Customize UISearchBar in Swift 4 - ios

Question

I need to delete the background of the search bar.
The part where text is entered (white color) make it higher.
put a green border around the white part.
customize the font.
I need this:
What I have achieved is this:
My code:
#IBOutlet weak var searchBar: UISearchBar!
override func viewDidLoad() {
super.viewDidLoad()
self.searchBar.layer.borderColor = #colorLiteral(red: 0.2352941176, green: 0.7254901961, blue: 0.3921568627, alpha: 1)
self.searchBar.layer.borderWidth = 1
self.searchBar.clipsToBounds = true
self.searchBar.layer.cornerRadius = 20
}

Answer 1

Try using this code:
class JSSearchView : UIView {
var searchBar : UISearchBar!
override func awakeFromNib()
{
// the actual search barw
self.searchBar = UISearchBar(frame: self.frame)
self.searchBar.clipsToBounds = true
// the smaller the number in relation to the view, the more subtle
// the rounding -- https://www.hackingwithswift.com/example-code/calayer/how-to-round-the-corners-of-a-uiview
self.searchBar.layer.cornerRadius = 5
self.addSubview(self.searchBar)
self.searchBar.translatesAutoresizingMaskIntoConstraints = false
let leadingConstraint = NSLayoutConstraint(item: self.searchBar, attribute: .leading, relatedBy: .equal, toItem: self, attribute: .leading, multiplier: 1, constant: 20)
let trailingConstraint = NSLayoutConstraint(item: self.searchBar, attribute: .trailing, relatedBy: .equal, toItem: self, attribute: .trailing, multiplier: 1, constant: -20)
let yConstraint = NSLayoutConstraint(item: self.searchBar, attribute: .centerY, relatedBy: .equal, toItem: self, attribute: .centerY, multiplier: 1, constant: 0)
self.addConstraints([yConstraint, leadingConstraint, trailingConstraint])
self.searchBar.backgroundColor = UIColor.clear
self.searchBar.setBackgroundImage(UIImage(), for: .any, barMetrics: .default)
self.searchBar.tintColor = UIColor.clear
self.searchBar.isTranslucent = true
// https://stackoverflow.com/questions/21191801/how-to-add-a-1-pixel-gray-border-around-a-uisearchbar-textfield/21192270
for s in self.searchBar.subviews[0].subviews {
if s is UITextField {
s.layer.borderWidth = 1.0
s.layer.cornerRadius = 10
s.layer.borderColor = UIColor.green.cgColor
}
}
}
override func draw(_ rect: CGRect) {
super.draw(rect)
// the half height green background you wanted...
let topRect = CGRect(origin: .zero, size: CGSize(width: self.frame.size.width, height: (self.frame.height / 2)))
UIColor.green.set()
UIRectFill(topRect)
}
}
And to use it, drop a custom view into your xib or storyboard file and simply set the custom class type to the name of the class (JSSearchView).