swift - How to save segmented control choice -

i have added segmented control in project set notification frequency (like daily, weekly, ecc..). don't understand how save user choice , how set notification on choice. have addcontroller user can insert reminders , in controller want set frequency notification repeat. code is:

@ibaction func salva(sender: uibutton) {     if fieldnomemedicina.text.isempty &&         fielddata.text.isempty &&         fielddosaggio.text.isempty{             //alertview che avverte l'utente che tutti campi sono obbligatori             //return      }      var therapy = pillsmodel(nomemedicinain: fieldnomemedicina.text,         dosaggioin : fielddosaggio.text,         datain: fielddata.text         )      profilo.therapyarra.append(therapy)     datamanager.sharedinstance.salvaarray()     datamanager.sharedinstance.detail.pillstable.reloaddata()      dismissviewcontrolleranimated(true, completion: nil)      let stringdate = fielddata.text//get time string      //format date     var dateformatter = nsdateformatter()     dateformatter.dateformat = "dd-mm-yyyy hh:mm" //format style. browse online format fits needs.     var date = dateformatter.datefromstring(stringdate)     //date nsdate.       var localnotification = uilocalnotification()     localnotification.category = "first_category"     localnotification.firedate = date     localnotification.alertbody = "take medicine:" + " " + fieldnomemedicina.text + " " + fielddosaggio.text     localnotification.timezone = nstimezone.defaulttimezone()     localnotification.applicationiconbadgenumber = uiapplication.sharedapplication().applicationiconbadgenumber + 1       uiapplication.sharedapplication().schedulelocalnotification(localnotification)   }  @ibaction func frequencycontrol(sender: uisegmentedcontrol) {      if(segmentedcontrol.selectedsegmentindex == 0)     {         notification.repeatinterval = 0;     }     else if(segmentedcontrol.selectedsegmentindex == 1)     {         notification.repeatinterval = .calendarunitday;     }     else if(segmentedcontrol.selectedsegmentindex == 2)     {         notification.repeatinterval = .calendarunitweekday;      }     else if(segmentedcontrol.selectedsegmentindex == 3)     {         notification.repeatinterval = .calendarunitmonth;      }     else if(segmentedcontrol.selectedsegmentindex == 4)     {         notification.repeatinterval = .calendarunitminute;      }  }   func drawashape(notification:nsnotification){     var view:uiview = uiview(frame:cgrectmake(10, 10, 100, 100))     view.backgroundcolor = uicolor.redcolor()      self.view.addsubview(view)  }  func showamessage(notification:nsnotification){     var message:uialertcontroller = uialertcontroller(title: "a notification message", message: "hello there", preferredstyle: uialertcontrollerstyle.alert)     message.addaction(uialertaction(title: "ok", style: uialertactionstyle.default, handler: nil))      self.presentviewcontroller(message, animated: true, completion: nil)  } 

i have error: use of unresolved identifier 'notification'in func frequencycontrol.

your problem create localnotification after user clicks button (which design choice). means can't store information in before, isn't necessary - can ask uisegmentedcontrol current value is.

you need transfer block of code:

if(segmentedcontrol.selectedsegmentindex == 0) {     notification.repeatinterval = 0; } ... 

inside salva function. , while you're @ it, convert if statements switch - cleaner. like:

var localnotification = uilocalnotification() switch segmentedcontrol.selectedsegmentindex {     case 0:         localnotification.repeatinterval = 0;     case 1:         localnotification.repeatinterval = .calendarunitday;     ... }