ios - How to set title for row in PickerView in Swift 3? -


i need give title rows according array don't know how this. i'm new ios.

class viewcontroller: uiviewcontroller , uipickerviewdelegate, uipickerviewdatasource{      @iboutlet weak var pickerview: uipickerview!     @iboutlet weak var label: uilabel!     var names: array<string>?     var department: array<string>?     override func viewdidload() {         super.viewdidload()         // additional setup after loading view, typically nib.         names = ["vineeta", "shubham" ,"anand", "vivek", "akshay", "harshit", "vikas", "prasoon", "sunil"]         department = ["ios","angular", ".net", "ios","ios", ".net", "android","android", "angular"]     }      override func didreceivememorywarning() {         super.didreceivememorywarning()         // dispose of resources can recreated.     }      func numberofcomponents(in pickerview: uipickerview) -> int {         return 2     }     func pickerview(_ pickerview: uipickerview, numberofrowsincomponent component: int) -> int {         return 9     }      func pickerview(_ pickerview: uipickerview, titleforrow row: int, forcomponent component: int) -> string? {         if component == 0 {             [names o]         }     }   }

use code -

   func pickerview(_ pickerview: uipickerview, numberofrowsincomponent component: int) -> int {     if component == 0 {         return names?.count     }     else     return department?.count  }  func pickerview(_ pickerview: uipickerview, titleforrow row: int, forcomponent component: int) -> string? {     if component == 0 {         return names?[row]     }     else     {         return department?[row]     } }

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