从MySql数据库获取数据并将其显示在“UITextview”上

i'm trying now for a two weeks to fix an issue with my code and just got crazy already trying to fix it so here i'm here. I have a registration controller where I succsufully sucseded to upload users data into a database with their "macaddress" info to.Now I heard apple changed macaddress and it whont be avilable any more but this is my code and its working for me for now so if you can recomend on something else its will be good to.My main issue "here" is that i'm not able to display my users data back I need the data to be back to the IPhone by each particular user then I use "macadress" to get users Device ID but can't get it back into a "UITextView" how can I do that? what methods to use to display it the right way? Should I keep using "macaddress" or is there a batter way to get save users in a database? this is my code:i'm trying now for a two weeks to fix an issue