swift - Accessing information from another viewController -

i new swift , trying repopulate pickerview using array of names class. have class notes creates notes , each note has name/title, trying access names/title , put them in pickerview, can me.

import uikit var allnotes: [note] = [] var currentnoteindex: int = -1 var notetable: uitableview? let kallnotes:string = "notes"  class note: nsobject {     var date:string     var note:string     var name:string      override init()     {         date = nsdate().description         name = ""         note = ""     }      func dictionary() -> nsdictionary     {         return ["note": note, "date": date, "name": name]     } 

i have 2 different pickerview , 1 works it's 1 names doesn't work.

override func viewdidload() {     super.viewdidload()      filenamepicker.datasource = self     filenamepicker.delegate = self      gradepicker.datasource = self     gradepicker.delegate = self  }   func pickerview(_ pickerview: uipickerview, numberofrowsincomponent component: int) -> int {     if pickerview == gradepicker     {         return grades.count     }     else     {         return allnotes.count     }  }  func pickerview(_ pickerview: uipickerview, titleforrow row: int, forcomponent component: int) -> string? {     if pickerview == gradepicker     {        return grades[row]     }      else     {          //this problem is, don't know how fix it.         let namefiles = allnotes[currentnoteindex].name          return namefiles[row]     }  }  func numberofcomponents(in pickerview: uipickerview) -> int {     return 1 } 

namefiles accessing name note.

namefiles[row] doesn't work because namefiles not array.

if want return string, return namefiles. check first make sure namefiles has value, though!