Change UITextField height in UISearchBar - Swift 3 - ios

Question

is there a way to change the height of a UISearchBar's textField??
I can access the textField like this and although background color changes, nothing seems to change in terms of frame/size...
I was able to change the searchBar height in IB by setting the constraints.
But the textfield stayed the same (44)...
override func viewDidLayoutSubviews() {
super.viewDidLayoutSubviews()
self.mySearchBar.layoutIfNeeded()
self.mySearchBar.layoutSubviews()
self.mySearchBar.backgroundColor = UIColor.blue
for subView in mySearchBar.subviews
{
for subsubView in subView.subviews
{
if let textField = subsubView as? UITextField
{
var currentTextFieldBounds = textField.bounds
textField.borderStyle = UITextBorderStyle.none
currentTextFieldBounds.size.height = self.mySearchBar.bounds.height-10
textField.bounds = currentTextFieldBounds
textField.backgroundColor = UIColor.red
}
}
}

Answer 1

The UITextField within the UISearchBar is not directly accessible. You could create your own UISearchBarsubclass to emulate a regular Search bar. You could completely customize the UI as you see fit with either Interface builder or programatically.
protocol SearchBarEventDelegate {
func searchButtonPressed(searchBar: CustomSearchBar)
func searchBarDidReceiveInput(searchText: String)
func searchBarDidBackspace(searchText: String)
}
class CustomSearchBar: UIView {
var searchTextField: UITextField?
var delegate : SearchBarEventDelegate?
override init(frame: CGRect) {
super.init(frame: frame)
addSubview(searchTextField())
}
func searchTextField() -> UITextField {
//Input custom frame and attributes here.
let textField = UITextField(frame: CGRectZero)
textField.delegate = self
return textField
}
}
extension CustomSearchBar : UITextFieldDelegate {
//Implement Textfield delegate methods here.
//Propagate events to CustomSearchBar delegate. Example Provided.
func textField(textField: UITextField, shouldChangeCharactersInRange range: NSRange, replacementString string: String) -> Bool {
let partialSearchString = textField.text!
let fullSearchString = (partialSearchString as NSString).stringByReplacingCharactersInRange(range, withString: string)
if(range.length == 1) {
delegate?.searchBarDidBackspace(fullSearchString)
} else {
delegate?.searchBarDidReceiveInput(fullSearchString)
}
return true
}
}