Android 蓝牙服务器关闭

我想再次尝试在片段上创建

bluetooth

连接（因为如果我不再次创建getting return null对象，我想发送消息），我的问题是：处理片段时服务器套接字关闭

这是我的日志：

D/BluetoothConnectionServ: ConnectThread: Trying to create InsecureRfcommSocket using UUID: 00001101-0000-1000-8000-00805f9b34fb
W/BluetoothAdapter: getBluetoothService() called with no BluetoothManagerCallback
D/BluetoothConnectionServ: run: Closed Socket.
                           run: ConnectThread: Could not connect to UUID: 00001101-0000-1000-8000-00805f9b34fb
                           connected: Starting.
                           ConnectedThread: Starting.
E/BluetoothConnectionServ: write: Error reading Input Stream. socket closed
I/ViewRootImpl: ViewRoot's Touch Event : ACTION_DOWN
W/SplitWindow: update focus... 
I/Choreographer: Skipped 31 frames!  The application may be doing too much work on its main thread.
W/SplitWindow: update focus... 
I/ViewRootImpl: ViewRoot's Touch Event : ACTION_DOWN
I/ViewRootImpl: ViewRoot's Touch Event : ACTION_UP
I/ViewRootImpl: ViewRoot's Touch Event : ACTION_DOWN
I/ViewRootImpl: ViewRoot's Touch Event : ACTION_UP
D/BluetoothConnectionServ: write: Write Called.
D/BluetoothConnectionServ: write: Writing to outputstream: Name
E/BluetoothConnectionServ: write: Error writing to output stream. socket closed

这是连接代码：

package com.example.duygu.mybluetoothdevicelist;
import android.app.ProgressDialog;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothServerSocket;
import android.bluetooth.BluetoothSocket;
import android.content.Context;
import android.content.Intent;
import android.os.Build;
import android.support.v4.content.LocalBroadcastManager;
import android.util.Log;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.nio.charset.Charset;
import java.util.UUID;

public class BluetoothConnectionService {
    private static final String TAG = "BluetoothConnectionServ";

    private static final String appName = "MYAPP";

    private static final UUID MY_UUID_INSECURE =
            UUID.fromString("00001101-0000-1000-8000-00805f9b34fb");

    private  BluetoothAdapter mBluetoothAdapter;
    Context mContext;
    private  BluetoothSocket mmSocket;

    private AcceptThread mInsecureAcceptThread;

    private ConnectThread mConnectThread;
    private BluetoothDevice mmDevice;
    private UUID deviceUUID;
    ProgressDialog mProgressDialog;

    private ConnectedThread mConnectedThread;

    public BluetoothConnectionService(Context context) {
        mContext = context;
        mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
        start();
    }

    /**
     * This thread runs while listening for incoming connections. It behaves
     * like a server-side client. It runs until a connection is accepted
     * (or until cancelled).
     */
    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 = mBluetoothAdapter.listenUsingInsecureRfcommWithServiceRecord(appName,MY_UUID_INSECURE);

                Log.d(TAG, "AcceptThread: Setting up Server using: " + MY_UUID_INSECURE);
            }catch (IOException e){
                Log.e(TAG, "AcceptThread: IOException: " + e.getMessage() );
            }

            mmServerSocket = tmp;
        }

        public void run(){
            Log.d(TAG, "run: AcceptThread Running.");

            BluetoothSocket socket = null;

            try{
                // This is a blocking call and will only return on a
                // successful connection or an exception
                Log.d(TAG, "run: RFCOM server socket start.....");

                socket = mmServerSocket.accept();

                Log.d(TAG, "run: RFCOM server socket accepted connection.");

            }catch (IOException e){
                Log.e(TAG, "AcceptThread: IOException: " + e.getMessage() );
            }

            //talk about this is in the 3rd
            if(socket == null){
                connected(socket,mmDevice);
            }

            Log.i(TAG, "END mAcceptThread ");
        }

        public void cancel() {
            Log.d(TAG, "cancel: Canceling AcceptThread.");
            try {
                mmServerSocket.close();
            } catch (IOException e) {
                Log.e(TAG, "cancel: Close of AcceptThread ServerSocket failed. " + e.getMessage() );
            }
        }
    }

    /**
     * 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 BluetoothSocket mmSocket;

        public ConnectThread(BluetoothDevice device, UUID uuid) {
            Log.d(TAG, "ConnectThread: started.");
            mmDevice = device;
            deviceUUID = uuid;
        }

        public void run(){
            BluetoothSocket tmp = null;
            Log.i(TAG, "RUN mConnectThread ");

            // Get a BluetoothSocket for a connection with the
            // given BluetoothDevice
            try {
                Log.d(TAG, "ConnectThread: Trying to create InsecureRfcommSocket using UUID: "
                        +MY_UUID_INSECURE );
                tmp = mmDevice.createRfcommSocketToServiceRecord(deviceUUID);
            } catch (IOException e) {
                Log.e(TAG, "ConnectThread: Could not create InsecureRfcommSocket " + e.getMessage());
            }

            mmSocket = tmp;

            // Always cancel discovery because it will slow down a connection
            mBluetoothAdapter.cancelDiscovery();

            // Make a connection to the BluetoothSocket

            try {
                if(!mmSocket.isConnected())
                {
                    mmSocket.connect();
                    connected(mmSocket,mmDevice);
                }

                //mmSocket.close();

                Log.d(TAG, "run: ConnectThread connected.");
            } catch (IOException e) {
                // Close the socket
                try {
                    if(mmSocket!=null) {
                        mmSocket.close();
                        Log.d(TAG, "run: Closed Socket.");
                    }
                    //  createBluetoothSocket(mmDevice);

                } catch (IOException e1) {
                    Log.e(TAG, "mConnectThread: run: Unable to close connection in socket " + e1.getMessage());
                }
                Log.d(TAG, "run: ConnectThread: Could not connect to UUID: " + MY_UUID_INSECURE );
            }

            connected(mmSocket,mmDevice);
        }
        public void cancel() {
            try {
                Log.d(TAG, "cancel: Closing Client Socket.");
                mmSocket.close();
            } catch (IOException e) {
                Log.e(TAG, "cancel: close() of mmSocket in Connectthread failed. " + e.getMessage());
            }
        }
    }
    private BluetoothSocket createBluetoothSocket(BluetoothDevice device) throws IOException {
        if(Build.VERSION.SDK_INT >= 10){
            try {
                final Method m = device.getClass().getMethod("createInsecureRfcommSocketToServiceRecord", new Class[] { UUID.class });
                Log.d(TAG, "Creating bluetooth socket");

                return (BluetoothSocket) m.invoke(device, MY_UUID_INSECURE);
            } catch (Exception e) {
                Log.e(TAG, "Could not create Insecure RFComm Connection",e);
            }
        }
        return  device.createRfcommSocketToServiceRecord(MY_UUID_INSECURE);
    }

    /**
     * Start the chat service. Specifically start AcceptThread to begin a
     * session in listening (server) mode. Called by the Activity onResume()
     */
    public synchronized void start() {
        Log.d(TAG, "start");

        // Cancel any thread attempting to make a connection
        if (mConnectThread != null) {
            mConnectThread.cancel();
            mConnectThread = null;
        }
        if (mInsecureAcceptThread == null) {
            mInsecureAcceptThread = new AcceptThread();
            mInsecureAcceptThread.start();
        }
    }

    /**
     AcceptThread starts and sits waiting for a connection.
     Then ConnectThread starts and attempts to make a connection with the other devices AcceptThread.
     **/

    public synchronized  void startClient(BluetoothDevice device,UUID uuid){
        Log.d(TAG, "startClient: Started.");

        //initprogress dialog
        mProgressDialog = ProgressDialog.show(mContext,"Connecting Bluetooth" ,"Please Wait...",true);

        mConnectThread = new ConnectThread(device, uuid);
        mConnectThread.start();
    }

    /**
     Finally the ConnectedThread which is responsible for maintaining the BTConnection, Sending the data, and
     receiving incoming data through input/output streams respectively.
     **/
    private class ConnectedThread extends Thread {
        private final InputStream mmInStream;
        private final OutputStream mmOutStream;

        public ConnectedThread(BluetoothSocket socket) {
            Log.d(TAG, "ConnectedThread: Starting.");

            mmSocket = socket;
            InputStream tmpIn = null;
            OutputStream tmpOut = null;

            //dismiss the progressdialog when connection is established
            try{
                mProgressDialog.dismiss();
            }catch (NullPointerException e){
                e.printStackTrace();
            }

            try {
                tmpIn = mmSocket.getInputStream();

            }  catch (IOException e) {
                e.printStackTrace();
            }

            try {
                tmpOut=mmSocket.getOutputStream();
            } catch (IOException e) {
                e.printStackTrace();
            }

            mmInStream = tmpIn;
            mmOutStream = tmpOut;
        }

        public void run(){
            byte[] buffer = new byte[1024];  // buffer store for the stream

            int bytes; // bytes returned from read()

            // Keep listening to the InputStream until an exception occurs
            while (true) {
                // Read from the InputStream
                try {
                    bytes = mmInStream.read(buffer);
                    String incomingMessage = new String(buffer, 0, bytes);
                    Log.d(TAG, "InputStream: " + incomingMessage);
                    Intent incomingMessageIntent = new Intent("incomingMessage");

                    incomingMessageIntent.putExtra("theMessage", incomingMessage);
                    LocalBroadcastManager.getInstance(mContext).sendBroadcast(incomingMessageIntent);

                } catch (IOException e) {
                    Log.e(TAG, "write: Error reading Input Stream. " + e.getMessage() );
                    break;
                }
            }
        }

        //Call this from the main activity to send data to the remote device
        public void write(byte[] bytes) {
            String text = new String(bytes, Charset.defaultCharset());
            Log.d(TAG, "write: Writing to outputstream: " + text);
            try {
                mmOutStream.write(bytes);
                mmOutStream.flush();

            } catch (IOException e) {

                Log.e(TAG, "write: Error writing to output stream. " + e.getMessage() );
            }
        }

        /* Call this from the main activity to shutdown the connection */
        public void cancel() {
            try {
                mmSocket.close();
            } catch (IOException e) { }
        }
    }

    private void connected(BluetoothSocket mmSocket, BluetoothDevice mmDevice) {
        Log.d(TAG, "connected: Starting.");

        // Start the thread to manage the connection and perform transmissions
        mConnectedThread = new ConnectedThread(mmSocket);
        mConnectedThread.start();
    }

    /**
     * Write to the ConnectedThread in an unsynchronized manner
     *
     * @param out The bytes to write
     * @see ConnectedThread#write(byte[])
     */
    public void write(byte[] out) {
        // Create temporary object
        ConnectedThread r;
        if(mConnectedThread==null){

        }
        // Synchronize a copy of the ConnectedThread
        Log.d(TAG, "write: Write Called.");
        //perform the write
        mConnectedThread.write(out);
    }
    public void SocketClose(){
        try {
            mmSocket.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

我想我的问题是，插座已关闭，但必须重新启动：

private class ConnectThread extends Thread {
    private BluetoothSocket mmSocket;

    public ConnectThread(BluetoothDevice device, UUID uuid) {
        Log.d(TAG, "ConnectThread: started.");
        mmDevice = device;
        deviceUUID = uuid;
    }

    public void run(){
        BluetoothSocket tmp = null;
        Log.i(TAG, "RUN mConnectThread ");

        // Get a BluetoothSocket for a connection with the
        // given BluetoothDevice
        try {
            Log.d(TAG, "ConnectThread: Trying to create InsecureRfcommSocket using UUID: "
                    +MY_UUID_INSECURE );
            tmp = mmDevice.createRfcommSocketToServiceRecord(deviceUUID);
        } catch (IOException e) {
            Log.e(TAG, "ConnectThread: Could not create InsecureRfcommSocket " + e.getMessage());
        }

        mmSocket = tmp;

        // Always cancel discovery because it will slow down a connection
        mBluetoothAdapter.cancelDiscovery();

        // Make a connection to the BluetoothSocket

        try {
            if(!mmSocket.isConnected())
            {
                mmSocket.connect();
                connected(mmSocket,mmDevice);
            }

            //mmSocket.close();

            Log.d(TAG, "run: ConnectThread connected.");
        } catch (IOException e) {
            // Close the socket
            try {
             if(mmSocket!=null) {
                 mmSocket.close();
                 Log.d(TAG, "run: Closed Socket.");
             }

                //  createBluetoothSocket(mmDevice);


            } catch (IOException e1) {
                Log.e(TAG, "mConnectThread: run: Unable to close connection in socket " + e1.getMessage());
            }
            Log.d(TAG, "run: ConnectThread: Could not connect to UUID: " + MY_UUID_INSECURE );
        }
        connected(mmSocket,mmDevice);
    }
    public void cancel() {
        try {
            Log.d(TAG, "cancel: Closing Client Socket.");
            mmSocket.close();
        } catch (IOException e) {
            Log.e(TAG, "cancel: close() of mmSocket in Connectthread failed. " + e.getMessage());
        }
    }
}

我找到了解决办法：

仅从主活动开始发送消息。因此，如果您尝试该片段或其他活动，您将失败

您必须编写方法，即在主活动上发送消息。该方法必须调用片段并在片段上选择发送消息，但数据必须在主活动上发送