Android studio 蓝牙串口闪退

[忧郁的火龙果]

开发工具：Android Studio
程序来源：SDK Samples下面api 22子目录下的BluetoothChat，运行在魅蓝Note2上，程序经常刚点开就闪退，重启一下就好了，本人初学，不知从何入手，希望各位不吝赐教，多谢！

[huangxiaohu_coder]

logcat有什么打印吗？

[忧郁的火龙果]

12-20 20:39:29.760 15629-15687/? E/AndroidRuntime: FATAL EXCEPTION: AcceptThreadSecure
12-20 20:39:29.760 15629-15687/? E/AndroidRuntime: Process: com.example.android.bluetoothchat, PID: 15629
12-20 20:39:29.760 15629-15687/? E/AndroidRuntime: java.lang.NullPointerException: Attempt to invoke virtual method 'android.bluetooth.BluetoothSocket android.bluetooth.BluetoothServerSocket.accept()' on a null object reference
12-20 20:39:29.760 15629-15687/? E/AndroidRuntime: at com.example.android.bluetoothchat.BluetoothChatService$AcceptThread.run(BluetoothChatService.java:326)
12-20 20:39:29.763 15629-15629/? E/BluetoothSocket: bindListen, fail to get port number, exception: java.io.IOException: read failed, socket might closed or timeout, read ret: -1
12-20 20:39:29.764 15629-15629/? E/BluetoothChatService: Socket Type: Insecurelisten() failed

[忧郁的火龙果]

跪求指点！

[忧郁的火龙果]

没找到原因，直接去掉server部分的代码，因为我不许要。有待后来人调查吧。