ios - How to send clicked item of Table View to other view controller when datasource and delegate are separate from View Controller -

i beginner ios coming android background , learned table view (for me it's android listview). trying separate data source & delegate view controller. found tutorials on how stuck @ figuring out how send clicked item view controller. code below:

class picturetableviewcontroller: uiviewcontroller {       @iboutlet weak var picturetableview: uitableview!      private let picsdatasource: picturesdatasource      required init?(coder adecoder: nscoder) {         self.picsdatasource = picturesdatasource()         super.init(coder: adecoder)     }      override func viewdidload() {         super.viewdidload()          picturetableview.datasource = picsdatasource         picturetableview.reloaddata()         picturetableview.delegate = picsdatasource     } }  class picturesdatasource: nsobject, uitableviewdatasource, uitableviewdelegate{      private var picturemodels = [picturemodel]()      override init(){         let picmodelsdatacontroller = picturemodelsdatacontroller()         picturemodels = picmodelsdatacontroller.picturemodels     }       func numberofsections(in tableview: uitableview) -> int {         return 1     }      func tableview(_ tableview: uitableview, numberofrowsinsection section: int) -> int {         return picturemodels.count     }      func tableview(_ tableview: uitableview, cellforrowat indexpath: indexpath) -> uitableviewcell {         let cell = tableview.dequeuereusablecell(withidentifier: string(describing: picturecell.self)) as! picturecell          let picmodel = picturemodels[indexpath.row]         cell.picturename = picmodel.picturename         cell.imageitem = picmodel.imageitem          return cell     }      func tableview(_ tableview: uitableview, didselectrowat indexpath: indexpath) {           //1 - try loading "detail" view controller , typecasting detailviewcontroller         if let detailviewcontroller = storyboard.instantiateviewcontroller(withidentifier: "picturedetailview") as? picturedetailviewcontroller {              //2 - success! set selecteimage property             detailviewcontroller.selectedimgname = picturemodels[indexpath.row].picturename              //3 - push onto navigation controller             navigationcontroller?.pushviewcontroller(detailviewcontroller, animated: true)         }     }  }      

error in: func tableview(_ tableview: uitableview, didselectrowat indexpath: indexpath){ }. since "storyboard" & "navigationcontroller" not available in picturesdatasource class, how can send clicked item(picture name) detailsviewcontroller

there stackoverflow answers separating data source , delegate did not solve problem.

using: xcode 8.3 beta 6

you can include reference main view controller @ table view events handler. below playground code derived example:

import uikit  // mark: - model  struct picture {   let title: string   let image: uiimage }  struct picturemodelsdatasource {   let pictures = [     picture(title: "exampletitle", image: uiimage(named: "exampleimage")!),     picture(title: "exampletitle", image: uiimage(named: "exampleimage")!)   ] }  // mark - view  class picturecell: uitableviewcell {   @iboutlet weak var picturetitlelabel: uilabel!   @iboutlet weak var pictureimage: uiimageview! }  // mark: - controller  class picturetableviewcontroller: uiviewcontroller {    // mark: - properties    @iboutlet weak var picturetableview: uitableview!    private var picturelistcontroller: picturelistcontroller?    // mark: - view lifecycle    override func viewdidload() {     super.viewdidload()     picturelistcontroller = picturelistcontroller()     picturelistcontroller?.viewcontroller = self     picturetableview.datasource = picturelistcontroller     picturetableview.delegate = picturelistcontroller     picturetableview.reloaddata()   } }  class picturedetailviewcontroller: uiviewcontroller {   var selectedpicturetitle: string? }  class picturelistcontroller: nsobject, uitableviewdatasource, uitableviewdelegate {    // mark: - properties    weak var viewcontroller: picturetableviewcontroller?    private let pictures: [picture] = {     let picturemodelsdatasource = picturemodelsdatasource()     return picturemodelsdatasource.pictures   }()    // mark: - view setup    func numberofsections(in tableview: uitableview) -> int {     return 1   }    // mark: - event handling    func tableview(_ tableview: uitableview, numberofrowsinsection section: int) -> int {     return pictures.count   }    func tableview(_ tableview: uitableview, cellforrowat indexpath: indexpath) -> uitableviewcell {     guard let cell = tableview.dequeuereusablecell(withidentifier: string(describing: picturecell.self)) as? picturecell else {       return uitableviewcell()     }      let picture = pictures[indexpath.row]     cell.picturetitlelabel.text = picture.title     cell.pictureimage.image = picture.image      return cell   }    func tableview(_ tableview: uitableview, didselectrowat indexpath: indexpath) {     let picturetitle = pictures[indexpath.row].title     let storyboard = uistoryboard(name: "examplestoryboard", bundle: nil)     if let picturedetailviewcontroller = storyboard.instantiateviewcontroller(withidentifier: "picturedetailview") as? picturedetailviewcontroller {       picturedetailviewcontroller.selectedpicturetitle = picturetitle       viewcontroller?.navigationcontroller?.pushviewcontroller(picturedetailviewcontroller, animated: true)     }   } }