btInStream = bluetoothSocket.getInputStream();
btOutStream = bluetoothSocket.getOutputStream();
btOutStream.write(byteData); 没有报错,但设备上没有接收到数据
btInStream = bluetoothSocket.getInputStream();
btOutStream = bluetoothSocket.getOutputStream();
btOutStream.write(byteData); 没有报错,但设备上没有接收到数据
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