unzip copy player.img&player folder paste in
com.rockstargames.gtasa\files\texdb
Or
if skin not work then download gta.dat file from here
Download Link-
https://www.dropbox.com/s/xnoxsiupctx7oyw/gta.dat?dl=0

and put gta.dat in
com.rockstargames.gtasa\files\data\HERE!