Playerprefs not working on android

I am making a shop for my game where a player can buy stuff.when he buys an item the value of the item in playerprefs is incremented by once.this works correctly in the editor but stays zero in android.i hav made a keystore and have also added playerprefs.save() after every operation but this does not seem to make it work.please help.here a code snippet:- //buy button

   if(GUI.Button (Rect (originalWidth -160,originalHeight -100,70,30), "BUY"+":Rs "+cost.ToString()))
         {
          if(money>=cost)
           money-=cost;
           buy=true;
           
          }

//if buy =true

  temp2=PlayerPrefs.GetInt("kite1");
        
         temp2+=temp1;
       PlayerPrefs.SetInt("kite1",temp2);
        PlayerPrefs.Save();

here temp 1 is the no of times the user presses the button and temp 2 is the variable taht storest he value of the playerpref.