Accessing raspberrypi3b GPIO from (Emteria.os) Android os

[gotronics]

it buids without errors but the app clashes when running.
even wiringPI it just clashes.
W libLightControl.so: QIODevice::write (QFile, "/sys/class/gpio/export"): device not open
W libLightControl.so: QIODevice::write (QFile, "/sys/class/gpio/gpio24/value"): device not open
W libLightControl.so: cannot open "/sys/class/gpio/gpio24/direction"
W libLightControl.so: QIODevice::write (QFile, "/sys/class/gpio/gpio5/value"): device not open
W libLightControl.so: QIODevice::write (QFile, "/sys/class/gpio/gpio24/value"): device not open
W libLightControl.so: QIODevice::write (QFile, "/sys/class/gpio/gpio25/value"): device not open.

pliease assist me

[SGaist]

Hi,

Did you check that you have proper access rights ?

[gotronics]

thank you SGaist for the response
i have properly accessed the superuser permission
i no longer get the following messages it only crashes
W libLightControl.so: QIODevice::write (QFile, "/sys/class/gpio/export"): device not open
W libLightControl.so: QIODevice::write (QFile, "/sys/class/gpio/gpio24/value"): device not open
W libLightControl.so: cannot open "/sys/class/gpio/gpio24/direction"
W libLightControl.so: QIODevice::write (QFile, "/sys/class/gpio/gpio5/value"): device not open
W libLightControl.so: QIODevice::write (QFile, "/sys/class/gpio/gpio24/value"): device not open
W libLightControl.so: QIODevice::write (QFile, "/sys/class/gpio/gpio25/value"): device not open.

[SGaist]

What is the stack trace ?