How to get all the textfields from a view in swift

Question

I have a view which has more than 15 UITextFields. I have to set bottomBorder(extension) for all the UITextFields. I can set it one by one for all

Answer 1

func getTextFields() {
    for textField in view.subviews where view is UITextField {
       (textField as? UITextField).setBottomBorder()
    }
}

Answer 2

I made it working, but still need the explanation why the code in question is not working
I got it from somewhere on the forum, not exactle able to credit the answer.

/** extract all the textfield from view **/
func getTextfield(view: UIView) -> [UITextField] {
var results = [UITextField]()
for subview in view.subviews as [UIView] {
    if let textField = subview as? UITextField {
        results += [textField]
    } else {
        results += getTextfield(view: subview)
    }
}
return results  

Call the above function in viewDidLoad or viewDidLayoutSubviews.

override func viewDidLayoutSubviews() {
    super.viewDidLayoutSubviews()

/** setting bottom border to the textfield **/
    let allTextField = getTextfield(view: self.view)
    for txtField in allTextField
    {
        txtField.setBottomBorder()
    }
}

Answer 3

Try this :)

for view in self.view.subviews as! [UIView] {
    if let textField = view as? UITextField {
        textField.setBottomBorder()
    }
}

Answer 4

try this

for aSubView: Any in self.view.subviews {
if (aSubView is UITextField) {
    var textField = (aSubView as! UITextField)
    textField. setBottomBorder()
}
}     

or try this

for view in self.view.subviews {
if (view is UITextField) {
     var textField = view as! UITextField
      textField. setBottomBorder()
}
}

Answer 5

Swift: This function will return all text-fields in a view. No matter if field exists in any subview. ;-)

func getAllTextFields(fromView view: UIView)-> [UITextField] {
    return view.subviews.flatMap { (view) -> [UITextField]? in
        if view is UITextField {
            return [(view as! UITextField)]
        } else {
            return getAllTextFields(fromView: view)
        }
    }.flatMap({$0})
}

Usage:

_=getAllTextFields(fromView : self.view).map{($0.text = "Hey dude!")}

Answer 6

Swift 5
A Very simple answer you can understand easyly : - You can handle all kind of Objects like UILable, UITextfields, UIButtons, UIView, UIImages . any kind of objecs etc.

for subviews in self.view.subviews {
    if subviews is UITextField
    {
        //MARK: - if the sub view is UITextField you can handle here
        funtextfieldsetting(textfield: subviews as! UITextField)
    }
    if subviews is UIButton
    {
        //MARK: - if the sub view is UIButton you can handle here
        funbuttonsetting(button: subviews as! UIButton)
    }
    if subviews is UILabel
    {
        //MARK: - if the sub view is UILabel you can handle here
        //Any thing you can do it with label or textfield etc
           
     }
 }