I want to record voice as long as holding the record button and save that voice into the raw folder in my project. I used the code below. Altough there appears no errors, i couldn't get any output. What can be the problem ? Do you have any suggestions? Thanks,
public boolean onTouch(View v, MotionEvent event) {
// TODO Auto-generated method stub
Runnable mAction = new Runnable() {
public void run() {
System.out.println("Performing action...");
int frequency=11025;
int channelConfiguration=AudioFormat.CHANNEL_CONFIGURATION_MONO;
int audioEncoding= AudioFormat.ENCODING_PCM_16BIT;
File file=new File(Environment.getExternalStorageDirectory(),"raw.pcm");
try{
file.createNewFile();
}catch(IOException e){}
try{
OutputStream os=new FileOutputStream(file);
BufferedOutputStream bos=new BufferedOutputStream(os);
DataOutputStream dos=new DataOutputStream(bos);
int bufferSize=AudioRecord.getMinBufferSize(frequency, channelConfiguration,
audioEncoding);
short[] buffer=new short[bufferSize];
audioRecorder=new AudioRecord(MediaRecorder.AudioSource.MIC,
frequency, channelConfiguration, audioEncoding, bufferSize);
audioRecorder.startRecording();
isRecording=true;
while(isRecording){
int bufferReadResult=audioRecorder.read(buffer, 0,bufferSize);
for(int i=0;i<bufferReadResult;i++){
dos.writeShort(buffer[i]);
}
}
audioRecorder.stop();
dos.close();
}catch(Throwable t){}
}
};
switch(event.getAction()) {
case MotionEvent.ACTION_DOWN:
if (myHandler != null) return true;
myHandler = new Handler();
myHandler.postDelayed(mAction, 500);
break;
case MotionEvent.ACTION_UP:
if (myHandler == null) return true;
isRecording=false;
myHandler.removeCallbacks(mAction);
myHandler = null;
break;
}
return false;
}
here is your answer...
import java.io.File;
import java.io.IOException;
import android.app.Activity;
import android.media.MediaRecorder;
import android.os.Bundle;
import android.os.Environment;
import android.view.MotionEvent;
import android.view.View;
import android.widget.Button;
public class AudioOnTouchActivity extends Activity {
Button b1;
private static final String AUDIO_RECORDER_FILE_EXT_3GP = ".3gp";
private static final String AUDIO_RECORDER_FILE_EXT_MP4 = ".mp4";
private static final String AUDIO_RECORDER_FOLDER = "AudioRecorder";
private MediaRecorder recorder = null;
private int currentFormat = 0;
private int output_formats[] = { MediaRecorder.OutputFormat.MPEG_4, MediaRecorder.OutputFormat.THREE_GPP };
private String file_exts[] = { AUDIO_RECORDER_FILE_EXT_MP4, AUDIO_RECORDER_FILE_EXT_3GP };
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
b1=(Button)findViewById(R.id.button1);
b1.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
// TODO Auto-generated method stub
switch(event.getAction()){
case MotionEvent.ACTION_DOWN:
AppLog.logString("Start Recording");
startRecording();
return true;
case MotionEvent.ACTION_UP:
AppLog.logString("stop Recording");
stopRecording();
break;
}
return false;
}
});
}
private String getFilename(){
String filepath = Environment.getExternalStorageDirectory().getPath();
File file = new File(filepath,AUDIO_RECORDER_FOLDER);
if(!file.exists()){
file.mkdirs();
}
return (file.getAbsolutePath() + "/" + System.currentTimeMillis() + file_exts[currentFormat]);
}
private void startRecording(){
recorder = new MediaRecorder();
recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
recorder.setOutputFormat(output_formats[currentFormat]);
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
recorder.setOutputFile(getFilename());
recorder.setOnErrorListener(errorListener);
recorder.setOnInfoListener(infoListener);
try {
recorder.prepare();
recorder.start();
} catch (IllegalStateException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
private MediaRecorder.OnErrorListener errorListener = new MediaRecorder.OnErrorListener() {
@Override
public void onError(MediaRecorder mr, int what, int extra) {
AppLog.logString("Error: " + what + ", " + extra);
}
};
private MediaRecorder.OnInfoListener infoListener = new MediaRecorder.OnInfoListener() {
@Override
public void onInfo(MediaRecorder mr, int what, int extra) {
AppLog.logString("Warning: " + what + ", " + extra);
}
};
private void stopRecording(){
if(null != recorder){
recorder.stop();
recorder.reset();
recorder.release();
recorder = null;
}
}
}
AppLog.java file is
import android.util.Log;
public class AppLog {
private static final String APP_TAG = "AudioRecorder";
public static int logString(String message){
return Log.i(APP_TAG,message);
}
the xml is
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello" />
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Button"
android:layout_gravity="center"
android:layout_marginTop="10dp"/>
</LinearLayout>
Add these permission to your manifest file
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses-permission>
<uses-permission android:name="android.permission.RECORD_AUDIO"></uses-permission>