Hey All,
I have an UIPickerview which i fill from a JSON file (on my webserver). When an item is selected i need to fill an second UIPIckerview from a JSON File (on my webserver)
How can i initiate the population of my second UIPickerView after the first one gets populated? (I do not use storyboards)
class AddIntController: UIViewController, UIPickerViewDataSource, UIPickerViewDelegate{
var data: [AnyObject] = []
var picker = UIPickerView()
var data2: [AnyObject] = []
var picker2 = UIPickerView()
lazy var scrollView: UIScrollView = {
let view = UIScrollView()
view.translatesAutoresizingMaskIntoConstraints = false
view.contentSize.height = 2000
view.backgroundColor = UIColor.white
return view
}()
let mainMenu: UIButton = {
let image = UIImage(named: "menu.PNG")
let l = UIButton(type: .system)
l.addTarget(self ,action: #selector(openMenu), for: .touchUpInside)
l.setBackgroundImage(image, for: .normal)
return l
}()
let profileView: UIImageView = {
let p = UIImageView()
p.image = UIImage(named: "default.png")
p.layer.borderWidth = 14.0
p.clipsToBounds = true
p.layer.borderColor = UIColor.white.cgColor
return p
}()
let memberTable: UITableView = {
let m = UITableView()
m.backgroundColor = orangeBanner
m.separatorStyle = .none
return m
}()
let memberInfoTable: UITableView = {
let m = UITableView()
m.backgroundColor = UIColor.white
m.separatorStyle = .none
return m
}()
let cell1: UITableViewCell = {
let m = UITableViewCell()
m.backgroundColor = UIColor.white
return m
}()
let cell2: UITableViewCell = {
let m = UITableViewCell()
m.backgroundColor = grayBanner
return m
}()
let mijnProfielField: UILabel = {
let t = UILabel()
t.text = "Mijn profiel"
t.font = UIFont.boldSystemFont(ofSize: 18.0)
t.textColor = UIColor.white
return t
}()
let interesseButton: UIButton = {
let h = UIButton()
h.setTitle(" Interesses ", for: .normal)
h.setTitleColor(UIColor.gray, for: .normal)
h.contentHorizontalAlignment = UIControl.ContentHorizontalAlignment.left
h.titleLabel?.font = h.titleLabel?.font.withSize(16)
h.addTarget(self ,action: #selector(openInteresses), for: .touchUpInside)
return h
}()
let compButton: UIButton = {
let h = UIButton()
h.setTitle("Competenties", for: .normal)
h.setTitleColor(UIColor.gray, for: .normal)
h.contentHorizontalAlignment = UIControl.ContentHorizontalAlignment.left
h.titleLabel?.font = h.titleLabel?.font.withSize(16)
h.addTarget(self ,action: #selector(openCompetences), for: .touchUpInside)
return h
}()
let beoorButton: UIButton = {
let h = UIButton()
h.setTitle("Beoordelingen", for: .normal)
h.setTitleColor(UIColor.gray, for: .normal)
h.contentHorizontalAlignment = UIControl.ContentHorizontalAlignment.left
h.addTarget(self ,action: #selector(openBeoordeling), for: .touchUpInside)
h.titleLabel?.font = h.titleLabel?.font.withSize(16)
return h
}()
let underMember=UIView()
let parentView : UITextField = {
let textView = UITextField()
textView.translatesAutoresizingMaskIntoConstraints = false
textView.text = "Groep"
textView.backgroundColor = grayBanner
textView.textColor = UIColor.black
textView.heightAnchor.constraint(equalToConstant: 50.0).isActive = true
textView.addTarget(self, action: "textFieldDidChange:", for: UIControl.Event.editingChanged)
return textView
}()
let parentView2 : UITextField = {
let textView = UITextField()
textView.translatesAutoresizingMaskIntoConstraints = false
textView.text = "Rubriek"
textView.backgroundColor = grayBanner
textView.textColor = UIColor.black
textView.heightAnchor.constraint(equalToConstant: 50.0).isActive = true
return textView
}()
override func viewDidLoad() {
super.viewDidLoad()
setupScrollView()
view.backgroundColor = .white
picker.delegate = self
picker.dataSource = self
picker2.delegate = self
picker2.dataSource = self
parentView.inputView = picker
parentView2.inputView = picker2
//get the values from sql/Json
let url = NSURL(string: "https://gipaa.nl/com_json.php")
let data = NSData(contentsOf: url! as URL)
var tmpValues = try! JSONSerialization.jsonObject(with: data! as Data, options: JSONSerialization.ReadingOptions.mutableContainers) as! NSArray
tmpValues = tmpValues.reversed() as NSArray
reloadInputViews()
for candidate in tmpValues {
if let cdict = candidate as? NSDictionary {
//fullName is the column name in sql/json
let names = cdict["name"]
self.data.append(names! as AnyObject)
}
}
}
private func setupScrollView(){
view.addSubview(scrollView)
scrollView.topAnchor.constraint(equalTo: view.topAnchor).isActive = true
scrollView.bottomAnchor.constraint(equalTo: view.bottomAnchor).isActive = true
scrollView.leftAnchor.constraint(equalTo: view.leftAnchor).isActive = true
scrollView.rightAnchor.constraint(equalTo: view.rightAnchor).isActive = true
scrollView.keyboardDismissMode = .onDrag
scrollView.isScrollEnabled = true
// Do any additional setup after loading the view
let imageView = UIImageView(frame: CGRect(x: 10, y: 5, width: 150, height: 50))
imageView.image = UIImage(named: "main.PNG")
scrollView.addSubview(imageView)
scrollView.addSubview(mainMenu)
mainMenu.translatesAutoresizingMaskIntoConstraints = false
mainMenu.topAnchor.constraint(equalTo: scrollView.topAnchor, constant: 5).isActive = true
mainMenu.rightAnchor.constraint(equalTo: view.rightAnchor, constant: -16).isActive = true
mainMenu.heightAnchor.constraint(equalToConstant: 50).isActive = true
mainMenu.widthAnchor.constraint(equalToConstant: 50).isActive = true
view.addSubview(memberTable)
memberTable.translatesAutoresizingMaskIntoConstraints = false
memberTable.topAnchor.constraint(equalTo: mainMenu.bottomAnchor, constant: 10).isActive = true
memberTable.leftAnchor.constraint(equalTo: view.leftAnchor, constant: 0).isActive = true
memberTable.rightAnchor.constraint(equalTo: view.rightAnchor, constant: 0).isActive = true
memberTable.heightAnchor.constraint(equalToConstant: 50).isActive = true
view.addSubview(mijnProfielField)
mijnProfielField.translatesAutoresizingMaskIntoConstraints = false
mijnProfielField.topAnchor.constraint(equalTo: mainMenu.bottomAnchor, constant: 5).isActive = true
mijnProfielField.rightAnchor.constraint(equalTo: view.rightAnchor, constant: -10).isActive = true
mijnProfielField.widthAnchor.constraint(equalToConstant: 120).isActive = true
mijnProfielField.heightAnchor.constraint(equalToConstant: 60).isActive = true
view.addSubview(interesseButton)
interesseButton.translatesAutoresizingMaskIntoConstraints = false
interesseButton.topAnchor.constraint(equalTo: mijnProfielField.bottomAnchor, constant: 10).isActive = true
interesseButton.leftAnchor.constraint(equalTo: view.leftAnchor, constant: 10).isActive = true
interesseButton.heightAnchor.constraint(equalToConstant: 30).isActive = true
view.addSubview(compButton)
compButton.translatesAutoresizingMaskIntoConstraints = false
compButton.topAnchor.constraint(equalTo: mijnProfielField.bottomAnchor, constant: 10).isActive = true
compButton.centerXAnchor.constraint(equalTo: view.centerXAnchor, constant: -10).isActive = true
compButton.heightAnchor.constraint(equalToConstant: 30).isActive = true
view.addSubview(beoorButton)
beoorButton.translatesAutoresizingMaskIntoConstraints = false
beoorButton.topAnchor.constraint(equalTo: mijnProfielField.bottomAnchor, constant: 10).isActive = true
beoorButton.rightAnchor.constraint(equalTo: view.rightAnchor, constant: -10).isActive = true
beoorButton.heightAnchor.constraint(equalToConstant: 30).isActive = true
view.addSubview(underMember)
underMember.translatesAutoresizingMaskIntoConstraints = false
underMember.topAnchor.constraint(equalTo: beoorButton.bottomAnchor, constant: 15).isActive = true
underMember.leftAnchor.constraint(equalTo: view.leftAnchor, constant: 16).isActive = true
underMember.rightAnchor.constraint(equalTo: view.rightAnchor, constant: -16).isActive = true
underMember.heightAnchor.constraint(equalToConstant: 2).isActive = true
underMember.backgroundColor=grayBanner
// Add rounded corners to UIView
underMember.layer.cornerRadius=0
// Add border to UIView
view.addSubview(parentView)
parentView.translatesAutoresizingMaskIntoConstraints = false
parentView.topAnchor.constraint(equalTo: underMember.bottomAnchor, constant: 15).isActive = true
parentView.leftAnchor.constraint(equalTo: view.leftAnchor, constant: 16).isActive = true
parentView.rightAnchor.constraint(equalTo: view.rightAnchor, constant: -16).isActive = true
view.addSubview(parentView2)
parentView2.translatesAutoresizingMaskIntoConstraints = false
parentView2.topAnchor.constraint(equalTo: parentView.bottomAnchor, constant: 15).isActive = true
parentView2.rightAnchor.constraint(equalTo: view.rightAnchor, constant: -16).isActive = true
parentView2.leftAnchor.constraint(equalTo: view.leftAnchor, constant: 16).isActive = true
}
@objc func openBeoordeling(){
let beoordeling = BeoordelingController()
present(beoordeling, animated: true, completion: nil)
}
@objc func openInteresses(){
let interesses = InteressesController()
present(interesses, animated: true, completion: nil)
}
@objc func openCompetences(){
let comp = CompetencesController()
present(comp, animated: true, completion: nil)
}
@objc func openMenu(){
let menu = MenuController()
present(menu, animated: true, completion: nil)
}
func numberOfComponents(in pickerView: UIPickerView) -> Int {
return 1
}
func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
if pickerView == picker {
return data.count
}else{
return data2.count
}
}
func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
if pickerView == picker {
parentView.text = data[row] as! String
}else {
parentView2.text = data2[row] as! String
}
}
func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String! {
if pickerView == picker {
return data[row] as! String
}else{
return data2[row] as! String
}
}
func textFieldDidChange(textField: UITextField) {
print("test")
print("textField: \(parentView.text!)")
}
}So, you will do this loading in
func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
if pickerView == picker {
parentView.text = data[row] as! String
// Load here picker 2 datasource
} else {
parentView2.text = data2[row] as! String
}
}What is it exactly you don't know how to do ?
