Thanks Chensy. The problem is solved. The GPIOexport funtion is also working properly. SPI is working fine as well.

I'm trying to use the HardwareController and libfriendlyarm-hardware.so to get access to GPIO. But it comes with this error: "D/FriendlyARM-HW-Lib: Unable to open file /sys/devices/virtual/gpio/gpio62/direction" I guess the problem is with the library file which is trying to look into wron...