4

検出できないデバイスがたくさんありますが、それらの MAC アドレスはわかっています。現在、ConnectThread でこれを使用して複数のデバイスに接続できます。

Method m = device.getClass().getMethod("createRfcommSocket",new Class[] { int.class });

tmp = (BluetoothSocket) m.invoke(device, 1);

問題は、2.3 より前のデバイスで安全でない RFCOMM をサポートしたいということです。次に、代わりにこれを実行できる別の回答でこれを見つけました：

tmp = InsecureBluetooth.createRfcommSocketToServiceRecord(device,MY_UUID, true);

これは、ペアリングを必要とせずに単一のデバイスに接続するのに完全に機能します.

私の質問は、両方の世界を最大限に活用し、InsecureBluetooth クラスでもリフレクションを使用するにはどうすればよいかということです。または、InsecureBluetooth クラス内で行う必要がありますか? InsecureBluetooth クラスの関連部分は次のとおりです。

private static BluetoothSocket createRfcommSocketToServiceRecord(
        BluetoothDevice device, int port, UUID uuid, boolean encrypt)
        throws IOException {
    try {
        BluetoothSocket socket = null;
        Constructor<BluetoothSocket> constructor = BluetoothSocket.class
                .getDeclaredConstructor(int.class, int.class, boolean.class,
                        boolean.class, BluetoothDevice.class, int.class, ParcelUuid.class);
        if (constructor == null)
            throw new RuntimeException("can't find the constructor for socket");

        constructor.setAccessible(true);
        Field f_rfcomm_type = BluetoothSocket.class
                .getDeclaredField("TYPE_RFCOMM");
        f_rfcomm_type.setAccessible(true);
        int rfcomm_type = (Integer) f_rfcomm_type.get(null);
        socket = constructor.newInstance(new Object[] { rfcomm_type, -1, false,
                true, device, port, uuid != null ? new ParcelUuid(uuid) : null });
        return socket;
    } catch (NoSuchMethodException e) {
        throw new RuntimeException(e);
    } catch (NoSuchFieldException e) {
        throw new RuntimeException(e);
    } catch (IllegalAccessException e) {
        throw new RuntimeException(e);
    } catch (InstantiationException e) {
        throw new RuntimeException(e);
    } catch (InvocationTargetException e) {
        if (e.getCause() instanceof IOException) {
            throw (IOException) e.getCause();
        }
        throw new RuntimeException(e.getCause());
    }
}

public static BluetoothSocket createRfcommSocketToServiceRecord(
        BluetoothDevice device, UUID uuid, boolean encrypt) throws IOException {
    return createRfcommSocketToServiceRecord(device, -1, uuid, encrypt);
}

public static BluetoothSocket createRfcommSocket(BluetoothDevice device,
        int port, boolean encrypt) throws IOException {
    return createRfcommSocketToServiceRecord(device, port, null, encrypt);
}
4

1 に答える 1

0

次のクラスを使用して、安全でない Bluetooth ソケット接続を作成できます。リフレクションを自動的に処理して、2.3.3 未満の SDK にこの機能を提供します。

import java.io.IOException;
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.UUID;

import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothServerSocket;
import android.bluetooth.BluetoothSocket;
import android.os.Binder;
import android.os.Handler;
import android.os.IBinder;
import android.os.ParcelUuid;
import android.util.Log;

/**
 * Class to offer unsecure bluetooth socket connection.<br />
 * It was intended to be used when building the app with API version below 10 (API < Android2.3.3)
 * @author waa
 *
 */
@SuppressWarnings("all")
public class UnpairedBluetooth {
    static private class InUse extends RuntimeException {
    }

    public static BluetoothServerSocket listenUsingRfcommWithServiceRecord(BluetoothAdapter adapter, String name, UUID uuid, boolean encrypt) throws IOException {
        try {
            Class c_rfcomm_channel_picker = null;
            Class[] children = BluetoothAdapter.class.getDeclaredClasses();
            for(Class c : children) {
                Log.e("TO", "class " + c.getCanonicalName());
                if(c.getCanonicalName().equals(BluetoothAdapter.class.getName() + ".RfcommChannelPicker")) {
                    c_rfcomm_channel_picker = c;
                    break;
                }
            }
            if(c_rfcomm_channel_picker == null)
                throw new RuntimeException("can't find the rfcomm channel picker class");

            Constructor constructor = c_rfcomm_channel_picker.getDeclaredConstructor(UUID.class);
            if(constructor == null)
                throw new RuntimeException("can't find the constructor for rfcomm channel picker");
            Object rfcomm_channel_picker = constructor.newInstance(new Object[] {uuid});
            Method m_next_channel = c_rfcomm_channel_picker.getDeclaredMethod("nextChannel", new Class[] {});
            m_next_channel.setAccessible(true);

            BluetoothServerSocket socket = null;

            int channel;
            int errno;
            while (true) {
                channel = (Integer)m_next_channel.invoke(rfcomm_channel_picker, new Object[] {});

                if (channel == -1) {
                    throw new IOException("No available channels");
                }

                try {
                    socket = listenUsingRfcomm(channel, encrypt);
                    break;
                } catch(InUse e) {
                    continue;
                }
            }

            Field f_internal_service = adapter.getClass().getDeclaredField("mService");
            f_internal_service.setAccessible(true);
            Object internal_service = f_internal_service.get(adapter);

            Method m_add_rfcomm_service_record = internal_service.getClass().getDeclaredMethod("addRfcommServiceRecord", new Class[] {String.class, ParcelUuid.class, int.class, IBinder.class});
            m_add_rfcomm_service_record.setAccessible(true);

            int handle = (Integer)m_add_rfcomm_service_record.invoke(internal_service, new Object[] { name, new ParcelUuid(uuid), channel, new Binder() } );

            if (handle == -1) {
                try {
                    socket.close();
                } catch (IOException e) {}
                throw new IOException("Not able to register SDP record for " + name);
            }
            Field f_internal_handler = adapter.getClass().getDeclaredField("mHandler");
            f_internal_handler.setAccessible(true);
            Object internal_handler = f_internal_handler.get(adapter);

            Method m_set_close_handler = socket.getClass().getDeclaredMethod("setCloseHandler", new Class[] {Handler.class, int.class});
            m_set_close_handler.setAccessible(true);

            m_set_close_handler.invoke(socket, new Object[] { internal_handler, handle});
            return socket;
        } catch (NoSuchMethodException e) {
            throw new RuntimeException(e);
        } catch (NoSuchFieldException e) {
            throw new RuntimeException(e);
        } catch(IllegalAccessException e) {
            throw new RuntimeException(e);
        } catch(InstantiationException e) {
            throw new RuntimeException(e);
        } catch(InvocationTargetException e) {
            if(e.getCause() instanceof IOException) {
                throw (IOException)e.getCause();
            }
            throw new RuntimeException(e.getCause());
        }   
    }
    private static BluetoothServerSocket listenUsingRfcomm(/*BluetoothAdapter adapter, */ int port, boolean encrypt, boolean reuse) throws IOException, InUse {
        BluetoothServerSocket socket = null;
        try {
            Constructor<BluetoothServerSocket> constructor = BluetoothServerSocket.class.getDeclaredConstructor(int.class, boolean.class, boolean.class, int.class);
            if(constructor == null)
                throw new RuntimeException("can't find the constructor");
            constructor.setAccessible(true);
            Field f_rfcomm_type = BluetoothSocket.class.getDeclaredField("TYPE_RFCOMM");
            f_rfcomm_type.setAccessible(true);
            int rfcomm_type = (Integer)f_rfcomm_type.get(null);

            Field f_e_addr_in_use = BluetoothSocket.class.getDeclaredField("EADDRINUSE");
            f_e_addr_in_use.setAccessible(true);
            int e_addr_in_use = (Integer)f_e_addr_in_use.get(null);

            socket = constructor.newInstance(new Object[] { rfcomm_type, false, encrypt, port } );

            Field f_internal_socket = socket.getClass().getDeclaredField("mSocket");
            f_internal_socket.setAccessible(true);
            Object internal_socket = f_internal_socket.get(socket);
            Method m_bind_listen = internal_socket.getClass().getDeclaredMethod("bindListen", new Class[] {});
            m_bind_listen.setAccessible(true);
            Object result = m_bind_listen.invoke(internal_socket, new Object[] {});

            int errno = (Integer)result;
            if(reuse && errno == e_addr_in_use) {
                throw new InUse();
            } else if (errno != 0) {
                try {
                    socket.close();
                } catch (IOException e) {}
                internal_socket.getClass().getMethod("throwErrnoNative", new Class[] {int.class}).invoke(internal_socket, new Object[] { errno });
            }
            return socket;
        } catch (NoSuchMethodException e) {
            throw new RuntimeException(e);
        } catch (NoSuchFieldException e) {
            throw new RuntimeException(e);
        } catch(IllegalAccessException e) {
            throw new RuntimeException(e);
        } catch(InstantiationException e) {
            throw new RuntimeException(e);
        } catch(InvocationTargetException e) {
            if(e.getCause() instanceof IOException) {
                throw (IOException)e.getCause();
            }
            throw new RuntimeException(e.getCause());
        }
    }
    public static BluetoothServerSocket listenUsingRfcomm(int port, boolean encrypt) throws IOException {
        return listenUsingRfcomm(port, encrypt, false);
    }
    private static BluetoothSocket createRfcommSocketToServiceRecord(BluetoothDevice device, int port, UUID uuid, boolean encrypt) throws IOException {
        try {
            BluetoothSocket socket = null;
            Constructor<BluetoothSocket> constructor = BluetoothSocket.class.getDeclaredConstructor(
                    int.class, int.class, boolean.class, boolean.class, BluetoothDevice.class, int.class, ParcelUuid.class);
            if(constructor == null)
                throw new RuntimeException("can't find the constructor for socket");

            constructor.setAccessible(true);
            Field f_rfcomm_type = BluetoothSocket.class.getDeclaredField("TYPE_RFCOMM");
            f_rfcomm_type.setAccessible(true);
            int rfcomm_type = (Integer)f_rfcomm_type.get(null);
//          socket = constructor.newInstance(new Object[] { rfcomm_type, -1, false, true, device, port, uuid != null ? new ParcelUuid(uuid) : null} );
            socket = constructor.newInstance(new Object[] { rfcomm_type, -1, false, encrypt, device, port, uuid != null ? new ParcelUuid(uuid) : null} );
            return socket;
        } catch (NoSuchMethodException e) {
            throw new RuntimeException(e);
        } catch (NoSuchFieldException e) {
            throw new RuntimeException(e);
        } catch(IllegalAccessException e) {
            throw new RuntimeException(e);
        } catch(InstantiationException e) {
            throw new RuntimeException(e);
        } catch(InvocationTargetException e) {
            if(e.getCause() instanceof IOException) {
                throw (IOException)e.getCause();
            }
            throw new RuntimeException(e.getCause());
        }
    }
    public static BluetoothSocket createRfcommSocketToServiceRecord(BluetoothDevice device, UUID uuid, boolean encrypt) throws IOException{
        return createRfcommSocketToServiceRecord(device, -1, uuid, encrypt);
    }
    public static BluetoothSocket createRfcommSocket(BluetoothDevice device, int port, boolean encrypt) throws IOException {
        return createRfcommSocketToServiceRecord(device, port, null, encrypt);
    }
}

詳細については、このリンクを参照してください。

于 2012-04-26T12:22:25.627 に答える