Add UIToolBar to all keyboards (swift)

Question

I\'m trying to add a custom UIToolBar to all of my keyboards with as little repetition. The way I\'m currently doing it requires me to add the code to all my viewDidLoads and as

Answer 1

You can make a UIToolbar subclass work by taking advantage of the responder chain. No need to change your view controllers. In Swift 3:

class KeyboardAccessoryToolbar: UIToolbar {
    convenience init() {
        self.init(frame: CGRect(x: 0, y: 0, width: UIScreen.main.bounds.width, height: 50))
        self.barStyle = .default
        self.isTranslucent = true
        self.tintColor = UIColor(red: 76 / 255, green: 217 / 255, blue: 100 / 255, alpha: 1)

        let doneButton = UIBarButtonItem(barButtonSystemItem: .done, target: self, action: #selector(self.done))
        let cancelButton = UIBarButtonItem(barButtonSystemItem: .cancel, target: self, action: #selector(self.cancel))
        let spaceButton = UIBarButtonItem(barButtonSystemItem: .flexibleSpace, target: nil, action: nil)
        self.items = [cancelButton, spaceButton, doneButton]

        self.isUserInteractionEnabled = true
        self.sizeToFit()
    }

    func done() {
        // Tell the current first responder (the current text input) to resign.
        UIApplication.shared.sendAction(#selector(UIResponder.resignFirstResponder), to: nil, from: nil, for: nil)
    }

    func cancel() {
        // Call "cancel" method on first object in the responder chain that implements it.
        UIApplication.shared.sendAction(#selector(cancel), to: nil, from: nil, for: nil)
    }
}

Then add the following to your applicationDidFinishLaunching to apply this to all your keyboards:

    let accessoryView = KeyboardAccessoryToolbar()
    UITextField.appearance().inputAccessoryView = accessoryView
    UITextView.appearance().inputAccessoryView = accessoryView