Felipe Herranz

@tihomirleka Thanks for the PR. I will check it out as soon as possible

It's an Android Studio project since 2015. Maybe it's because problems with a particular version of Gradle?

@WangLiang85 Maybe you should ask in the other library issue tracker. This is only for issues related with this library

Hi @pcarff What kind of USB to serial that RFID reader uses. Maybe it is not supported.

Hi! @podarok I am afraid you need a rooted device for that. This library implements Usb to serial drivers in the user space precisely because that limitation. Using a rooted...

@podarok By the way it looks like you are using a X96. We've been evaluating some of them in where I work and it should be easy to have them...

Hi @Scott12334 It is a NullPointerException because both device and usbConnection are null. [Please use this Service as an example](https://github.com/felHR85/UsbSerial/blob/master/example/src/main/java/com/felhr/serialportexample/UsbService.java). findSerialPortDevice() method is used to properly handle the device variable

@Scott12334 For Android beginners I recommend using the example as a starting point and make your changes there.

@Scott12334 And even the Activity if you are not so sure.

UsbSerialDevice serial = UsbSerialDevice.createUsbSerialDevice(device, usbConnection); This line can't work because both arguments are null. You are declaring it when the service class is init and thats the reason why both...