Hi all,
I use a hardware bluetooth device and I need to connect it to my mobile
phone. I've follow the instruction on developer.android.com to set up a
bluetooth connection but I still have a problem. When I'm connecting to the
Bluetooth Socket with bluetoothSocket.connect() I don't catch any exception
so according to the docs, that mean I'm connected to my device. The problem
is I'm not... Here is my code :
private class AcceptThread extends Thread {
// The local server socket
private final BluetoothServerSocket mmServerSocket;
public AcceptThread() {
BluetoothServerSocket tmp = null;
// Create a new listening server socket
try {
tmp = mAdapter
.listenUsingRfcommWithServiceRecord(NAME, MY_UUID);
} catch (IOException e) {
Log.e(TAG, "listen() failed", e);
}
mmServerSocket = tmp;
}
public void run() {
if (D)
Log.d(TAG, "BEGIN mAcceptThread" + this);
setName("AcceptThread");
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
socket = mmServerSocket.accept();
} catch (IOException e) {
Log.e(TAG, "accept() failed", e);
break;
}
// If a connection was accepted
if (socket != null) {
synchronized (BluetoothConnectionService.this) {
switch (mState) {
case STATE_LISTEN:
case STATE_CONNECTING:
// Situation normal. Start the connected thread.
connected(socket, socket.getRemoteDevice());
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");
}
public void cancel() {
if (D)
Log.d(TAG, "cancel " + this);
try {
if (mmServerSocket != null)
mmServerSocket.close();
} catch (Exception e) {
Log.e(TAG, "close() of server failed", e);
}
}
}
/**
* This thread runs while attempting to make an outgoing connection with
a
* device. It runs straight through; the connection either succeeds or
* fails.
*/
private class ConnectThread extends Thread {
private final BluetoothSocket mmSocket;
private final BluetoothDevice mmDevice;
public ConnectThread(BluetoothDevice device) {
mmDevice = device;
BluetoothSocket connection = null;
// Get a BluetoothSocket for a connection with the
// given BluetoothDevice
try {
// device.createRfcommSocketToServiceRecord(MY_UUID);
Method m = device.getClass().getMethod("createRfcommSocket",
new Class[] { int.class });
connection = (BluetoothSocket) m.invoke(device, 1);
Utils.pause(100);
} catch (Exception e) {
Log.e(TAG, "create() failed", e);
}
mmSocket = connection;
}
public void run() {
Log.i(TAG, "BEGIN mConnectThread");
setName("ConnectThread");
if (mmSocket != null) {
// Always cancel discovery because it will slow down a
// connection
mAdapter.cancelDiscovery();
// Make a connection to the BluetoothSocket
try {
// This is a blocking call and will only return on a
// successful connection or an exception
mmSocket.connect();
} catch (Exception e1) {
Log.e(TAG, "connect failed", e1);
connectionFailed();
// Close the socket
try {
mmSocket.close();
} catch (IOException e2) {
Log.e(TAG,
"unable to close() socket during connection
failure",
e2);
}
// Start the service over to restart listening mode
BluetoothConnectionService.this.start();
return;
}
// Reset the ConnectThread because we're done
synchronized (BluetoothConnectionService.this) {
mConnectThread = null;
}
// Start the connected thread
connected(mmSocket, mmDevice);
} else {
connectionFailed();
BluetoothConnectionService.this.start();
}
}
public void cancel() {
try {
if (mmSocket != null) {
mmSocket.close();
}
} catch (IOException e) {
Log.e(TAG, "close() of connect socket failed", e);
}
}
}
/**
* This thread runs during a connection with a remote device. It handles
all
* incoming and outgoing transmissions.
*/
private class ConnectedThread extends Thread {
private final BluetoothSocket mmSocket;
private final DataInputStream mmInStream;
private final OutputStream mmOutStream;
public ConnectedThread(BluetoothSocket socket) {
Log.d(TAG, "create ConnectedThread");
mmSocket = socket;
InputStream tmpIn = null;
OutputStream tmpOut = null;
// Get the BluetoothSocket input and output streams
try {
tmpIn = socket.getInputStream();
tmpOut = socket.getOutputStream();
isConnected = true;
} catch (IOException e) {
Log.e(TAG, "temp sockets not created", e);
isConnected = false;
}
mmInStream = new DataInputStream(tmpIn);
mmOutStream = tmpOut;
}
public void run() {
Log.i(TAG, "BEGIN mConnectedThread");
while (isConnected) {
Utils.pause(5);
isConnected = checkConnection();
}
}
/**
* Check if the connection is still alive
*
* @return true or false
*/
private boolean checkConnection() {
synchronized (mmInStream) {
try {
int len = mmInStream.available();
if (len > 0) {// Checks the available amount
byte b[] = new byte[len];
mmInStream.readFully(b, 0, len);
mHandler.obtainMessage(MESSAGE_READ, len, -1, b)
.sendToTarget();
}
return true;
} catch (IOException ioe) {
Log.e(TAG, "disconnected", ioe);
connectionLost();
return false; // Connection is lost.
}
}
}
Thank you for your help !
Best regards
SECU4 SA
Laurent Lugon Moulin
Technical & Development Assistant
Technopôle 5
3960 Sierre – Switzerland
Office : +4127 4567 931
Fax : +4127 4567
935
Skype : laurent.lugon.moulin
www.secu4.com
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