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나는 다음과 같은 메시지가, 단지 내 삼성 갤럭시 S7에 수신 블루투스 연결을 시도 0 : 내 넥서스 5 배에 동일한 코드를 사용블루투스 문제 : myUserId =
I/BT: Attempting to connect to Protocol: 00001105-0000-1000-8000-00805f9b34fb
D/BluetoothAdapter: cancelDiscovery
D/BluetoothUtils: isSocketAllowedBySecurityPolicy start : device null
D/BluetoothSocket: connect(): myUserId = 0
W/BluetoothAdapter: getBluetoothService() called with no BluetoothManagerCallback
D/BluetoothSocket: getInputStream(): myUserId = 0
D/BluetoothSocket: getOutputStream(): myUserId = 0
저를 보내지 않습니다 "myUserId = 0".
"문제"는 내 앱과 다른 기기 간의 통신을 차단하는 것 같습니다.
private class btSend extends AsyncTask<Void, Void, Void>{
@Override
protected void onPreExecute(){
Log.i("BT Connection", "Establishing connection...");
}
@Override
protected Void doInBackground(Void... devices) {
List<UUID> list = new ArrayList<>();
for (ParcelUuid id : bluetoothDevice.getUuids()) {
list.add(id.getUuid());
}
BluetoothSocketConnector bluetoothSocketConnector = new BluetoothSocketConnector(bluetoothDevice, false, bluetoothAdapter, list);
try {
bluetoothSocket = bluetoothSocketConnector.connect();
inputStream = bluetoothSocket.getInputStream();
outputStream = bluetoothSocket.getOutputStream();
btConnectSuccess = true;
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(Void result){
super.onPostExecute(result);
if(btConnectSuccess) {
while(true){
try {
sleep(5000);
sendData();
} catch (IOException e) {
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
}
같이 sendData :
void sendData() throws IOException
{
String msg = "Test message\r\n";
if (msg!=null) {
byte[] msgBuffer = msg.getBytes();
try {
outputStream.write(msgBuffer);
Log.w("Bluetooth", "Data sent"+msgBuffer);
} catch (IOException e) {
Log.e("BT send error", e.getMessage(), e);
}
}
}
BluetoothSocketConnector :
여기 내 코드의
public class BluetoothSocketConnector {
private BluetoothSocketWrapper bluetoothSocket;
private BluetoothDevice device;
private boolean secure;
private BluetoothAdapter adapter;
private List<UUID> uuidCandidates;
private int candidate;
/**
* @param device the device
* @param secure if connection should be done via a secure socket
* @param adapter the Android BT adapter
* @param uuidCandidates a list of UUIDs. if null or empty, the Serial PP id is used
*/
public BluetoothSocketConnector(BluetoothDevice device, boolean secure, BluetoothAdapter adapter,
List<UUID> uuidCandidates) {
this.device = device;
this.secure = secure;
this.adapter = adapter;
this.uuidCandidates = uuidCandidates;
if (this.uuidCandidates == null || this.uuidCandidates.isEmpty()) {
this.uuidCandidates = new ArrayList<UUID>();
this.uuidCandidates.add(UUID.fromString("00001101-0000-1000-8000-00805F9B34FB"));
}
}
public BluetoothSocketWrapper connect() throws IOException {
boolean success = false;
while (selectSocket()) {
adapter.cancelDiscovery();
try {
bluetoothSocket.connect();
success = true;
break;
} catch (IOException e) {
//try the fallback
try {
bluetoothSocket = new FallbackBluetoothSocket(bluetoothSocket.getUnderlyingSocket());
Thread.sleep(500);
bluetoothSocket.connect();
success = true;
break;
} catch (FallbackException e1) {
Log.w("BT", "Could not initialize FallbackBluetoothSocket classes.", e);
} catch (InterruptedException e1) {
Log.w("BT", e1.getMessage(), e1);
} catch (IOException e1) {
Log.w("BT", "Fallback failed. Cancelling.", e1);
}
}
}
if (!success) {
throw new IOException("Could not connect to device: "+ device.getAddress());
}
return bluetoothSocket;
}
private boolean selectSocket() throws IOException {
if (candidate >= uuidCandidates.size()) {
return false;
}
BluetoothSocket tmp;
UUID uuid = uuidCandidates.get(candidate++);
Log.i("BT", "Attempting to connect to Protocol: "+ uuid);
if (secure) {
tmp = device.createRfcommSocketToServiceRecord(uuid);
} else {
tmp = device.createInsecureRfcommSocketToServiceRecord(uuid);
}
bluetoothSocket = new NativeBluetoothSocket(tmp);
return true;
}
public static interface BluetoothSocketWrapper {
InputStream getInputStream() throws IOException;
OutputStream getOutputStream() throws IOException;
String getRemoteDeviceName();
void connect() throws IOException;
String getRemoteDeviceAddress();
void close() throws IOException;
BluetoothSocket getUnderlyingSocket();
}
public static class NativeBluetoothSocket implements BluetoothSocketWrapper {
private BluetoothSocket socket;
public NativeBluetoothSocket(BluetoothSocket tmp) {
this.socket = tmp;
}
@Override
public InputStream getInputStream() throws IOException {
return socket.getInputStream();
}
@Override
public OutputStream getOutputStream() throws IOException {
return socket.getOutputStream();
}
@Override
public String getRemoteDeviceName() {
return socket.getRemoteDevice().getName();
}
@Override
public void connect() throws IOException {
socket.connect();
}
@Override
public String getRemoteDeviceAddress() {
return socket.getRemoteDevice().getAddress();
}
@Override
public void close() throws IOException {
socket.close();
}
@Override
public BluetoothSocket getUnderlyingSocket() {
return socket;
}
}
public class FallbackBluetoothSocket extends NativeBluetoothSocket {
private BluetoothSocket fallbackSocket;
public FallbackBluetoothSocket(BluetoothSocket tmp) throws FallbackException {
super(tmp);
try
{
Class<?> clazz = tmp.getRemoteDevice().getClass();
Class<?>[] paramTypes = new Class<?>[] {Integer.TYPE};
Method m = clazz.getMethod("createRfcommSocket", paramTypes);
Object[] params = new Object[] {Integer.valueOf(1)};
fallbackSocket = (BluetoothSocket) m.invoke(tmp.getRemoteDevice(), params);
}
catch (Exception e)
{
throw new FallbackException(e);
}
}
@Override
public InputStream getInputStream() throws IOException {
return fallbackSocket.getInputStream();
}
@Override
public OutputStream getOutputStream() throws IOException {
return fallbackSocket.getOutputStream();
}
@Override
public void connect() throws IOException {
fallbackSocket.connect();
}
@Override
public void close() throws IOException {
fallbackSocket.close();
}
}
public static class FallbackException extends Exception {
/**
*
*/
private static final long serialVersionUID = 1L;
public FallbackException(Exception e) {
super(e);
}
}
}