求大神解答：蓝牙开发问题

BluetoothSocket yscoket = device
.createRfcommSocketToServiceRecord(MY_UUID);
yscoket.connect();
InputStream mmInStream = yscoket.getInputStream();
OutputStream mmOutStream =yscoket.getOutputStream();
int Recv = mmInStream.available();
if (Recv!= 0)
mmInStream.read(buffer);
运行到mmInStream.available();时，直接卡住程序无响应，用的华为G610机器，解释不通。P6的可以正常执行；
求大神帮助。。