Я разрабатываю приложение для Android (2.2) для записи аудио.Код работает нормально и даже сохраняет файлы на SD-карте, но когда я пытаюсь воспроизвести аудиофайлы на моем Mac, ничего не происходит.Почти как файлы пусты.Я пытался сохранить их как .mp3 и .wav, но не повезло.Мой код ниже:
import java.io.File;
import java.io.IOException;
import android.media.MediaRecorder;
import android.os.Environment;
public class AudioRecorder {
private MediaRecorder recorder = new MediaRecorder();
private File outfile = null;
public AudioRecorder(){}
public void startRecording(String audioFile) 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.");
}
try{
File storageDir = new File(Environment
.getExternalStorageDirectory(), "/audio/");
storageDir.mkdir();
outfile=File.createTempFile(audioFile, ".wav",storageDir);
recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
recorder.setOutputFormat(MediaRecorder.OutputFormat.RAW_AMR);
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
recorder.setOutputFile(outfile.getAbsolutePath());
}catch(IOException e){
e.printStackTrace();
}
try{
recorder.prepare();
}catch(IllegalStateException e){
e.printStackTrace();
}
recorder.start();
}
public void stop() throws IOException {
recorder.stop();
recorder.release();
}
}
Моя активность:
/**
* Recording Activity
*/
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import com.seekika.android.app.helpers.AudioRecorder;
import android.app.Activity;
import android.media.MediaRecorder;
import android.os.Bundle;
import android.os.Environment;
import android.os.SystemClock;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.Chronometer;
public class Record extends Activity {
private static final String TAG="RecordActivity";
private int SETTINGS=Menu.FIRST;
private int LOGOUT=Menu.FIRST + 1;
private int EXIT=Menu.FIRST + 2;
//components
private Button mBtnStartRecording;
private Button mBtnStopRecording;
private Chronometer mChronometer;
private String audioFileName="";
final AudioRecorder recorder = new AudioRecorder();
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.recordstory);
initComponents();
}
public void initComponents(){
mChronometer=(Chronometer)findViewById(R.id.chrono);
mBtnStopRecording=(Button)findViewById(R.id.btn_stop_recording);
mBtnStopRecording.setEnabled(false);
mBtnStopRecording.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//stop timer
stopRecording();
//stop recording and save audio file to SD card
}
});
mBtnStartRecording=(Button)findViewById(R.id.btn_start_recording);
mBtnStartRecording.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
startRecording();
mBtnStartRecording.setEnabled(false);
mBtnStopRecording.setEnabled(true);
//start recording audio
//start timer
}
});
}
private void startRecording(){
mChronometer.setBase(SystemClock.elapsedRealtime());
mChronometer.start();
try{
String myRecording="Seekika-" + System.currentTimeMillis();
Log.i(TAG, "Start Recording");
recorder.startRecording(myRecording);
}catch(IOException e){
Log.e(TAG,"IOException error");
e.printStackTrace();
}
}
private void stopRecording(){
mChronometer.stop();
try{
recorder.stop();
}catch(IOException e){
e.printStackTrace();
}
}
}