自从我尝试连接2个Android手机之后，它已经存在了3天多。 Whoz版本是4.1.2和4.0.4，但没有运气。我已经尝试了stackoverflow和谷歌的所有可能的解决方案。我面临的问题是，我可以使用以下方法发现我的应用程序的uuid但仍然当我尝试连接服务器时，我收到消息“服务发现失败”。需要一些帮助的人。我的服务器端代码如下所示，它有点乱，只关注未注释的行:)。评论的代码是我尝试但失败的代码，以及未注释的代码。
anotherDevice.fetchUuidsWithSdp();
发现uuid的方法（工作正常）
services name found ... but still getting service discovery failed message
ERROR like java.io.IOException: Service discovery failed
package com.example.agent;
import java.io.IOException;
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.content.Context;
import android.telephony.TelephonyManager;
import android.util.Log;
public class AcceptThread extends Thread {
private final BluetoothServerSocket mmServerSocket;
BluetoothAdapter mBluetoothAdapter;
Context mContext;
BluetoothDevice mmDevice;
// String uuidString = "755e5400-77bc-11e3-981f-0800200c9a66";
String uuidString = "00001101-0000-1000-8000-00805F9B34FB";
public AcceptThread(Context context,BluetoothDevice device) throws IOException, IllegalArgumentException, IllegalAccessException, InvocationTargetException {
// Use a temporary object that is later assigned to mmServerSocket,
// because mmServerSocket is final
mContext = context;
mmDevice = device;
mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
BluetoothServerSocket tmp = null;
//TelephonyManager tManager = (TelephonyManager)mContext.getSystemService(Context.TELEPHONY_SERVICE);
//String uuid = tManager.getDeviceId();
UUID uid = UUID.fromString(uuidString);
// tmp = mBluetoothAdapter.listenUsingRfcommWithServiceRecord("HackingService", uid);
tmp = mBluetoothAdapter.listenUsingInsecureRfcommWithServiceRecord("Hackng", uid);
//
// Method m = null;
// try {
// m = mBluetoothAdapter.getClass().getMethod("listenUsingRfcommOn", new Class[] { int.class });
// } catch (NoSuchMethodException e) {
// // TODO Auto-generated catch block
// e.printStackTrace();
// }
// tmp = (BluetoothServerSocket) m.invoke(mBluetoothAdapter, 1);
// tmp = InsecureBluetooth.listenUsingRfcommWithServiceRecord(mBluetoothAdapter, "Hacker", uid, false);
mmServerSocket = tmp;
start();
}
public void run() {
BluetoothSocket socket = null;
// Keep listening until exception occurs or a socket is returned
while (true) {
try {
socket = mmServerSocket.accept();
} catch (IOException e) {
// break;
}
// If a connection was accepted
if (socket != null) {
// Do work to manage the connection (in a separate thread)
// manageConnectedSocket(socket);
try {
mmServerSocket.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
break;
}
}
}
/** Will cancel the listening socket, and cause the thread to finish */
public void cancel() {
try {
mmServerSocket.close();
} catch (IOException e) { }
}
}
这是我的客户端代码
package com.example.c_agent;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import android.widget.Toast;
//import com.example.agent.MainActivity;
import android.bluetooth.*;
import android.telephony.TelephonyManager;
import android.util.Log;
import android.view.View.OnClickListener;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;
import java.util.UUID;
public class ConnectThread extends Thread {
private BluetoothSocket mmSocket;
private final BluetoothDevice mmDevice;
BluetoothAdapter mBluetoothAdapter;
Context mContext;
public InputStream mmInStream;
public OutputStream mmOutStream;
// String uuidString = "755e5400-77bc-11e3-981f-0800200c9a66";
String uuidString = "00001101-0000-1000-8000-00805F9B34FB";
public ConnectThread(BluetoothDevice device, Context context) throws IOException, Throwable, IllegalAccessException, InvocationTargetException {
// Use a temporary object that is later assigned to mmSocket,
// because mmSocket is final
mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
mContext = context;
BluetoothSocket tmp = null;
mmInStream = null;
mmOutStream = null;
mmDevice = device;
// MY_UUID is the app's UUID string, also used by the server code
// TelephonyManager tManager = (TelephonyManager)mContext.getSystemService(Context.TELEPHONY_SERVICE);
// String uuid = tManager.getDeviceId();
UUID uid = UUID.fromString(uuidString);
// tmp = mmDevice.createRfcommSocketToServiceRecord(uid);
tmp = mmDevice.createInsecureRfcommSocketToServiceRecord(uid);
// tmp = InsecureBluetooth.createRfcommSocketToServiceRecord(mmDevice, uid, false);
// Class<?> clazz = mmDevice.getClass();
// Class<?>[] paramTypes = new Class<?>[] {Integer.TYPE};
//
// Method m = clazz.getMethod("createRfcommSocket", paramTypes);
// Object[] params = new Object[] {Integer.valueOf(1)};
//
// tmp = (BluetoothSocket) m.invoke(mmDevice, params);
// fallbackSocket.connect();
// Method m = device.getClass().getMethod("createRfcommSocket", new Class[] {int.class});
// tmp = (BluetoothSocket) m.invoke(device, 1);
mmSocket = tmp;
// mBluetoothAdapter.cancelDiscovery();
start();
}
public void run() {
// Cancel discovery because it will slow down the connection
mBluetoothAdapter.cancelDiscovery();
while(true)
{
try {
// Connect the device through the socket. This will block
// until it succeeds or throws an exception
mmSocket.connect();
} catch (IOException connectException) {
// Unable to connect; close the socket and get out
// try {
// Toast.makeText(this, connectException.getMessage(), Toast.LENGTH_LONG).show();
Log.d("Exception", connectException.getMessage());
// mmSocket.close();
// }
// catch (IOException closeException) { }
// return;
}
}
// Do work to manage the connection (in a separate thread)
// manageConnectedSocket(mmSocket);
}
/** Will cancel an in-progress connection, and close the socket */
public void cancel() {
try {
mmSocket.close();
} catch (IOException e) { }
}
}