Android Question felUsbSerial Permission on reboot

Discussion in 'Android Questions' started by biometrics, Aug 23, 2019.

  1. biometrics

    biometrics Active Member Licensed User

    I am using a FTDI USB to serial device. It's working well with the felUsbSerial library. I have defined the device as per this post: https://www.b4x.com/android/forum/t...e-usb-serial-library.62216/page-2#post-415519

    On Android 5 I am only asked for permission once. Even after rebooting it doesn't ask for permission again.

    On Android 7 it asks for permission after each reboot.

    Is there a way to stop it from asking permission again after a reboot on Android 7?

    This is for an unattended solution so it asking for permission again makes it unusable.
     
  2. Erel

    Erel Administrator Staff Member Licensed User

    The behavior is not related to the Android version. On some devices the USB implementation is not proper. Assuming that you defined the xml file correctly then there is nothing else that you can do. Try it with a different device.
     
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