（）;
    如果（directory.exists（）及！＆安培;！directory.mkdirs（））{
      抛出新的IOException异常（路径文件无法被创建。）;
    }

    recorder.setAudioSource（MediaRecorder.AudioSource.MIC）;
    recorder.setOutputFormat（MediaRecorder.OutputFormat.THREE_GPP）;
    recorder.setAudioEn codeR（MediaRecorder.AudioEn coder.AMR_NB）;
    recorder.setOutputFile（路径）;
    。录音机prepare（）;
    recorder.start（）;
  }

  / **
   *停止已previously开始录音。
   * /
  公共无效停止（）抛出IOException异常{
    recorder.stop（）;
    recorder.release（）;
  }
}
 

从 http://www.benmccann.com/dev-博客/ Android的音频录音的教程/

How do I record some audio using Android?

解决方案

package com.benmccann.android.hello;

import java.io.File;
import java.io.IOException;

import android.media.MediaRecorder;
import android.os.Environment;

/**
 * @author <a href="http://www.benmccann.com">Ben McCann</a>
 */
public class AudioRecorder {

  final MediaRecorder recorder = new MediaRecorder();
  final String path;

  /**
   * Creates a new audio recording at the given path (relative to root of SD card).
   */
  public AudioRecorder(String path) {
    this.path = sanitizePath(path);
  }

  private String sanitizePath(String path) {
    if (!path.startsWith("/")) {
      path = "/" + path;
    }
    if (!path.contains(".")) {
      path += ".3gp";
    }
    return Environment.getExternalStorageDirectory().getAbsolutePath() + path;
  }

  /**
   * Starts a new recording.
   */
  public void start() throws IOException {
    String state = android.os.Environment.getExternalStorageState();
    if(!state.equals(android.os.Environment.MEDIA_MOUNTED))  {
        throw new IOException("SD Card is not mounted.  It is " + state + ".");
    }

    // make sure the directory we plan to store the recording in exists
    File directory = new File(path).getParentFile();
    if (!directory.exists() && !directory.mkdirs()) {
      throw new IOException("Path to file could not be created.");
    }

    recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
    recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
    recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
    recorder.setOutputFile(path);
    recorder.prepare();
    recorder.start();
  }

  /**
   * Stops a recording that has been previously started.
   */
  public void stop() throws IOException {
    recorder.stop();
    recorder.release();
  }
}

From http://www.benmccann.com/dev-blog/android-audio-recording-tutorial/

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