uitableview - Swift 3 - Custom TableViewCell dynamic height - programatically -

i trying setup dynamic height custom table view cell...programatically.

there many tutorials doing inside storyboard, pure programmatic solution:

class customtableviewcell: uitableviewcell {      var container: uiview = {         let view = uiview()         view.translatesautoresizingmaskintoconstraints =  false         return view     }()      override func awakefromnib() {         super.awakefromnib()          self.setupview()         self.addconstraints()     }      func setupview() {         self.contentview.addsubview(self.container)         self.container.backgroundcolor = uicolor.cyan     }      func addconstraints() {         self.container.leadinganchor.constraint(equalto: self.contentview.leadinganchor, constant: 0).isactive = true         self.container.trailinganchor.constraint(equalto: self.contentview.trailinganchor, constant: 0).isactive = true         self.container.topanchor.constraint(equalto: self.contentview.topanchor, constant: 0).isactive = true         self.container.bottomanchor.constraint(equalto: self.contentview.bottomanchor, constant: 0).isactive = true         self.container.heightanchor.constraint(equaltoconstant: 200)     }      override func setselected(_ selected: bool, animated: bool) {         super.setselected(selected, animated: animated)     }  } 

and view registering it:

class customviewcontroller: uiviewcontroller {      var data: [post] = []      let tableview: uitableview = {         let tableview = uitableview()         tableview.translatesautoresizingmaskintoconstraints =  false         return tableview     }()      override func viewdidload() {         super.viewdidload()          self.setupview()         self.addconstraints()         self.getdata()     }      override func didreceivememorywarning() {         super.didreceivememorywarning()     }      func setupview() {         self.view.addsubview(self.tableview)         self.tableview.delegate = self         self.tableview.datasource = self         self.tableview.register(uinib(nibname: "customtableviewcell", bundle: nil), forcellreuseidentifier: "cellcustom")         self.tableview.estimatedrowheight = 100         self.tableview.rowheight = uitableviewautomaticdimension     }      func addconstraints() {         self.tableview.leadinganchor.constraint(equalto: self.view.leadinganchor, constant: 40).isactive = true         self.tableview.trailinganchor.constraint(equalto: self.view.trailinganchor, constant: -40).isactive = true         self.tableview.topanchor.constraint(equalto: self.view.topanchor, constant: 40).isactive = true         self.tableview.bottomanchor.constraint(equalto: self.view.bottomanchor, constant: -40).isactive = true     }      func getdata() {         // networking stuff     }  }  extension customviewcontroller: uitableviewdelegate {  }  extension streamviewcontroller: uitableviewdatasource {      func numberofsections(in tableview: uitableview) -> int {         return 1     }      func tableview(_ tableview: uitableview, numberofrowsinsection section: int) -> int {         return data.count     }      func tableview(_ tableview: uitableview, cellforrowat indexpath: indexpath) -> uitableviewcell {         let cell = tableview.dequeuereusablecell(withidentifier: "cellcustom", for: indexpath) as! customtableviewcell          return cell     }  } 

i trying resize custom tableview cell bases on height constraint:

self.container.heightanchor.constraint(equaltoconstant: 200) 

but not work.. custom tableview cell stays @ "44"..

anybody tell me wrong pure programmtic solution?

thanks , greetings

the problem seems height constraint not active

func addconstraints() {     ...     self.container.heightanchor.constraint(equaltoconstant: 200) } 

thats why uitableviewautomaticdimension not work.

change self.container.heightanchor.constraint(equaltoconstant: 200).isactive = true , should work