谁能告诉我这个问题是什么？我试图让我的应用程序启动一个Accept Thread，但是这个错误一直在发生。
任何人都可以帮忙吗？
我正在使用带有 Android 2.1 的 HTC Hero。
ERROR/BluetoothChatService(9585): java.io.IOException: Bindlisten failed
android.bluetooth.BluetoothAdapter.listenUsingRfcommWithServiceRecord(BluetoothAdapter.java:749)
根据这里
public BluetoothServerSocket listenUsingRfcommWithServiceRecord (String name, UUID uuid)
Throws IOException on error, for example Bluetooth not available, or insufficient permissions, or channel in use.
这里有一些代码：我已将其用作BluetoothChat.java开发以下代码的指导和参考。因此，一旦启用了蓝牙，用户将按下菜单按钮，然后会出现三个按钮。server如果用户想要启动接受线程并成为游戏的主机，则用户选择按钮。
public boolean onOptionsItemSelected(MenuItem item) {
Intent serverIntent = null;
switch (item.getItemId()) {
case R.id.scan:
// Launch the DeviceListActivity to see devices and do scan
serverIntent = new Intent(this, DeviceListActivity.class);
startActivityForResult(serverIntent, REQUEST_CONNECT_DEVICE_SECURE);
return true;
case R.id.discoverable:
// Ensure this device is discoverable by others
ensureDiscoverable();
return true;
case R.id.server:
// Ensure this device is discoverable by others
if (mGameService != null)
{
// Only if the state is STATE_NONE, do we know that we haven't started already
if (mGameService.getState() == BluetoothChatService.STATE_NONE)
{
// Start the Bluetooth chat services
mGameService.start();
}
}
return true;
}
return false;
}
一旦用户选择Server按钮，它将从另一个类调用以下方法：
public synchronized void start() {
if (D) Log.d(TAG, "start");
// Cancel any thread attempting to make a connection
if (mConnectThread != null) {mConnectThread.cancel(); mConnectThread = null;}
// Cancel any thread currently running a connection
if (mConnectedThread != null) {mConnectedThread.cancel(); mConnectedThread = null;}
setState(STATE_LISTEN);
// Start the thread to listen on a BluetoothServerSocket
if (mSecureAcceptThread == null) {
mSecureAcceptThread = new AcceptThread();
mSecureAcceptThread.start();
}
}
然后这是Accept Thread. 使用调试器，我可以确认Accept Thread已执行。但是它一开始就失败了try catch，它从不执行这个
tmp = mAdapter.listenUsingRfcommWithServiceRecord(NAME,MY_UUID);
接受以下线程：
private class AcceptThread extends Thread {
// The local server socket
private final BluetoothServerSocket mmServerSocket;
public AcceptThread() {
BluetoothServerSocket tmp = null;
// Create a new list ening server socket
try {
tmp = mAdapter.listenUsingRfcommWithServiceRecord(NAME,MY_UUID);
}
catch (IOException e) {
Log.e(TAG, "Socket Type: " + "listen() failed", e);
}
mmServerSocket = tmp;
}
public void run() {
if (D) Log.d(TAG, "Socket Type: " +
"BEGIN mAcceptThread" + this);
setName("AcceptThread");
BluetoothSocket socket = null;
// Listen to the server socket if we're not connected
while (mState != STATE_CONNECTED) {
try {
// This is a blocking call and will only return on a
// successful connection or an exception
socket = mmServerSocket.accept();
} catch (IOException e) {
Log.e(TAG, "Socket Type: " + "accept() failed", e);
break;
}
// If a connection was accepted
if (socket != null) {
synchronized (BluetoothChatService.this) {
switch (mState) {
case STATE_LISTEN:
case STATE_CONNECTING:
// Situation normal. Start the connected thread.
connected(socket, socket.getRemoteDevice());
break;
case STATE_NONE:
case STATE_CONNECTED:
// Either not ready or already connected. Terminate new socket.
try {
socket.close();
} catch (IOException e) {
Log.e(TAG, "Could not close unwanted socket", e);
}
break;
}
}
}
}
if (D) Log.i(TAG, "END mAcceptThread, socket Type: ");
}
我刚刚做了一些调试，在Accept Thread. 在线socket = mmServerSocket.accept();上。
[2011-05-27 13:52:21 - DeviceMonitor]Adb connection Error:An existing connection was forcibly closed by the remote host
[2011-05-27 13:52:21 - Logcat]An existing connection was forcibly closed by the remote host
java.io.IOException: An existing connection was forcibly closed by the remote host
at sun.nio.ch.SocketDispatcher.read0(Native Method)
at sun.nio.ch.SocketDispatcher.read(Unknown Source)
at sun.nio.ch.IOUtil.readIntoNativeBuffer(Unknown Source)
at sun.nio.ch.IOUtil.read(Unknown Source)
at sun.nio.ch.SocketChannelImpl.read(Unknown Source)
at com.android.ddmlib.AdbHelper.executeRemoteCommand(AdbHelper.java:395)
at com.android.ddmlib.Device.executeShellCommand(Device.java:284)
at com.android.ddmuilib.logcat.LogPanel$3.run(LogPanel.java:527)
[2011-05-27 13:52:23 - DeviceMonitor]Connection attempts: 1
[2011-05-27 13:52:25 - DeviceMonitor]Connection attempts: 2
[2011-05-27 13:52:27 - DeviceMonitor]Connection attempts: 3
[2011-05-27 14:33:48 - Device]Error during Sync: timeout.
[2011-05-27 16:49:43 - ddms]null
java.lang.NullPointerException
at com.android.ddmlib.Client.sendAndConsume(Client.java:572)
at com.android.ddmlib.HandleHello.sendHELO(HandleHello.java:142)
at com.android.ddmlib.HandleHello.sendHelloCommands(HandleHello.java:65)
at com.android.ddmlib.Client.getJdwpPacket(Client.java:671)
at com.android.ddmlib.MonitorThread.processClientActivity(MonitorThread.java:317)
at com.android.ddmlib.MonitorThread.run(MonitorThread.java:263)
[2011-05-27 16:49:43 - ddms]null
java.lang.NullPointerException
at com.android.ddmlib.Client.sendAndConsume(Client.java:572)
at com.android.ddmlib.HandleHello.sendHELO(HandleHello.java:142)
at com.android.ddmlib.HandleHello.sendHelloCommands(HandleHello.java:65)
at com.android.ddmlib.Client.getJdwpPacket(Client.java:671)
at com.android.ddmlib.MonitorThread.processClientActivity(MonitorThread.java:317)
at com.android.ddmlib.MonitorThread.run(MonitorThread.java:263)