i am writing an application that send voice from one android device to another but when i click the button to send the application force to close i am using code similar to Streaming voice between Android Phones over WiFi and i will post the code below
the sender:
public class MainActivity extends ActionBarActivity {
private EditText target;
private TextView streamingLabel;
private Button startButton,stopButton;
public byte[] buffer;
public static DatagramSocket socket;
private int port=50005; //which port??
AudioRecord recorder;
//Audio Configuration.
private int sampleRate = 16000; //How much will be ideal?
private int channelConfig = AudioFormat.CHANNEL_CONFIGURATION_MONO;
private int audioFormat = AudioFormat.ENCODING_PCM_16BIT;
int minBufsize=4096;
private boolean status = true;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
target = (EditText) findViewById (R.id.target_IP);
streamingLabel = (TextView) findViewById(R.id.streaming_label);
startButton = (Button) findViewById (R.id.start);
stopButton = (Button) findViewById (R.id.stop);
stopButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
status = false;
recorder.release();
Log.d("VS","Recorder released");
}
});
startButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
status = true;
startStreaming();
}
});
}
public void startStreaming() {
Thread streamThread = new Thread(new Runnable() {
@Override
public void run() {
try {
int minBufSize = 4096;//AudioRecord.getMinBufferSize(sampleRate, channelConfig, audioFormat);
DatagramSocket socket = new DatagramSocket();
Log.d("VS", "Socket Created");
byte[] buffer = new byte[minBufSize];
Log.d("VS","Buffer created of size " + minBufSize);
DatagramPacket packet;
final InetAddress destination = InetAddress.getByName(target.getText().toString());
Log.d("VS", "Address retrieved");
recorder = new AudioRecord(MediaRecorder.AudioSource.MIC,sampleRate,channelConfig,audioFormat,minBufSize);
Log.d("VS", "Recorder initialized");
recorder.startRecording();
while(status == true) {
//reading data from MIC into buffer
minBufSize = recorder.read(buffer, 0, buffer.length);
//putting buffer in the packet
packet = new DatagramPacket (buffer,buffer.length,destination,port);
socket.send(packet);
}
} catch(UnknownHostException e) {
Log.e("VS", "UnknownHostException");
} catch (IOException e) {
Log.e("VS", "IOException");
}
}
});
streamThread.start();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
the reciever:
public class MainActivity extends ActionBarActivity {
private Button receiveButton,stopButton;
public static DatagramSocket socket;
private AudioTrack speaker;
//Audio Configuration.
private int sampleRate = 16000; //How much will be ideal?
private int channelConfig = AudioFormat.CHANNEL_CONFIGURATION_MONO;
private int audioFormat = AudioFormat.ENCODING_PCM_16BIT;
private boolean status = true;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
receiveButton = (Button) findViewById (R.id.recieve);
stopButton = (Button) findViewById (R.id.stop);
stopButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
status = false;
speaker.release();
Log.d("VR","Speaker released");
}
});
receiveButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
status = true;
startReceiving();
}
});
}
public void startReceiving() {
Thread receiveThread = new Thread (new Runnable() {
@Override
public void run() {
try {
DatagramSocket socket = new DatagramSocket(50005);
Log.d("VR", "Socket Created");
byte[] buffer = new byte[256];
//minimum buffer size. need to be careful. might cause problems. try setting manually if any problems faced
int minBufSize = AudioRecord.getMinBufferSize(sampleRate, channelConfig, audioFormat);
speaker = new AudioTrack(AudioManager.STREAM_MUSIC,sampleRate,channelConfig,audioFormat,minBufSize,AudioTrack.MODE_STREAM);
speaker.play();
while(status == true) {
try {
DatagramPacket packet = new DatagramPacket(buffer,buffer.length);
socket.receive(packet);
Log.d("VR", "Packet Received");
//reading content from packet
buffer=packet.getData();
Log.d("VR", "Packet data read into buffer");
//sending data to the Audiotrack obj i.e. speaker
speaker.write(buffer, 0, minBufSize);
Log.d("VR", "Writing buffer content to speaker");
} catch(IOException e) {
Log.e("VR","IOException");
}
}
} catch (SocketException e) {
Log.e("VR", "SocketException");
}
}
});
receiveThread.start();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
and here is the Logcat
12-09 09:13:37.829: E/Trace(609): error opening trace file: No such file or directory (2) 12-09 09:13:38.890: I/Choreographer(609): Skipped 46 frames! The application may be doing too much work on its main thread. 12-09 09:13:38.900: D/gralloc_goldfish(609): Emulator without GPU emulation detected. 12-09 09:13:39.070: I/Choreographer(609): Skipped 59 frames! The application may be doing too much work on its main thread. 12-09 09:13:57.070: D/VS(609): Socket Created 12-09 09:13:57.101: D/VS(609): Buffer created of size 4096 12-09 09:13:57.101: D/VS(609): Address retrieved 12-09 09:13:57.130: E/AudioRecord(609): Unsupported configuration: sampleRate 16000, format 1, channelCount 1 12-09 09:13:57.130: E/AudioRecord-JNI(609): Error creating AudioRecord instance: initialization check failed. 12-09 09:13:57.140: E/AudioRecord-Java(609): [ android.media.AudioRecord ] Error code -20 when initializing native AudioRecord object. 12-09 09:13:57.140: D/VS(609): Recorder initialized 12-09 09:13:57.180: W/dalvikvm(609): threadid=11: thread exiting with uncaught exception (group=0x40a13300) 12-09 09:13:57.180: E/AndroidRuntime(609): FATAL EXCEPTION: Thread-69 12-09 09:13:57.180: E/AndroidRuntime(609): java.lang.IllegalStateException: startRecording() called on an uninitialized AudioRecord. 12-09 09:13:57.180: E/AndroidRuntime(609): at android.media.AudioRecord.startRecording(AudioRecord.java:515) 12-09 09:13:57.180: E/AndroidRuntime(609): at com.example.voicesenderactivity.MainActivity$3.run(MainActivity.java:91) 12-09 09:13:57.180: E/AndroidRuntime(609): at java.lang.Thread.run(Thread.java:856) 12-09 09:13:57.400: D/dalvikvm(609): GC_CONCURRENT freed 191K, 5% free 6239K/6535K, paused 15ms+4ms, total 248ms 12-09 09:13:57.590: W/IInputConnectionWrapper(609): showStatusIcon on inactive InputConnection 12-09 09:13:58.300: I/Choreographer(609): Skipped 53 frames! The application may be doing too much work on its main thread.
