ios - Call a function in another class that read a dynamic variable via IBaction -

i'm trying call function stored on class:

viewcontroller

@ibaction func refreshcomments() {     commentstableviewcontroller().refresh() } 

commentstableviewcontroller

 var variable2 = "0"   func refresh(){      print(variable2)   } 

this works great, in case value of variable not static value, i've receive dynamically value, , know problem in line :

//commentstableviewcontroller().refresh() 

because commentstableviewcontroller() - class constructor , each time call commentstableviewcontroller() return new instance/object of commentstableviewcontroller class, default values of course.

so i'm stuck @ point , don't know how solve this. i've tried transform func refresh() class funcrefresh() , call way :

@ibaction func refreshcomments() { commentstableviewcontroller.refresh() } 

but in way got error i'm not able read variable2

print(variable2) - instance member 'variable2'cannot used on type 'commentstableviewcontroller'

any ideas?

edit follows hierarchy:

handling controller controller in container bit difficult. try fill container programaticly. otherwise not have controll on controller.

you work notifications, notifications shouldnt used 1 one communication.

create programaticly

• you have container , link iboutlet maincontroller.
• you create property commentsviewcontroller
• in storyboard give controller storyboardidentifier
• in viewdidload of main controller instanciate commentscontroller property controller storyboard.
• add controller childviewcontroller maincontroller , add view commentsviewcontroller containerview
• could need set view.frame commentsviewcontroller same containerview

now have controller property , can run public function.

sorry no code example. got not time :)

notifcations

your main view controller send notification specific name , commentsviewcontroller observer notification , make action when receiving it.

nsnotificationcenter.defaultcenter().postnotificationname(name:"yournameyoulike") 

in commentsviewcontroller observe notification.

nsnotificationcenter.defaultcenter().addobserverforname(name:"thesamenamethatyourpostnotificationdiduse", object: nil, queue: mainqueue) { [weak self] in      guard s = self else { return }      s.reload() }