iOS 7 - Keyboard animation

Question

I\'m trying to understand the new keyboard animation in iOS 7.0 on the iPhone 5 Simulator. I want to resize my UITableView when the keyboard appears, but I can\

Answer 1

In Swift 4


Add observers for keyboard notifications:


• UIKeyboardDidShowNotification
• UIKeyboardDidHideNotification

via

NSNotificationCenter.defaultCenter().addObserver(_ observer: Any, 
        selector aSelector: Selector, 
        name aName: NSNotification.Name?, 
        object anObject: Any?)

And implement selector to animate the UI with Keyboard animation. In order to create a valid curve value we need to shift UIResponder.keyboardAnimationCurveUserInfoKey by << 16


func keyboardWillShow(_ notification: Notification!) {
    if let info = notification.userInfo {
        let keyboardSize = info[UIResponder.keyboardFrameEndUserInfoKey] as? CGRect
        let duration = info[UIResponder.keyboardAnimationDurationUserInfoKey] as? Double 
        let curveVal = (info[UIResponder.keyboardAnimationCurveUserInfoKey] as? NSNumber)?.intValue ?? 7 // default value for keyboard animation
        let options = UIView.AnimationOptions(rawValue: UInt(curveVal << 16))
        UIView.animate(withDuration: duration, delay: 0, options: options, animations: {
        // any operation to be performed
    }, completion: nil)
    }
}