Move UIView up when the keyboard appears in iOS

Question

I have a UIView, it is not inside UIScrollView. I would like to move up my View when the keyboard appears. Before I tried to use this solution: How can I make a UITextField

Answer 1

Bind a view to keyboard is also an option (see GIF at the bottom of the answer)

Swift 4

Use an extension: (Wasn't fully tested)

extension UIView{
    func bindToKeyboard(){
        NotificationCenter.default.addObserver(self, selector: #selector(UIView.keyboardWillChange(notification:)), name: Notification.Name.UIKeyboardWillChangeFrame, object: nil)
    }

    func unbindToKeyboard(){
        NotificationCenter.default.removeObserver(self, name: Notification.Name.UIKeyboardWillChangeFrame, object: nil)
    }
    @objc
    func keyboardWillChange(notification: Notification) {
        let duration = notification.userInfo![UIKeyboardAnimationDurationUserInfoKey] as! Double
        let curve = notification.userInfo![UIKeyboardAnimationCurveUserInfoKey] as! UInt
        let curFrame = (notification.userInfo![UIKeyboardFrameBeginUserInfoKey] as! NSValue).cgRectValue
        let targetFrame = (notification.userInfo![UIKeyboardFrameEndUserInfoKey] as! NSValue).cgRectValue
        let deltaY = targetFrame.origin.y - curFrame.origin.y

        UIView.animateKeyframes(withDuration: duration, delay: 0.0, options: UIViewKeyframeAnimationOptions(rawValue: curve), animations: {
            self.frame.origin.y+=deltaY

        },completion: nil)

    }
}

Swift 2 + 3

Use an extension:

extension UIView{
    func bindToKeyboard(){
        NSNotificationCenter.defaultCenter().addObserver(self, selector: #selector(UIView.keyboardWillChange(_:)), name: UIKeyboardWillChangeFrameNotification, object: nil)
    }


    func keyboardWillChange(notification: NSNotification) {

        let duration = notification.userInfo![UIKeyboardAnimationDurationUserInfoKey] as! Double
        let curve = notification.userInfo![UIKeyboardAnimationCurveUserInfoKey] as! UInt
        let curFrame = (notification.userInfo![UIKeyboardFrameBeginUserInfoKey] as! NSValue).CGRectValue()
        let targetFrame = (notification.userInfo![UIKeyboardFrameEndUserInfoKey] as! NSValue).CGRectValue()
        let deltaY = targetFrame.origin.y - curFrame.origin.y


        UIView.animateKeyframesWithDuration(duration, delay: 0.0, options: UIViewKeyframeAnimationOptions(rawValue: curve), animations: {
                self.frame.origin.y+=deltaY

        },completion: nil)

    }  
}

Usage:

// view did load...
textField.bindToKeyboard()

...

// view unload
textField.unbindToKeyboard()

result:

important
Don't forget to remove the observer when view is unloading