Androide AudioRecorder（Wav Recorder）错误 [英] Androide AudioRecorder (Wav Recorder) error
本文介绍了Androide AudioRecorder（Wav Recorder）错误的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我正在开发一个Android应用程序，我想在其中录制wav格式的用户语音并对其进行处理。我想要22050Hz的采样率和16位带单声道的签名格式。我通过在谷歌上搜索得到了一些代码并在我的应用程序中集成了相同的但是当我运行我的应用程序时它给了我3个错误：
I am working on an android app in which I want to record user voice in wav format and do processing on it. I want sample rate of 22050Hz and 16 bit signed format with mono channel. I got some code by searching on google and integrated the same in my app but as I run my app it gives me 3 errors:
E/AudioRecord: AudioFlinger could not create record track, status: -1
E/AudioRecord-JNI: Error creating AudioRecord instance: initialization check failed with status -1.
E/android.media.AudioRecord: Error code -20 when initializing native AudioRecord object.
我已添加权限在清单中，但错误仍然存在。
1。 Wavrecordnew.java
I have added the permission in the manifest but the error persists.
1. Wavrecordnew.java
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.TimerTask;
import java.util.Timer;
import android.app.Activity;
import android.media.AudioFormat;
import android.media.AudioRecord;
import android.media.MediaRecorder;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.view.View;
import android.widget.Button;
public class Wavrecordernew {
private static final int RECORDER_BPP = 16;
private static final String AUDIO_RECORDER_FILE_EXT_WAV = ".wav";
private static final String AUDIO_RECORDER_FOLDER = "Automator";
private static final String AUDIO_RECORDER_TEMP_FILE = "record_temp.raw";
private static final int RECORDER_SAMPLERATE = 22050;
private static final int RECORDER_CHANNELS = AudioFormat.CHANNEL_IN_MONO;
private static final int RECORDER_AUDIO_ENCODING = AudioFormat.ENCODING_PCM_16BIT;
private static AudioRecord recorder = null;
private static int bufferSize = 0;
//bufferSize *= 2;
private static Thread recordingThread = null;
private static boolean isRecording = false;
private static String filenme,wavpath;
// bufferSize = AudioRecord.getMinBufferSize(8000,AudioFormat.CHANNEL_CONFIGURATION_MONO,AudioFormat.ENCODING_PCM_16BIT);
private static String getFilename(){
String filepath = wavpath;
File file = new File(filepath,AUDIO_RECORDER_FOLDER);
if(!file.exists()){
file.mkdirs();
}
return (file.getAbsolutePath() + "/" + filenme);
}
private static String getTempFilename(){
String filepath = wavpath;
File file = new File(filepath,AUDIO_RECORDER_FOLDER);
if(!file.exists()){
file.mkdirs();
}
File tempFile = new File(filepath,AUDIO_RECORDER_TEMP_FILE);
if(tempFile.exists())
tempFile.delete();
return (file.getAbsolutePath() + "/" + AUDIO_RECORDER_TEMP_FILE);
}
public static void startRecording(String filepathfrmdis, String filenamefrmdis){
bufferSize = (AudioRecord.getMinBufferSize(RECORDER_SAMPLERATE,AudioFormat.CHANNEL_IN_MONO,AudioFormat.ENCODING_PCM_16BIT))*200;
filenme = filenamefrmdis;
wavpath = filepathfrmdis;
recorder = new AudioRecord(MediaRecorder.AudioSource.MIC,RECORDER_SAMPLERATE, RECORDER_CHANNELS,RECORDER_AUDIO_ENCODING, bufferSize);
int i = recorder.getState();
if(i==1)
recorder.startRecording();
isRecording = true;
recordingThread = new Thread(new Runnable() {
@Override
public void run() {
writeAudioDataToFile();
}
},"AudioRecorder Thread");
recordingThread.start();
new java.util.Timer().schedule(
new java.util.TimerTask() {
@Override
public void run() {
stopRecording();
}
},
9000
);
}
private static void writeAudioDataToFile(){
byte data[] = new byte[bufferSize];
String filename = getTempFilename();
FileOutputStream os = null;
try {
os = new FileOutputStream(filename);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
int read = 0;
if(null != os){
while(isRecording){
read = recorder.read(data, 0, bufferSize);
if(AudioRecord.ERROR_INVALID_OPERATION != read){
try {
os.write(data);
} catch (IOException e) {
e.printStackTrace();
}
}
}
try {
os.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
private static void stopRecording(){
if(null != recorder){
isRecording = false;
int i = recorder.getState();
if(i==1)
recorder.stop();
recorder.release();
recorder = null;
recordingThread = null;
}
copyWaveFile(getTempFilename(),getFilename());
deleteTempFile();
}
private static void deleteTempFile() {
File file = new File(getTempFilename());
file.delete();
}
private static void copyWaveFile(String inFilename,String outFilename){
FileInputStream in = null;
FileOutputStream out = null;
long totalAudioLen = 0;
long totalDataLen = totalAudioLen + 36;
long longSampleRate = RECORDER_SAMPLERATE;
int channels = 2;
long byteRate = RECORDER_BPP * RECORDER_SAMPLERATE * channels/8;
byte[] data = new byte[bufferSize];
try {
in = new FileInputStream(inFilename);
out = new FileOutputStream(outFilename);
totalAudioLen = in.getChannel().size();
totalDataLen = totalAudioLen + 36;
//AppLog.logString("File size: " + totalDataLen);
WriteWaveFileHeader(out, totalAudioLen, totalDataLen,
longSampleRate, channels, byteRate);
while(in.read(data) != -1){
out.write(data);
}
in.close();
out.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
private static void WriteWaveFileHeader(
FileOutputStream out, long totalAudioLen,
long totalDataLen, long longSampleRate, int channels,
long byteRate) throws IOException {
byte[] header = new byte[44];
header[0] = 'R'; // RIFF/WAVE header
header[1] = 'I';
header[2] = 'F';
header[3] = 'F';
header[4] = (byte) (totalDataLen & 0xff);
header[5] = (byte) ((totalDataLen >> 8) & 0xff);
header[6] = (byte) ((totalDataLen >> 16) & 0xff);
header[7] = (byte) ((totalDataLen >> 24) & 0xff);
header[8] = 'W';
header[9] = 'A';
header[10] = 'V';
header[11] = 'E';
header[12] = 'f'; // 'fmt ' chunk
header[13] = 'm';
header[14] = 't';
header[15] = ' ';
header[16] = 16; // 4 bytes: size of 'fmt ' chunk
header[17] = 0;
header[18] = 0;
header[19] = 0;
header[20] = 1; // format = 1
header[21] = 0;
header[22] = (byte) channels;
header[23] = 0;
header[24] = (byte) (longSampleRate & 0xff);
header[25] = (byte) ((longSampleRate >> 8) & 0xff);
header[26] = (byte) ((longSampleRate >> 16) & 0xff);
header[27] = (byte) ((longSampleRate >> 24) & 0xff);
header[28] = (byte) (byteRate & 0xff);
header[29] = (byte) ((byteRate >> 8) & 0xff);
header[30] = (byte) ((byteRate >> 16) & 0xff);
header[31] = (byte) ((byteRate >> 24) & 0xff);
header[32] = (byte) (2 * 16 / 8); // block align
header[33] = 0;
header[34] = RECORDER_BPP; // bits per sample
header[35] = 0;
header[36] = 'd';
header[37] = 'a';
header[38] = 't';
header[39] = 'a';
header[40] = (byte) (totalAudioLen & 0xff);
header[41] = (byte) ((totalAudioLen >> 8) & 0xff);
header[42] = (byte) ((totalAudioLen >> 16) & 0xff);
header[43] = (byte) ((totalAudioLen >> 24) & 0xff);
out.write(header, 0, 44);
}
}
2。 DisplayRecordingMessageActivity.java（调用wave录音机）
2. DisplayRecordingMessageActivity.java (Calling to wave recorder)
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;
import java.io.File;
public class DisplayRecordingMessageActivity extends AppCompatActivity {
public final static String EXTRA_MESSAGE_USER_NAME = "com.mycompany.myfirstapp.MESSAGE";
private static Wavrecordernew mRecorder;
//private static Wavrecordernew mRecordernew;
private static int filenum = 1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_display_recording_message);
Intent intentrecordingtranfred = getIntent();
String message = intentrecordingtranfred.getStringExtra(MyActivity.EXTRA_MESSAGE_RECORDING);
TextView textView = (TextView) findViewById(R.id.recorderintructionstxtView);
textView.setText(message);
textView.setTextSize(16);
}
/** Called when the user clicks the Save button */
public void saveusername(View view) {
EditText editUsername = (EditText) findViewById(R.id.edit_username);
String username = editUsername.getText().toString();
if (!("").equals(username)) {
String filename = username + filenum + ".wav";
String wavfilepath = this.getFilesDir().getPath();
mRecorder.startRecording(wavfilepath,filename);
}
else
{
//popup saying please enter username and press save
AlertDialog.Builder builder1 = new AlertDialog.Builder(DisplayRecordingMessageActivity.this);
builder1.setTitle("Invalid");
builder1.setMessage("Please Enter your name and then press save");
builder1.setCancelable(false);
//builder1.setIcon(R.drawable.delete);
builder1.setPositiveButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dialog.cancel();
}
});
AlertDialog alert11 = builder1.create();
alert11.show();
}
}
}
3。 AndroidManifest.xml
3. AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="in.automator.automator">
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="15" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity
android:name=".MyActivity"
android:label="@string/app_name"
android:theme="@style/AppTheme.NoActionBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".DisplayRecordingMessageActivity"
android:label="@string/title_activity_display_recording_message"
android:parentActivityName=".MyActivity"
android:theme="@style/AppTheme.NoActionBar">
<meta-data
android:name="android.support.PARENT_ACTIVITY"
android:value="in.automator.automator.MyActivity" />
</activity>
</application>
<uses-permission android:name="android.permission.RECORD_AUDIO"></uses-permission>
</manifest>
I am looking for solutions since last 5 days.
Thanks in advance.
I am looking for solutions since last 5 days.
Thanks in advance.
推荐答案
I would suggest you 2 things here:
1. Use
I would suggest you 2 things here:
1. Use
<uses-permission android:name="android.permission.RECORD_AUDIO"></uses-permission> before </application> tag, not after of it.
2. Have you run this once and not called recordInstance.release()? If so you may have tied up audio resources and it will likely not work until you restart the phone.
before </application> tag, not after of it.
2. Have you run this once and not called recordInstance.release()? If so you may have tied up audio resources and it will likely not work until you restart the phone.
You should use this method for your problem.
You should use this method for your problem.
@RequiresApi(api = Build.VERSION_CODES.M)
public void getPermissionToRecordAudio() {
// 1) Use the support library version ContextCompat.checkSelfPermission(...) to avoid
// checking the build version since Context.checkSelfPermission(...)
// 2) Always check for permission (even if permission has already been granted)
// since the user can revoke permissions at any time through Settings
if (ContextCompat.checkSelfPermission(this, Manifest.permission.RECORD_AUDIO) != PackageManager.PERMISSION_GRANTED
|| ContextCompat.checkSelfPermission(this, Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED
|| ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED ) {
// The permission is NOT already granted.
// Check if the user has been asked about this permission already and denied
// it. If so, we want to give more explanation about why the permission is needed.
// Fire off an async request to actually get the permission
// This will show the standard permission request dialog UI
requestPermissions(new String[]{Manifest.permission.READ_EXTERNAL_STORAGE, Manifest.permission.RECORD_AUDIO, Manifest.permission.WRITE_EXTERNAL_STORAGE},
RECORD_AUDIO_REQUEST_CODE);
}
}
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