in my android app , i need to record audio for only 1 min? can any one help me to record audio for a certain amount of time? i ve written a code for recording audio and it will stop only when the stop button is pressed but i need to stop recording automatically after 1 min...
here my code .. but it doesnt work
try {
recorder.prepare();
recorder.start();
//Declare the timer
Timer t = new Timer();
//Set the schedule function and rate
t.scheduleAtFixedRate(new TimerTask() {
#Override
public void run() {
runOnUiThread(new Runnable() {
#Override
public void run() {
Toast.makeText(AudioRecordingActivity.this, "record successfullly ",
Toast.LENGTH_SHORT).show();
i1=i1+1;
}
});
//Called each time when 1000 milliseconds (1 second) (the period parameter)
}
},
//Set how long before to start calling the TimerTask (in milliseconds)
0,
//Set the amount of time between each execution (in milliseconds)
10*1000);
if (null != recorder) {
recorder.stop();
recorder.reset();
recorder.release();
recorder = null;
Toast.makeText(AudioRecordingActivity.this, "record successfullly",
Toast.LENGTH_SHORT).show();
}
} catch (IllegalStateException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
Try below code
recorder.start();
new Handler().postDelayed(new Runnable() {
#Override
public void run() {
recorder.stop();
}
}, 60000);
Try recorder.setMaxDuration(60*1000);
Or, if you need to do this repeatetly, use above answer, but add
if (null == recorder)
{
recorder = new MediaRecorder();
} else recorder.reset();
This approach more likely :)
Use below code.
recorder = new MediaRecorder();
recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
recorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
recorder.setOutputFile(getFilename());
recorder.setOnErrorListener(errorListener);
recorder.setOnInfoListener(infoListener);
try {
recorder.prepare();
recorder.start();
new Timer().schedule(new TimerTask() {
#Override
public void run() {
runOnUiThread(new Runnable() {
#Override
public void run() {
if (null != recorder) {
recorder.stop();
recorder.reset();
recorder.release();
recorder = null;
}
});
}
}, 60000);
}
} catch (IllegalStateException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
Related
I am using this code to record the current sound. I need now some processing to detect the beat from music. I want a LED go on/off according the incoming music. I think BeatDetect is an useful library for my project, however I cannot find a good example. Can anyone give me an easy example to use? Or a reference?
public void start() {
initializeMediaRecorder();
handler.postDelayed(new Runnable() {
#Override
public void run() {
notifySample(getAmplitude());
handler.postDelayed(this, 150);
}
}, 150);
}
public void stop() {
handler.removeCallbacksAndMessages(null);
if (mediaRecorder != null) {
mediaRecorder.stop();
mediaRecorder.reset();
mediaRecorder.release();
mediaRecorder = null;
}
}
private double getAmplitude() {
if (mediaRecorder != null) {
return mediaRecorder.getMaxAmplitude();
} else {
return 0;
}
}
private void initializeMediaRecorder(){
try {
if(mediaRecorder == null) {
mediaRecorder = new MediaRecorder();
mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
mediaRecorder.setOutputFile("/dev/null");
mediaRecorder.prepare();
mediaRecorder.start();
}
} catch (IOException e) {
e.printStackTrace();
}
}
My problem is really simple: I'm using a MediaRecorder to record voice while the user is pressing on a FAB, and playing it afterwards (when he/she releases). The issue is that I lose a few seconds near the end of the recording, and I can't figure out why (they never get played back). Code (only relevant parts are shown):
Variables
double record_length = 0;
boolean recording = false;
String outputFile;
Handler myHandler = new Handler();
MediaRecorder recorder = new MediaRecorder();
OnTouchListener
findViewById(R.id.record_record).setOnTouchListener(new View.OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN) {
findViewById(R.id.delete_swipe).setVisibility(View.VISIBLE);
StartRecord();
} else if (event.getAction() == MotionEvent.ACTION_UP) {
if(recording){
EndRecord();
}
findViewById(R.id.delete_swipe).setVisibility(View.INVISIBLE);
}
return true;
}
});
.
public void StartRecord() {
recording = true;
record_length = 0;
SharedPreferences saved_login = getSharedPreferences("FalloundLogin", 0);
recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
recorder.setAudioEncoder(MediaRecorder.OutputFormat.AMR_NB);
//removed construction of outputFile, but it is generated correctly - I checked
recorder.setOutputFile(outputFile);
try {
recorder.prepare();
recorder.start();
} catch (IOException e) {
e.printStackTrace();
}
myHandler.postDelayed(UpdateUploadLength, 200);
}
.
public void EndRecord() {
recording = false;
try {
recorder.stop();
recorder.reset();
recorder = null;
} catch (IllegalStateException e) {
e.printStackTrace();
}
MediaPlayer m = new MediaPlayer();
try {
m.setDataSource(outputFile);
} catch (IOException e) {
e.printStackTrace();
}
try {
m.prepare();
} catch (IOException e) {
e.printStackTrace();
}
m.start();
}
I need the recording to be a maximum of 27 seconds. To avoid complications, I tested without this extra termination condition and am including the Runnable just for completeness.
private Runnable UpdateUploadLength = new Runnable(){
#Override
public void run() {
if(recording == true) {
record_length += 0.2;
if (record_length < 27) {
myHandler.postDelayed(UpdateUploadLength, 200);
} else {
//TODO: stop recording
myHandler.removeCallbacks(UpdateUploadLength);
}
}
};
I've been trying for a few hours with no luck, so any help is appreciated (also - and I dunno if it's bad to ask multiple questions in the same post - but is there any way to get better audio quality from MediaRecorder?)
Thanks in advance.
Its answear for your second question. Yes you can have much better quality. There is more encoding types, file formats and parameters in library. Example:
mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AAC);
mediaRecorder.setAudioSamplingRate(44100);
mediaRecorder.setAudioEncodingBitRate(256000);
this code will set your recorder to m4a files with AAC, 44,1kHz sampling rate and around 256kbps
I am making an app where i can record something and then play it back but when i try to record again my APP crashes.
In the logs I get
01-18 16:51:39.368 27426-27426/com.example.se414011.musicapp1
W/MediaRecorder﹕ mediarecorder went away with unhandled events 01-18
16:51:42.598 27426-27426/com.example.se414011.musicapp1 A/libc﹕ Fatal
signal 11 (SIGSEGV) at 0x00000010 (code=1), thread 27426
(14011.musicapp1)
Any help would be great thanks!
This is my code
public void start(View view) {
try {
myRecorder.prepare();
myRecorder.start();
} catch (IllegalStateException e) {
// start:it is called before prepare()
// prepare: it is called after start() or before setOutputFormat()
e.printStackTrace();
} catch (IOException e) {
// prepare() fails
e.printStackTrace();
}
text.setText("Recording Status: Recording");
stopBtn.setEnabled(true);
startBtn.setEnabled(false);
Toast.makeText(getApplicationContext(), "Start recording...",
Toast.LENGTH_SHORT).show();
}
public void stop(View view) {
try {
myRecorder.stop();
myRecorder.release();
text.setText("Recording Status: Stop recording");
stopBtn.setEnabled(false);
startBtn.setEnabled(true);
Toast.makeText(getApplicationContext(), "Stop recording...",
Toast.LENGTH_SHORT).show();
} catch (IllegalStateException e) {
// it is called before start()
e.printStackTrace();
} catch (RuntimeException e) {
// no valid audio/video data has been received
e.printStackTrace();
}
}
public void play(View view) {
try {
myPlayer = new MediaPlayer();
myPlayer.setDataSource(outputFile);
myPlayer.prepare();
myPlayer.start();
text.setText("Recording Status: Playing");
Toast.makeText(getApplicationContext(), "Start play the recording...",
Toast.LENGTH_SHORT).show();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public void stopPlay(View view) {
try {
if (myPlayer != null) {
myPlayer.stop();
myPlayer.release();
myPlayer = null;
playBtn.setEnabled(true);
startBtn.setEnabled(true);
stopPlayBtn.setEnabled(false);
text.setText("Recording Status: Stop playing");
Toast.makeText(getApplicationContext(), "Stop playing the recording...",
Toast.LENGTH_SHORT).show();
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
As you can see in documentation, you can reuse your MediaRecorder only if you don't release it, snippet:
MediaRecorder recorder = new MediaRecorder();
recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
recorder.setOutputFile(PATH_NAME);
recorder.prepare();
recorder.start(); // Recording is now started
...
recorder.stop();
recorder.reset(); // You can reuse the object by going back to setAudioSource() step
recorder.release(); // Now the object cannot be reused
You didn't post where you set your object myRecorder, and if you create a new one when you want to record again, but if you're reusing the same object after calling release() you'll be in problems, my suggestions are don't release it until you're finished or create a new MediaRecorder for each record.
boolean stopped = false;
public void start(View view) {
//your code...
stopped = false;
}
public void stop(View view) {
try {
myRecorder.stop();
//myRecorder.release();
stopped = true;
//your code
}
}
public void onDestroy(){
if(stopped)
myRecorder.release();
}
I've got this working code. I need it to record only for a limited time without any click from the user. How do I do this?
MediaRecorder recorder = new MediaRecorder();
File outputFile = new File(file);
recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
recorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
recorder.setOutputFile(outputFile.getAbsolutePath());
try {
recorder.prepare();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
recorder.start();
recorder.setMaxDuration(60000);
// stop
recorder.stop();
recorder.reset();
recorder.release();
this will done well:(use the setMaxDuration before prepare/start function )
recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
recorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
recorder.setOutputFile(outputFile.getAbsolutePath());
recorder.setMaxDuration(60000);
recorder.prepare();
recorder.start();
Use setMaxDuration and setOnInfoListener to get a callback for notifing the UI.
recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
recorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
recorder.setOutputFile(outputFile.getAbsolutePath());
recorder.setMaxDuration(60000);
recorder.prepare();
recorder.setOnInfoListener(new MediaRecorder.OnInfoListener() {
#Override
public void onInfo(MediaRecorder mr, int what, int extra) {
if(what == MediaRecorder.MEDIA_RECORDER_INFO_MAX_DURATION_REACHED){
Toast.makeText(context, "Recording stops. Limit reached", Toast.LENGTH_LONG).show();
}
}
});
recorder.start();
You should put your recorder.stop(), etc. calls in a timer
Here is a link to instructions on how to use a timer task http://developer.android.com/resources/articles/timed-ui-updates.html
Timer timer = new Timer();
timer.schedule(new FinishRecordingTask(), 100, 200);
just add this after you have called recorder.start()
This might be little a nasty approach. But this is what I did,
once you start your mediaPlayer with mediaplayer.start(), start a Thread parallel to it like this,
thread passMusic=new Thread(new Runnable() {
public void run() {
try {
Thread.sleep(60000);
mediaplayer.pause();
mediaplayer.stop();
mediaplayer.release();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});passMusic.start();
And now you can use handlers to update your UI or something.
How to implement sound waves during recording sound in android??
in the below code
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
resultView = (TextView) findViewById(R.id.output);
try {
// the soundfile
File storageDir = new File(Environment
.getExternalStorageDirectory(), "com.hascode.recorders");
storageDir.mkdir();
Log.d(APP_TAG, "Storage directory set to " + storageDir);
outfile = File.createTempFile("hascode", ".3gp", storageDir);
// init recorder
recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
recorder.setOutputFile(outfile.getAbsolutePath());
// init player
player.setDataSource(outfile.getAbsolutePath());
} catch (IOException e) {
Log.w(APP_TAG, "File not accessible ", e);
} catch (IllegalArgumentException e) {
Log.w(APP_TAG, "Illegal argument ", e);
} catch (IllegalStateException e) {
Log.w(APP_TAG, "Illegal state, call reset/restore", e);
}
btRecord = (Button) findViewById(R.id.btRecord);
btRecord.setOnClickListener(handleRecordClick);
btPlay = (Button) findViewById(R.id.btPlay);
btPlay.setOnClickListener(handlePlayClick);
}
private final OnClickListener handleRecordClick = new OnClickListener() {
#Override
public void onClick(View view) {
if (!recording) {
startRecord();
} else {
stopRecord();
}
}
};
private final OnClickListener handlePlayClick = new OnClickListener() {
#Override
public void onClick(View view) {
if (!playing) {
startPlay();
} else {
stopPlay();
}
}
};
private void startRecord() {
Log.d(APP_TAG, "start recording..");
printResult("start recording..");
try {
recorder.prepare();
recorder.start();
recording = true;
} catch (IllegalStateException e) {
Log
.w(APP_TAG,
"Invalid recorder state .. reset/release should have been called");
} catch (IOException e) {
Log.w(APP_TAG, "Could not write to sd card");
}
}
private void stopRecord() {
Log.d(APP_TAG, "stop recording..");
printResult("stop recording..");
recorder.stop();
recorder.reset();
recorder.release();
recording = false;
}
private void startPlay() {
Log.d(APP_TAG, "starting playback..");
printResult("start playing..");
try {
playing = true;
player.prepare();
player.start();
} catch (IllegalStateException e) {
Log.w(APP_TAG, "illegal state .. player should be reset");
} catch (IOException e) {
Log.w(APP_TAG, "Could not write to sd card");
}
}
private void stopPlay() {
Log.d(APP_TAG, "stopping playback..");
printResult("stop playing..");
player.stop();
player.reset();
player.release();
playing = false;
}
private void printResult(String result) {
resultView.setText(result);
}
Do you want to merge your recorded sound with a pre-recorded sound of waves?
If so, maybe you could try to create two sound objects of the different sources. Then you maybe could write to the output file in intervals. One interval for the pre-recorded and one for the fresh one.
I actually don't know if that's even a valid way to do this. Just what my general approach would've been facing this problem.