Changing IBOutlet UIObject in ViewController from another class using Objective C (iOS) -

i'm beginner in ios development , cannot part working. objective simple: have class named tcpcomm connects server , sends data periodically. in storyboard have view containing buttons , textfield. idea change state of iboutlet uibuttons , uitextfield based on received data server (from class).

i have tried using properties in different ways none of them worked.

any on best way please?

the best way achieve using delegates.

in tcpcomm header file declare protocol

@protocol tcpcommdelegate <nsobject> -(void)callbackmethod; @end 

in interface declare public property

@property (nonatomic, weak) id<tcpcommdelegate> delegate; 

now, call method declared in protocol whenever received data in tcpcomm class below

if(delegate && [delegate respondstoselector:@selector(callbackmethod)])         [delegate performselector:@selector(callbackmethod)]; 

now, in viewcontroller class make sure imported tcpcomm class , accepts tcpcommdelegate protocol below

@interface yourviewcontroller : uiviewcontroller <tcpcommdelegate> 

in viewdidload method of viewcontroller create instance of tcpcomm class , assign delegate property self

tcpcomm *tcpcomm = [[tcpcomm alloc]init]; tcpcomm.delegate = self; 

that's, can implement callbackmethod body in viewcontroller , change properties of whatever uiobjects want. method called whenever there new data fetched tcpcomm class, if have called 3rd code snippet @ right time i.e when data fetch completed