I have the following swift file which controls a xib file
import UIKit
protocol SelectProfile: class {
func selectionUp(id: Int, selected: Bool)
}
class Component: UIView {
#IBOutlet weak var name: UILabel!
#IBOutlet weak var selection: UIView!
var selected: Bool = false
var profileId: Int = 6
weak var delegate: SelectProfile?
#IBAction func selProfile(_ sender: Any) {
selected = !selected
selection.isHidden = !selected
delegate?.selectionUp(id: profileId, selected: selected)
}
let nibName = "Component"
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
commonInit()
}
override init(frame: CGRect) {
super.init(frame: frame)
commonInit()
}
func commonInit() {
guard let view = loadViewFromNib() else { return }
view.frame = self.bounds
self.addSubview(view)
selection.isHidden = true
name.text = String(profileId)
}
func loadViewFromNib() -> UIView? {
let nib = UINib(nibName: nibName, bundle: nil)
return nib.instantiate(withOwner: self, options: nil).first as? UIView
}
}
In my UIViewController where I want to interact with the component I have the following code (shortened for brevity)
import UIKit
class Home: UIViewController, SelectProfile {
#IBOutlet weak var profileComponent: Component!
func selectionUp(id: Int, selected: Bool) {
print(id, selected)
}
override func viewDidLoad() {
profileComponent.delegate = self
profileComponent.profileId = 2
}
}
My delegate works nicely and I'm able to change the values for IBOutlets but I can't pass a value to variables. This line doesn't pass the data to my xib profileComponent.profileId = 2.
It seems like I have an issue with initialization of the xib but I don't know how to fix it.
The viewDidLoad of controller is called after view's init, so when you change profileId as you do, it is changed, but not reflected anywhere.
I assume the following, at least, missed:
var profileId: Int = 6 {
didSet {
name.text = String(profileId)
// call delegate here if needed as well
}
}
Related
I am trying to add MultipleAnswerView to the main VC scrollview if the picker's first value is selected. But so far it does not add or do anything to VC. the value of picker is working correctly and I can go through .addSubview but after this line, it does not go inside MultipleAnswerView
class AddQuestionViewController: BaseViewController {
var pickerView = UIPickerView()
#IBOutlet weak var scrollView: UIScrollView!
override func viewDidLoad() {
super.viewDidLoad()
self.setupDefaultViews()
}
extension AddQuestionViewController: UIPickerViewDelegate, UIPickerViewDataSource {
func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
surveyTypeTextField.text = surveyTypes[row]
surveyTypeTextField.resignFirstResponder()
setupDefaultViews()
setupViews()
}
}
private func setupViews() {
if surveyTypeTextField.text == surveyTypes[0] {
if let view = multipleAnswerView as MultipleAnswerView? {
view.parentVC = self
self.scrollView.addSubview(view)
}
}
}
This is MultipleAnswerView which I try to add to VC with .addSubview
class MultipleAnswerView: UIView, SurveyAnswerViewDelegate, UITextFieldDelegate {
var parentVC: AddQuestionViewController!
public var delegate: SurveyAnswerViewDelegate?
#IBOutlet weak var answerLabel: UILabel!
public var nib = UINib(nibName: "MultipleAnswerView", bundle: Bundle.main)
override func awakeFromNib() {
setupMultipleAnswerView()
}
override init(frame: CGRect) {
super.init(frame: frame)
}
public convenience init(nib: UINib) {
self.init()
self.nib = nib
setupMultipleAnswerView()
}
required public init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
}
override func layoutSubviews() {
super.layoutSubviews()
//manually set subview frames here
}
func setupMultipleAnswerView() {
self.answerLabel.label(textStr: "Cevaplar",...
}
How to navigate PushViewController from UIView class to New View Controller, Till now what I tried with delegate/ protocol but still no success from button click, below is the swift code what I tried to navigate from uiview class
protocol MyViewDelegate {
func didTapButton()
}
class Ticket : UIView {
static let instance = Ticket()
#IBOutlet var parentView: UIView!
#IBOutlet weak var ticketView: UIView!
var delegate : MyViewDelegate?
override init (frame: CGRect) {
super.init(frame: frame)
Bundle.main.loadNibNamed("Ticket", owner: self, options: nil)
}
#IBAction func btnHistoryTicket(_ sender: ThemeButtonTicket) {
}
#IBAction func btnNewTicket(_ sender: ThemeButtonTicket) {
func buttonTapAction() {
delegate?.didTapButton() // Expect to navigate
}
}
required init?(coder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
func showTicket(){
UIApplication.shared.windows.first{$0.isKeyWindow}?.addSubview(parentView)
}
}
class ViewController: UIViewController, MyViewDelegate {
override func viewDidLoad() {
super.viewDidLoad()
let ticket = Ticket()
ticket.delegate = self
}
func didTapButton() {
let vc = kMainStoryboard.instantiateViewController(withIdentifier: "SubmitTicketVC") as! SubmitTicketVC
self.navigationController?.pushViewController(vc, animated: true)
}
}
I am looking for a way to refer to the IBOutlet variable in a custom class UIView, from another class. I found layoutSubviews, but each change only works on the first call, and not on each subsequent call. Thanks for help!
ViewController class:
var SB = StatusBar()
SB.update(1)
SB.update(2)
SB.update(3)
StatusBar class:
class StatusBar: UIView {
#IBOutlet var view: UIView!
#IBOutlet weak var label: UILabel!
var ActualStatus: Int!
required init?(coder: NSCoder) {
super.init(coder: coder)
xibSetup()
}
override init(frame: CGRect) {
super.init(frame: frame)
xibSetup()
}
func update(status) {
ActualStatus = status
self.layoutSubviews()
}
override func layoutSubviews() {
super.layoutSubviews()
label.text = ActualStatus
}
func xibSetup() {
view = loadViewFromNib()
view.frame = bounds
view.autoresizingMask = [UIView.AutoresizingMask.flexibleWidth, UIView.AutoresizingMask.flexibleHeight]
addSubview(view)
}
func loadViewFromNib() -> UIView {
let bundle = Bundle(for: type(of:self))
let nib = UINib(nibName: "StatusBar", bundle: bundle)
let view = nib.instantiate(withOwner: self, options: nil)[0] as! UIView
return view
}
}
Result: label.text is 1, change only works on the first call
Actually i have a Custom view with two button, and i want to hide it at runtime through UIViewController , So i don't get any exact thing to hide that button from UIViewcontroller class
Here is my CustomView class,
import UIKit
class BottomButtonUIView: UIView {
#IBOutlet weak var btnNewOrder: UIButton!
#IBOutlet weak var btnChat: UIButton!
override func awakeFromNib() {
super.awakeFromNib()
}
// MARK: init
required init(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)!
if self.subviews.count == 0 {
setup()
}
}
override init(frame: CGRect) {
super.init(frame: frame)
setup()
}
func setup() {
if let view = Bundle.main.loadNibNamed("BottomButtonUIView", owner: self, options: nil)?.first as? BottomButtonUIView {
view.frame = bounds
view.autoresizingMask = [.flexibleWidth, .flexibleHeight]
addSubview(view)
}
}
#IBAction func btnOrderNowClick(_ sender: Any) {
let VC1 = StoryBoardModel.orderDeatalStoryBord.instantiateViewController(withIdentifier: "NewOrderViewController") as! NewOrderViewController
VC1.isPush = false
let navController = UINavigationController(rootViewController: VC1) // Creating a navigation controller with VC1 at the root of the navigation stack.
let currentController = getCurrentVC.getCurrentViewController()
currentController?.present(navController, animated:true, completion: nil)
}
#IBAction func btnChatNowClick(_ sender: Any) {
}
func getCurrentViewController() -> UIViewController? {
if let rootController = UIApplication.shared.keyWindow?.rootViewController {
var currentController: UIViewController! = rootController
while( currentController.presentedViewController != nil ) {
currentController = currentController.presentedViewController
}
return currentController
}
return nil
}
}
I set it to UIView in StoryBoard, and then I create outlet of that view,
#IBOutlet weak var viewBottmNewOrder: BottomButtonUIView!
Now i want to hide btnNewOrder from UIViewcontroller class but when i use
viewBottmNewOrder.btnNewOrder.isHidden = true it cause null exception, Please do need full answer.
Please don't do like that. The required init(coder aDecoder: NSCoder) will call a lot of times when the BottomButtonUIView created from xib. And your custom view will look like:
[BottomButtonUIView [ BottomButtonUIView [btnNewOrder, btnChat]]].
So when you access to btnNewOrder like that:
viewBottmNewOrder.btnNewOrder it will null.
I think you should add your custom view in viewDidLoad of your `UIViewController'.
I have created a .xib and adding this xib to another view. I want to add a delegate method in that .xib file. Here is my code :
.xib file
import UIKit
protocol CustomCheckBoxWithCrossDelegate {
func deleteCustomCheckbox(itemToDelete: String)
}
class CustomCheckBoxWithCross: UIView {
#IBOutlet weak var radioButton: UIButton!
#IBOutlet weak var checkboxLbl: UILabel!
#IBOutlet weak var checkboxCrossBtn: UIButton!
var blockIndexForTheCrossButton: Int = 0
var delegate: CustomCheckBoxWithCrossDelegate!
override init(frame: CGRect) {
super.init(frame: frame)
loadViewFromNib ()
}
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
loadViewFromNib ()
}
func loadViewFromNib() {
let bundle = NSBundle(forClass: self.dynamicType)
let nib = UINib(nibName: "CustomCheckBoxWithCross", bundle: bundle)
let view = nib.instantiateWithOwner(self, options: nil)[0] as! UIView
view.frame = bounds
view.autoresizingMask = [.FlexibleWidth, .FlexibleHeight]
self.addSubview(view);
}
#IBAction func crossBtnTapped(sender: AnyObject) {
print("Delegate --> \(delegate)")
delegate!.deleteCustomCheckbox("hello")
}
}
But in "crossBtnTapped" method I am getting nil value for that delegate.
can anyone please tell me what I am doing wrong?
You must have the instance of CustomCheckBoxWithCross in your other class, where you have implemented the protocol. Set delegate property of CustomCheckBoxWithCross instance to self in that file.
I ran to this error several times before, add if delegate is not nil condition.
#IBAction func crossBtnTapped(sender: AnyObject) {
if delegate != {
delegate!.deleteCustomCheckbox("hello")
}
}