sockets - 蓝牙 Secureaccept() 失败、Nexus 7、Android 4.2.2

Question

我正在运行 Android SDK 4.2 示例包中的蓝牙聊天示例，未对代码进行任何修改。我的目标是运行 Android 4.2.2 的 Nexus 7。当我尝试安全连接到配对设备时，我立即收到这些错误。 Connect Insecure 也会失败，导致类似的错误。有时，我重新启动BT后，连接就会成功。

我对此进行了研究，并看到了许多关于 Android 4 上 BT 问题的引用，但我认为它们应该在后续的 4.2 版本中得到修复。 Nexus 7 是我唯一的设备，所以我想知道其他设备上是否也会出现这种情况。

这个问题有解决办法吗？预先感谢您的任何指导!

更新:经过进一步调查，我发现 this link ，这表明BT资源堆栈存在泄漏，在4.2.2中仍然存在，可以通过手动停止/重新启动BT来解决。有人找到了程序化的解决方法吗？

04-16 08:50:48.505: E/BluetoothChat(28905): +++ ON CREATE +++
04-16 08:50:48.535: E/BluetoothChat(28905): ++ ON START ++
04-16 08:50:48.535: D/BluetoothChat(28905): setupChat()
04-16 08:50:48.535: E/BluetoothChat(28905): + ON RESUME +
04-16 08:50:48.535: D/BluetoothChatService(28905): start
04-16 08:50:48.535: D/BluetoothChatService(28905): setState() 0 -> 1
04-16 08:50:48.545: W/BluetoothAdapter(28905): getBluetoothService() called with no BluetoothManagerCallback
04-16 08:50:48.545: D/BluetoothChatService(28905): Socket Type: SecureBEGIN mAcceptThreadThread[Thread-9834,5,main]
04-16 08:50:48.545: W/BluetoothAdapter(28905): getBluetoothService() called with no BluetoothManagerCallback
04-16 08:50:48.545: D/BluetoothChatService(28905): Socket Type: InsecureBEGIN mAcceptThreadThread[Thread-9835,5,main]
04-16 08:50:48.555: I/BluetoothChat(28905): MESSAGE_STATE_CHANGE: 1
04-16 08:50:48.615: D/libEGL(28905): loaded /system/lib/egl/libEGL_tegra.so
04-16 08:50:48.635: D/libEGL(28905): loaded /system/lib/egl/libGLESv1_CM_tegra.so
04-16 08:50:48.645: D/libEGL(28905): loaded /system/lib/egl/libGLESv2_tegra.so
04-16 08:50:48.675: D/OpenGLRenderer(28905): Enabling debug mode 0
04-16 08:52:08.625: E/BluetoothChat(28905): - ON PAUSE -
04-16 08:52:08.755: D/dalvikvm(28905): GC_CONCURRENT freed 134K, 4% free 7529K/7792K, paused 3ms+3ms, total 29ms
04-16 08:52:10.115: D/BluetoothChat(28905): onActivityResult -1
04-16 08:52:10.115: D/BluetoothChatService(28905): connect to: C8:D1:5E:2F:12:E8
04-16 08:52:10.115: D/BluetoothChatService(28905): setState() 1 -> 2
04-16 08:52:10.115: I/BluetoothChatService(28905): BEGIN mConnectThread SocketType:Secure
04-16 08:52:10.115: E/BluetoothChat(28905): + ON RESUME +
04-16 08:52:10.125: W/BluetoothAdapter(28905): getBluetoothService() called with no BluetoothManagerCallback
04-16 08:52:10.125: D/BluetoothSocket(28905): connect(), SocketState: INIT, mPfd: {ParcelFileDescriptor: FileDescriptor[54]}
04-16 08:52:10.135: I/BluetoothChat(28905): MESSAGE_STATE_CHANGE: 2
04-16 08:52:11.645: D/BluetoothChatService(28905): connected, Socket Type:Secure
04-16 08:52:11.645: D/BluetoothChatService(28905): Socket TypeSecurecancel Thread[AcceptThreadSecure,5,main]
04-16 08:52:11.645: D/BluetoothChatService(28905): Socket TypeInsecurecancel Thread[AcceptThreadInsecure,5,main]
04-16 08:52:11.645: D/BluetoothChatService(28905): create ConnectedThread: Secure
04-16 08:52:11.655: E/BluetoothChatService(28905): Socket Type: Insecureaccept() failed
04-16 08:52:11.655: E/BluetoothChatService(28905): java.io.IOException: read failed, socket might closed or timeout, read ret: -1
04-16 08:52:11.655: E/BluetoothChatService(28905):  at android.bluetooth.BluetoothSocket.readAll(BluetoothSocket.java:492)
04-16 08:52:11.655: E/BluetoothChatService(28905):  at android.bluetooth.BluetoothSocket.waitSocketSignal(BluetoothSocket.java:469)
04-16 08:52:11.655: E/BluetoothChatService(28905):  at android.bluetooth.BluetoothSocket.accept(BluetoothSocket.java:393)
04-16 08:52:11.655: E/BluetoothChatService(28905):  at android.bluetooth.BluetoothServerSocket.accept(BluetoothServerSocket.java:131)
04-16 08:52:11.655: E/BluetoothChatService(28905):  at android.bluetooth.BluetoothServerSocket.accept(BluetoothServerSocket.java:117)
04-16 08:52:11.655: E/BluetoothChatService(28905):  at com.example.android.BluetoothChat.BluetoothChatService$AcceptThread.run(BluetoothChatService.java:301)
04-16 08:52:11.655: D/BluetoothChatService(28905): setState() 2 -> 3
04-16 08:52:11.655: I/BluetoothChatService(28905): END mAcceptThread, socket Type: Insecure
04-16 08:52:11.655: E/BluetoothChatService(28905): Socket Type: Secureaccept() failed
04-16 08:52:11.655: E/BluetoothChatService(28905): java.io.IOException: read failed, socket might closed or timeout, read ret: -1
04-16 08:52:11.655: E/BluetoothChatService(28905):  at android.bluetooth.BluetoothSocket.readAll(BluetoothSocket.java:492)
04-16 08:52:11.655: E/BluetoothChatService(28905):  at android.bluetooth.BluetoothSocket.waitSocketSignal(BluetoothSocket.java:469)
04-16 08:52:11.655: E/BluetoothChatService(28905):  at android.bluetooth.BluetoothSocket.accept(BluetoothSocket.java:393)
04-16 08:52:11.655: E/BluetoothChatService(28905):  at android.bluetooth.BluetoothServerSocket.accept(BluetoothServerSocket.java:131)
04-16 08:52:11.655: E/BluetoothChatService(28905):  at android.bluetooth.BluetoothServerSocket.accept(BluetoothServerSocket.java:117)
04-16 08:52:11.655: E/BluetoothChatService(28905):  at com.example.android.BluetoothChat.BluetoothChatService$AcceptThread.run(BluetoothChatService.java:301)
04-16 08:52:11.655: I/BluetoothChatService(28905): END mAcceptThread, socket Type: Secure
04-16 08:52:11.655: I/BluetoothChatService(28905): BEGIN mConnectedThread
04-16 08:52:11.665: I/BluetoothChat(28905): MESSAGE_STATE_CHANGE: 3
04-16 08:52:36.985: E/BluetoothChat(28905): - ON PAUSE -
04-16 08:52:37.005: E/BluetoothChat(28905): -- ON STOP --
04-16 08:52:37.015: D/BluetoothChatService(28905): stop
04-16 08:52:37.015: E/BluetoothChatService(28905): disconnected
04-16 08:52:37.015: E/BluetoothChatService(28905): java.io.IOException: bt socket closed, read return: -1
04-16 08:52:37.015: E/BluetoothChatService(28905):  at android.bluetooth.BluetoothSocket.read(BluetoothSocket.java:416)
04-16 08:52:37.015: E/BluetoothChatService(28905):  at android.bluetooth.BluetoothInputStream.read(BluetoothInputStream.java:96)
04-16 08:52:37.015: E/BluetoothChatService(28905):  at java.io.InputStream.read(InputStream.java:163)
04-16 08:52:37.015: E/BluetoothChatService(28905):  at com.example.android.BluetoothChat.BluetoothChatService$ConnectedThread.run(BluetoothChatService.java:454)
04-16 08:52:37.015: D/BluetoothChatService(28905): setState() 3 -> 0
04-16 08:52:37.015: E/BluetoothChat(28905): --- ON DESTROY ---
04-16 08:52:37.015: D/BluetoothChatService(28905): start
04-16 08:52:37.015: D/BluetoothChatService(28905): setState() 0 -> 1
04-16 08:52:37.025: W/BluetoothAdapter(28905): getBluetoothService() called with no BluetoothManagerCallback
04-16 08:52:37.045: D/BluetoothChatService(28905): Socket Type: SecureBEGIN mAcceptThreadThread[Thread-9842,5,main]
04-16 08:52:37.115: W/BluetoothAdapter(28905): getBluetoothService() called with no BluetoothManagerCallback
04-16 08:52:37.125: E/BluetoothChat(28905): +++ ON CREATE +++
04-16 08:52:37.125: D/BluetoothChatService(28905): start
04-16 08:52:37.125: D/BluetoothChatService(28905): setState() 1 -> 1
04-16 08:52:37.125: D/BluetoothChatService(28905): Socket Type: InsecureBEGIN mAcceptThreadThread[Thread-9843,5,main]
04-16 08:52:37.155: E/BluetoothChat(28905): ++ ON START ++
04-16 08:52:37.155: D/BluetoothChat(28905): setupChat()
04-16 08:52:37.155: E/BluetoothChat(28905): + ON RESUME +
04-16 08:52:37.155: D/BluetoothChatService(28905): start
04-16 08:52:37.155: D/BluetoothChatService(28905): setState() 0 -> 1
04-16 08:52:37.165: W/BluetoothAdapter(28905): getBluetoothService() called with no BluetoothManagerCallback
04-16 08:52:37.165: W/BluetoothAdapter(28905): getBluetoothService() called with no BluetoothManagerCallback
04-16 08:52:37.165: D/BluetoothChatService(28905): Socket Type: SecureBEGIN mAcceptThreadThread[Thread-9844,5,main]
04-16 08:52:37.175: D/BluetoothChatService(28905): Socket Type: InsecureBEGIN mAcceptThreadThread[Thread-9845,5,main]
04-16 08:52:37.215: I/BluetoothChat(28905): MESSAGE_STATE_CHANGE: 0
04-16 08:52:37.215: I/BluetoothChat(28905): MESSAGE_STATE_CHANGE: 1
04-16 08:52:37.225: I/BluetoothChat(28905): MESSAGE_STATE_CHANGE: 1
04-16 08:52:37.225: I/BluetoothChat(28905): MESSAGE_STATE_CHANGE: 1

Answer 1

看看我的问题。 android bluetooth can't connect

看起来这是 Android 本身的问题，而不是您的代码的问题。