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I had this error on my VoiSip Application
E/AudioRecord: AudioFlinger could not create record track, status: -1
E/AudioGroup: cannot initialize audio device
This error occurs after I'm trying to make call to another sip address
Here have 2 java class(WalkieTalkieActivity.java & IncomingCallReceiver.java)
WalkieTalkieActivity.java
public class WalkieTalkieActivity extends Activity implements View.OnTouchListener {
public IncomingCallReceiver callReceiver;
public SipManager mSipManager = null;
public SipProfile mSipProfile = null;
public SipAudioCall call = null;
TextView tv;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_walkie_talkie);
ToggleButton pushToTalkButton = (ToggleButton) findViewById(R.id.pushToTalk);
pushToTalkButton.setOnTouchListener(this);
IntentFilter filter = new IntentFilter();
filter.addAction("android.SipDemo.INCOMING_CALL");
callReceiver = new IncomingCallReceiver();
this.registerReceiver(callReceiver, filter);
if (mSipManager == null) {
mSipManager = SipManager.newInstance(this);
tv = (TextView)findViewById(R.id.textView);
@Override
public void onStart() {
super.onStart();
// When we get back from the preference setting Activity, assume
// settings have changed, and re-login with new auth info.
initializeManager();
@Override
public void onDestroy() {
super.onDestroy();
if (call != null) {
call.close();
closeLocalProfile();
if (callReceiver != null) {
this.unregisterReceiver(callReceiver);
public void closeLocalProfile() {
if (mSipManager == null) {
return;
try {
if (mSipProfile != null) {
mSipManager.close(mSipProfile.getUriString());
} catch (Exception ee) {
Log.d("onDestroy", "Failed to close local profile.", ee);
public void initializeManager() {
if(mSipManager == null) {
mSipManager = SipManager.newInstance(this);
initializeLocalProfile();
private void initializeLocalProfile() {
String domain = "mydomain";
String username = "myusername";
String password = "mypassword";
try {
SipProfile.Builder builder = new SipProfile.Builder(username, domain);
builder.setPassword(password);
mSipProfile = builder.build();
if (mSipProfile == null){
Log.e("error cukimai", "null");
}else{
Log.e("error cukimai", "not null");
Intent i = new Intent();
i.setAction("android.SipDemo.INCOMING_CALL");
PendingIntent pi = PendingIntent.getBroadcast(this, 0, i, Intent.FILL_IN_DATA);
mSipManager.open(mSipProfile, pi, null);
mSipManager.setRegistrationListener(mSipProfile.getUriString(), new SipRegistrationListener() {
public void onRegistering(String localProfileUri) {
updateStatus("Registering with SIP Server...");
Log.e("process","Registering with SIP Server...");
public void onRegistrationDone(String localProfileUri, long expiryTime) {
updateStatus("Ready");
Log.e("process","ready");
public void onRegistrationFailed(String localProfileUri, int errorCode,
String errorMessage) {
updateStatus("Registration failed. Please check settings.");
Log.e("process","Registration failed. Please check settings.");
Log.e("process","stop");
} catch (SipException e) {
e.printStackTrace();
Log.e("error cukimai", "cuk cuk");
} catch (ParseException e) {
e.printStackTrace();
Log.e("error cukimai", "cuk");
public void updateStatus(final String st){
this.runOnUiThread(new Runnable() {
public void run() {
tv.setText(st);
public void updateStatus(SipAudioCall call) {
String useName = call.getPeerProfile().getDisplayName();
if(useName == null) {
useName = call.getPeerProfile().getUserName();
updateStatus(useName + "@" + call.getPeerProfile().getSipDomain());
public void callAct(View view) {
Toast.makeText(this, "about to make call", Toast.LENGTH_LONG).show();
makeCall();
public void makeCall(){
try {
SipAudioCall.Listener listener = new SipAudioCall.Listener() {
// Much of the client's interaction with the SIP Stack will
// happen via listeners. Even making an outgoing call, don't
// forget to set up a listener to set things up once the call is established.
@Override
public void onCallEstablished(SipAudioCall call) {
call.startAudio();
call.setSpeakerMode(true);
call.toggleMute();
updateStatus(call);
@Override
public void onCallEnded(SipAudioCall call) {
updateStatus("Ready.");
call = mSipManager.makeAudioCall(mSipProfile.getUriString(), "sip:destination@domain", listener, 30);
Log.e("make call", "true");
start();
}catch (Exception e){
Log.i("error", "Error when trying to close manager.", e);
if (mSipProfile != null) {
try {
mSipManager.close(mSipProfile.getUriString());
} catch (Exception ee) {
Log.i("error", "Error when trying to close manager.", ee);
ee.printStackTrace();
if (call != null) {
call.close();
@Override
public boolean onTouch(View view, MotionEvent event) {
if (call == null) {
return false;
} else if (event.getAction() == MotionEvent.ACTION_DOWN && call != null && call.isMuted()) {
call.toggleMute();
} else if (event.getAction() == MotionEvent.ACTION_UP && !call.isMuted()) {
call.toggleMute();
return false;
final MediaRecorder recorder = new MediaRecorder();
final String path;
* Creates a new audio recording at the given path (relative to root of SD card).
public WalkieTalkieActivity(String path) {
this.path = sanitizePath(path);
private String sanitizePath(String path) {
if (!path.startsWith("/")) {
path = "/" + path;
if (!path.contains(".")) {
path += ".3gp";
return Environment.getExternalStorageDirectory().getAbsolutePath() + path;
* Starts a new recording.
public void start() 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.");
recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
recorder.setOutputFile(path);
recorder.prepare();
recorder.start();
* Stops a recording that has been previously started.
public void stop() throws IOException {
recorder.stop();
recorder.release();
IncomingCallReceiver.java
public class IncomingCallReceiver extends BroadcastReceiver {
* Processes the incoming call, answers it, and hands it over to the
* WalkieTalkieActivity.
* @param context The context under which the receiver is running.
* @param intent The intent being received.
@Override
public void onReceive(Context context, Intent intent) {
SipAudioCall incomingCall = null;
try {
SipAudioCall.Listener listener = new SipAudioCall.Listener() {
@Override
public void onRinging(SipAudioCall call, SipProfile caller) {
try {
call.answerCall(30);
} catch (Exception e) {
e.printStackTrace();
WalkieTalkieActivity wtActivity = (WalkieTalkieActivity) context;
incomingCall = wtActivity.mSipManager.takeAudioCall(intent, listener);
incomingCall.answerCall(30);
incomingCall.startAudio();
incomingCall.setSpeakerMode(true);
if(incomingCall.isMuted()) {
incomingCall.toggleMute();
wtActivity.call = incomingCall;
wtActivity.updateStatus(incomingCall);
} catch (Exception e) {
if (incomingCall != null) {
incomingCall.close();
I'm really new on Sip and Voip Implementing in Android Studio. I got this code from google source code.
I believe this error occurs because of the use of hardware (audio). However I have been searching on google for almost 1 week and not giving results. Can someone help me?
You must choose the BufferSize when you want to record or call in app. For example:
int bufferSize = AudioRecord.getMinBufferSize(rate, channelConfig, audioFormat);
if (bufferSize > 0 && bufferSize <= 256){
bufferSize = 256;
}else if (bufferSize > 256 && bufferSize <= 512){
bufferSize = 512;
}else if (bufferSize > 512 && bufferSize <= 1024){
bufferSize = 1024;
}else if (bufferSize > 1024 && bufferSize <= 2048){
bufferSize = 2048;
}else if (bufferSize > 2048 && bufferSize <= 4096){
bufferSize = 4096;
}else if (bufferSize > 4096 && bufferSize <= 8192){
bufferSize = 8192;
}else if (bufferSize > 8192 && bufferSize <= 16384){
bufferSize = 16384;
}else{
bufferSize = AudioRecord.getMinBufferSize(rate, channelConfig, audioFormat);
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