Swift 3.0 - Hide keyboard for multiple UItextfield - swift3

Question

I have 5 UITextFields, everytime I clicked on the textfield, keyboard appeared. when user touch outside of the textfield, keyboard will hide. However, there is one special textField is for Pop Up. When Pop up appear, the previous textfield couldn't hide the keyboard. How am I gonna hide the keyboard first, and then show the pop up?
func textFieldDidBeginEditing(_ textField: UITextField) {
if textField == self.customerAddress{
scrollView.setContentOffset(CGPoint(x: 0,y:5), animated: true)
}
else if textField == self.district{
textField.resignFirstResponder()
scrollView.setContentOffset(CGPoint(x: 0,y:20), animated: true)
visualEffectView.isHidden = false
districtpicker.selectRow(3, inComponent: 0, animated: false)
self.view.addSubview(districtPopUp)
districtPopUp.center = self.subView.convert(CGPoint(x:subView.frame.size.width/2,y:subView.frame.size.height/3), to: subView)
districtPopUp.transform = CGAffineTransform.init(scaleX: 1.3, y: 1.3)
UIView.animate(withDuration: 0.4, animations: {
self.visualEffectView.alpha = 0.5
self.districtPopUp.alpha = 1
self.districtPopUp.transform = CGAffineTransform.identity
})
}
}
#IBAction func districtPopDismiss(_ sender: UIButton) {
scrollView.setContentOffset(CGPoint(x: 0,y:-64), animated: true)
UIView.animate(withDuration: 0.3, animations: {
self.districtPopUp.transform = CGAffineTransform.init(scaleX: 1.3, y: 1.3)
self.visualEffectView.alpha = 1
}) { (success) in
self.districtPopUp.removeFromSuperview()
}
self.visualEffectView.isHidden = true
}
func textFieldDidEndEditing(_ textField: UITextField) {
textField.resignFirstResponder()
}
func textFieldShouldReturn(_ textField: UITextField) -> Bool {
scrollView.setContentOffset(CGPoint(x: 0,y:-64), animated: true)
textField.resignFirstResponder()
return true
}
override func viewDidLoad() {
super.viewDidLoad()
let tapGesture: UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(CustomerViewController.hideKeyboard))
subView.addGestureRecognizer(tapGesture)
visualEffectView.isHidden = true
self.customerName.delegate = self
self.customerAddress.delegate = self
self.customerContact.delegate = self
self.customerIC.delegate = self
self.ticketNumber.delegate = self
self.latitudeGPS.delegate = self
self.longitudeGPS.delegate = self
self.district.delegate = self
// Do any additional setup after loading the view.
}
func hideKeyboard(){
scrollView.setContentOffset(CGPoint(x: 0,y:-64), animated: true)
self.customerName.resignFirstResponder()
self.customerAddress.resignFirstResponder()
self.customerContact.resignFirstResponder()
self.customerIC.resignFirstResponder()
self.ticketNumber.resignFirstResponder()
self.latitudeGPS.resignFirstResponder()
self.longitudeGPS.resignFirstResponder()
self.district.resignFirstResponder()
}

Answer 1

Instead of invoking resignFirstResponder() on each of your textFields you can just invoke view.endEditing(true) and keyboard will hide. Try to invoke this before the logic responsible for presenting the popup.

Answer 2

Simple and easy for all view controller swift 3+
This code help you to hide keyboard on touch anywhere on viewcontrol
extension UIViewController {
func hideKeyboardWhenTappedAround() {
let tap: UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(UIViewController.dismissKeyboard))
tap.cancelsTouchesInView = false
view.addGestureRecognizer(tap)
}
#objc func dismissKeyboard() {
view.endEditing(true)
}
}
Use below code in your viewDidLoad
self.hideKeyboardWhenTappedAround()