android - scanner - java.io.IOException:[JSR82] accept: La conexión no se crea(falla o cancela)

modulo bluetooth en android studio

Question

Quiero crear BluetoothServerSocket en Samsung GALAXY TAB 8.9. (Android 4.04) Cuando invocas mmServerSocket.accept () - throwed:

"java.io.IOException: [JSR82] accept: La conexión no se crea (falla o cancela)."

Leí muchos artículos similares pero no tengo una respuesta detallada. Tal vez alguien resolvió un problema similar o sabe a qué se refiere esta Excepción.

Gracias.

Código obtenido del ejemplo de Android "ChatExample":

 public class AcceptThread extends Thread {
// The local server socket
private final BluetoothServerSocket mmServerSocket;
private String mSocketType;
public AcceptThread(boolean secure) { BluetoothServerSocket tmp = null;
mSocketType = secure ? "Secure" : "Insecure";
try {
tmp = mAdapter.listenUsingInsecureRfcommWithServiceRecord(
NAME_INSECURE, MY_UUID_INSECURE);
} catch (IOException e) {
Log.e(TAG, "Socket Type: " + mSocketType + "listen() failed", e);
}
mmServerSocket = tmp;
}
public void run() {
if (D) Log.d(TAG, "Socket Type: " + mSocketType +
"BEGIN mAcceptThread" + this);
setName("AcceptThread" + mSocketType);
BluetoothSocket socket = null;
// Listen to the server socket if we''re not connected
while (mState != STATE_CONNECTED) {
try {
// This is a blocking call and will only return on a
// successful connection or an exception
Log.d(TAG, "Socket " + socket + " | ServerSocket " + mmServerSocket);
socket = mmServerSocket.accept();
Log.d(TAG, "new accepted Socket with " + socket.getRemoteDevice().getName());
} catch (IOException e) {
Log.e(TAG, "Socket Type: " + mSocketType + "accept() failed", e);
// BluetoothServiceViaProtobuf.this.start();
break;
}
// If a connection was accepted
if (socket != null) {
synchronized (BluetoothServiceViaProtobuf.this) {
switch (mState) {
case STATE_LISTENING:
case STATE_CONNECTING:
// Situation normal. Start the connected thread.
connected(socket, socket.getRemoteDevice(),
mSocketType);
break;
case STATE_NONE:
case STATE_CONNECTED:
// Either not ready or already connected. Terminate new socket.
try {
socket.close();
} catch (IOException e) {
Log.e(TAG, "Could not close unwanted socket", e);
}
break;
}
}
}
}
if (D) Log.i(TAG, "END mAcceptThread, socket Type: " + mSocketType + " "+ BluetoothServiceViaProtobuf.this.getState());
}
public void cancel() {
if (D) Log.d(TAG, "Socket Type" + mSocketType + "stop " + this );
try {
mmServerSocket.close();
} catch (IOException e) {
Log.e(TAG, "Socket Type" + mSocketType + "close() of server failed", e);
}
}
}