文件未发现异常的录音

Question

火腿在我的项目做录音和火腿越来越找不到文件例外，我给的权限也清单文件

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
    package="com.android.audio" 
    android:versionCode="1" 
    android:versionName="1.0" > 



    <application 
     android:icon="@drawable/ic_launcher" 
     android:label="@string/app_name" > 
     <activity 
      android:label="@string/app_name" 
      android:name=".AudioRecordActivity" > 
      <intent-filter > 
       <action android:name="android.intent.action.MAIN" /> 

       <category android:name="android.intent.category.LAUNCHER" /> 
      </intent-filter> 
     </activity> 
    </application> 
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> 
    <uses-permission android:name="android.permission.RECORD_AUDIO" /> 

</manifest> 

和我的项目源代码如下

package com.android.audio; 

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 AudioRecordActivity 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() failed"); 
     } 
    } 

    private void stopPlaying() { 
     mPlayer.release(); 
     mPlayer = null; 
    } 

    private void startRecording() { 
     mRecorder = new MediaRecorder(); 
     mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC); 
     mRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4); 
     mRecorder.setOutputFile(mFileName); 
     mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB); 

     try { 
      mRecorder.prepare(); 
     } catch (IOException e) { 
      Log.e(LOG_TAG, "prepare() failed"); 
     } 

     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 AudioRecordActivity() { 
     mFileName = Environment.getExternalStorageDirectory().getAbsolutePath(); 
     mFileName += "/audiorecordtest.mp4"; 
    } 

    @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, 
      new LinearLayout.LayoutParams(
       ViewGroup.LayoutParams.WRAP_CONTENT, 
       ViewGroup.LayoutParams.WRAP_CONTENT, 
       0)); 
     setContentView(ll); 
    } 

    @Override 
    public void onPause() { 
     super.onPause(); 
     if (mRecorder != null) { 
      mRecorder.release(); 
      mRecorder = null; 
     } 

     if (mPlayer != null) { 
      mPlayer.release(); 
      mPlayer = null; 
     } 
    } 
} 

plz帮助我咸新区到Android ..

Answer 1

我只是解决了这个问题。 我正在使用“模拟器的API 2.3”。

我用api 2.2创建了新的模拟器，它运行正常，没有任何错误。

所以我认为这是一个错误或类似的问题。