Set textfield in UISearchBar - swift

Question

I'm trying to add SearchController to UINavigationBar. I'm trying to set UITextField of UISearchBar after back button of UINavigationController. I want some more space after back button
When I start searching it appears as
Whereas I should be able to view back button. Only textfield width should be decreased. Also after Cancel it should be again back to initial layout. Whereas it is displayed as below:
Below is my code
var searchResultController = UISearchController()
self.searchResultController = ({
let controller = UISearchController(searchResultsController: nil)
controller.searchResultsUpdater = self
controller.dimsBackgroundDuringPresentation = false
controller.searchBar.sizeToFit()
controller.searchBar.delegate = self
controller.hidesNavigationBarDuringPresentation = false
self.navigationController?.navigationBar.addSubview(controller.searchBar)
return controller
})()
override func viewDidAppear(animated: Bool) {
for subView in searchResultController.searchBar.subviews{
for subsubView in subView.subviews {
if let textField = subsubView as? UITextField {
var bounds: CGRect
bounds = textField.frame
bounds.size.width = self.view.bounds.width - 50
}
}
}
}
Please let me know how can I fix this.
Thanks in advance

Answer 1

For setting the UIsearchBar add it to Navigation's titleView as
self.navigationItem.titleView = controller.searchBar
For removing Cancel button we can use UISearchControllerDelegate method
func didPresentSearchController(searchController: UISearchController) {
searchController.searchBar.showsCancelButton = false
}
Hope this may help any one.