IoTGateway/BSP/Android/Gettingstarted/How to enable dual touch

when you have only one touch,the event will dispatch to prmry screen,when you have two touch,and want dispatch to two screen respectively,

please following in cmd line:

shell@rsb4680:/ $ su

root@rsb4680:/ # setprop persist.dual.touch true

root@rsb4680:/ # reboot

note: iic touch will dispatch to prmry screen,usb touch will dispatch to extend screen