iOS/Swift: how to detect touch action on a UITextField
It seems “Touch Up Inside” is not enabled for UITextField, but “Touch Down” works. So the solution is as follows: Swift 4.x myTextField.addTarget(self, action: #selector(myTargetFunction), for: .touchDown) @objc func myTargetFunction(textField: UITextField) { print(“myTargetFunction”) } Swift 3.x myTextField.addTarget(self, action: #selector(myTargetFunction), for: UIControlEvents.touchDown) @objc func myTargetFunction(textField: UITextField) { print(“myTargetFunction”) }