wählbare Header in viewForHeaderInSection swift 3.1

Question

Ich habe den folgenden Code, der Header zu 4 Spalten in einem TableView hinzufügt. Ich möchte eine Sortierung nach dem Header, auf den ein Benutzer klickt, vornehmen. Ist das möglich mit der Art, wie ich die Spaltenüberschriften erstellt habe?

func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? { 
     let v = UIView() 
     let segmentedControl = UISegmentedControl(frame: CGRect(x:3, y: 5, width: tableView.frame.width-6, height: 30)) 
     v.addSubview(segmentedControl) 
     v.backgroundColor = UIColor.white 
     segmentedControl.insertSegment(withTitle: "Name", at: 0, animated: false) 
     segmentedControl.insertSegment(withTitle: "Points", at: 1, animated: false) 
     segmentedControl.insertSegment(withTitle: "Played", at: 2, animated: false) 
     segmentedControl.insertSegment(withTitle: "Ave", at: 3, animated: false) 

     return v 
    } 

Answer 1

Ich habe Tasten an den Header wie folgt:

func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? { 
    let v = UIView() 
    let segmentedControl = UISegmentedControl(frame: CGRect(x:0, y: 5, width: tableView.frame.width-6, height: 40)) 
    v.addSubview(segmentedControl) 
    v.backgroundColor = UIColor.white 

    let btnName: UIButton = UIButton(frame: CGRect(x: 5, y: 5, width: 120, height: 30)) 
    btnName.backgroundColor = UIColor.white 
    btnName.showsTouchWhenHighlighted = true 
    btnName.layer.borderWidth = 1 
    btnName.layer.borderColor = UIColor.lightGray.cgColor 
    btnName.setTitle("Name", for: .normal) 
    btnName.setTitleColor(UIColor.blue, for: .normal) 
    btnName.setTitleColor(UIColor.red, for: .selected) 
    btnName.addTarget(self, action: #selector(buttonAction), for: .touchUpInside) 
    btnName.tag = 1 
    v.addSubview(btnName) 

    let btnPoints: UIButton = UIButton(frame: CGRect(x: 125, y: 5, width: 80, height: 30)) 
    btnPoints.backgroundColor = UIColor.white 
    btnPoints.showsTouchWhenHighlighted = true 
    btnPoints.layer.borderWidth = 1 
    btnPoints.layer.borderColor = UIColor.lightGray.cgColor 
    btnPoints.setTitle("Points", for: .normal) 
    btnPoints.setTitleColor(UIColor.blue, for: .normal) 
    btnPoints.setTitleColor(UIColor.red, for: .selected) 
    btnPoints.addTarget(self, action: #selector(buttonAction), for: .touchUpInside) 
    btnPoints.tag = 2 
    v.addSubview(btnPoints) 

    let btnPlayed: UIButton = UIButton(frame: CGRect(x: 205, y: 5, width: 80, height: 30)) 
    btnPlayed.backgroundColor = UIColor.white 
    btnPlayed.showsTouchWhenHighlighted = true 
    btnPlayed.layer.borderWidth = 1 
    btnPlayed.layer.borderColor = UIColor.lightGray.cgColor 
    btnPlayed.setTitle("Played", for: .normal) 
    btnPlayed.setTitleColor(UIColor.blue, for: .normal) 
    btnPlayed.setTitleColor(UIColor.red, for: .focused) 
    btnPlayed.addTarget(self, action: #selector(buttonAction), for: .touchUpInside) 
    btnPlayed.tag = 4 
    v.addSubview(btnPlayed) 

    let btnAve: UIButton = UIButton(frame: CGRect(x: 285, y: 5, width: 80, height: 30)) 
    btnAve.backgroundColor = UIColor.white 
    btnAve.showsTouchWhenHighlighted = true 
    btnAve.layer.borderWidth = 1 
    btnAve.layer.borderColor = UIColor.lightGray.cgColor 
    btnAve.setTitle("Ave", for: .normal) 
    btnAve.setTitleColor(UIColor.blue, for: .normal) 
    btnAve.setTitleColor(UIColor.red, for: .highlighted) 
    btnAve.addTarget(self, action: #selector(buttonAction), for: .touchUpInside) 
    btnAve.tag = 3 
    v.addSubview(btnAve) 

    return v 
} 


func buttonAction(sender: UIButton!) { 
    let btnsendtag: UIButton = sender 
    if btnsendtag.tag == 1 { 
     btnNamePressed = !btnNamePressed 
     if btnNamePressed == true 
     { 
      GlobalVar.listOf = GlobalVar.listOf.sorted(by: {$0.Name < $1.Name}) 
     } 
     else 
     { 
      GlobalVar.listOf = GlobalVar.listOf.sorted(by: {$0.Name > $1.Name}) 
     } 
    } 

    if btnsendtag.tag == 2 { 
     btnPointsPressed = !btnPointsPressed 
     if btnPointsPressed == true 
     { 
      GlobalVar.listOf = GlobalVar.listOf.sorted(by: {$0.Points < $1.Points}) 
     } 
     else 
     { 
      GlobalVar.listOf = GlobalVar.listOf.sorted(by: {$0.Points > $1.Points}) 
     } 
    } 

    if btnsendtag.tag == 3 { 
     btnPlayedPressed = !btnPlayedPressed 
     if btnPlayedPressed == true 
     { 
      GlobalVar.listOf = GlobalVar.listOf.sorted(by: {$0.Played < $1.Played}) 
     } 
     else 
     { 
      GlobalVar.listOf = GlobalVar.listOf.sorted(by: {$0.Played > $1.Played}) 
     } 
    } 

    if btnsendtag.tag == 4 { 
     btnAvePressed = !btnAvePressed 
     if btnAvePressed == true 
     { 
      GlobalVar.listOf = GlobalVar.listOf.sorted(by: {$0.Average < $1.Average}) 
     } 
     else 
     { 
      GlobalVar.listOf = GlobalVar.listOf.sorted(by: {$0.Average > $1.Average}) 
     } 
    } 

    tableView.reloadData() 
}