关于蓝牙socket 服务器端首次accept总出错！

============问题描述============

我使用蓝牙socket通信，服务器端使用socket = mmServerSocket.accept()这个语句，可是这里总是报错！ 错误如下：

java.io.IOException: Not able to register SDP record for mango

at android.bluetooth.BluetoothAdapter.createNewRfcommSocketAndRecord(BluetoothAdapter.java:890)

at android.bluetooth.BluetoothAdapter.listenUsingRfcommWithServiceRecord(BluetoothAdapter.java:813)

at com.card.test.receivecard$AcceptThread.<init>(receivecard.java:118)

at com.card.test.receivecard.onStart(receivecard.java:96)

at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1129)

at android.app.Activity.performStart(Activity.java:3797)

at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1620)

at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)

at android.app.ActivityThread.access$1500(ActivityThread.java:117)

at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)

at android.os.Handler.dispatchMessage(Handler.java:99)

at android.os.Looper.loop(Looper.java:130)

at android.app.ActivityThread.main(ActivityThread.java:3683)

at java.lang.reflect.Method.invokeNative(Native Method)

at java.lang.reflect.Method.invoke(Method.java:507)

at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:878)

at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:636)

at dalvik.system.NativeStart.main(Native Method)

null

threadid=9: thread exiting with uncaught exception (group=0x401f6560)

ATAL EXCEPTION: Thread-10

java.lang.NullPointerException

at com.card.test.receivecard$AcceptThread.run(receivecard.java:132)

我的接收端代码片段如下：

private class AcceptThread extends Thread {

private final BluetoothServerSocket mmServerSocket;

private InputStream mmInStream;

public AcceptThread() {

final String SPP_UUID = "00001101-0000-1000-8000-00805F9B34FB";

UUID uuid = UUID.fromString(SPP_UUID);

BluetoothServerSocket tmp = null;

try {

tmp = mBluetoothAdapter.listenUsingRfcommWithServiceRecord(Name,uuid);

} catch (IOException e) {

e.printStackTrace();

}

mmServerSocket = tmp;

}

public void run() {

BluetoothSocket socket = null;

// Keep listening until exception occurs or a socket is returned

while (true) {

try {

System.out.println(mmServerSocket);//由打印信息知mmServerSocket为null

socket = mmServerSocket.accept(); //所以这里出错了

} catch (IOException e) {

e.printStackTrace();

finish();

break;

}

// If a connection was accepted

if (socket != null) {

try {

以下省略。。。

}

发送端代码片段如下：

private class ClientThread extends Thread {

private final BluetoothSocket msocket;

private final BluetoothDevice mdevice;

final String SPP_UUID = "00001101-0000-1000-8000-00805F9B34FB";

UUID uuid = UUID.fromString(SPP_UUID);

public ClientThread(BluetoothDevice device) {

//建立socket连接

BluetoothSocket tmp = null;

mdevice = device;

try {

tmp = mdevice.createRfcommSocketToServiceRecord(uuid);

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

msocket = tmp;

}

public void run() {

mBluetoothAdapter.cancelDiscovery();

try {

msocket.connect();

} catch (IOException e) {

e.printStackTrace();

}

// Do work to manage the connection (in a separate thread)

try {

以下省略。。。

我这两段代码是在两个不同的activity里面写的(sendcard.activity和receivecard.activity).想要的功能是用蓝牙将名片发送出去，使用时，手机A点发送按钮，跳到sendcard.activity，手机B基本上同时点接收按钮，跳到receivecard.activity。但是问题是：几乎每次刚安装好程序，首次使用时，就会accept报错（如上文错误信息），然后多尝试几次发送接收，就能成功……

不知道我说清楚没 就是首次点接收按钮，运行到accept处，程序都会意外终止，再重新点开程序试一次就不会出错了

这样很影响用户体验……

求各位大神帮帮忙！！感激不尽！！！！

虽然剩的分不多了……

============解决方案1============

做个循环，当错误时重新执行过，直到无错误后退出循环，这个应该是UUID识别的问题。