UITextView avoid keyboard scrolling - ios

Question

I have created an extension of UIScrollView where when a user selects a textfield and the keyboard appears, the textfield will scroll up if it is in the way of the keyboard. I have it working for a UITextField but it doesn't seem to work with a UITextView. I have searched many posts on stackoverflow but can't seem to find anything to help. Here is the code for the extension:
extension UIScrollView {
func respondToKeyboard() {
self.registerForKeyboardNotifications()
}
func registerForKeyboardNotifications() {
// Register to be notified if the keyboard is changing size i.e. shown or hidden
NSNotificationCenter.defaultCenter().addObserver(
self,
selector: #selector(keyboardWasShown(_:)),
name: UIKeyboardWillShowNotification,
object: nil
)
NSNotificationCenter.defaultCenter().addObserver(
self,
selector: #selector(keyboardWillBeHidden(_:)),
name: UIKeyboardWillHideNotification,
object: nil
)
}
func keyboardWasShown(notification: NSNotification) {
if let info = notification.userInfo,
keyboardSize = info[UIKeyboardFrameBeginUserInfoKey]?.CGRectValue.size {
self.contentInset.bottom = keyboardSize.height + 15
self.scrollIndicatorInsets.bottom = keyboardSize.height
var frame = self.frame
frame.size.height -= keyboardSize.height
}
}
func keyboardWillBeHidden(notification: NSNotification) {
self.contentInset.bottom = 0
self.scrollIndicatorInsets.bottom = 0
}
In my view controller I would just set it like:
scrollView.respondToKeyboard()
Can someone point me in the right direction of how I can implement the UITextView as an extension to move up if the keyboard is in the way?

Answer 1

You can try using the UITextView delegate methods. Check out this link for more details. For swift, check the tutorial here.

Answer 2

for me this solution works fine for UITextView. Perhaps u can update this for Scrollview
// keyboard visible??
lazy var keyboardVisible = false
// Keyboard-Height
lazy var keyboardHeight: CGFloat = 0
func updateTextViewSizeForKeyboardHeight(keyboardHeight: CGFloat) {
textView.contentInset.bottom = keyboardHeight
self.keyboardHeight = keyboardHeight
}
func keyboardDidShow(notification: NSNotification) {
if let rectValue = notification.userInfo?[UIKeyboardFrameBeginUserInfoKey] as? NSValue {
if keyboardVisible == false {
let keyboardSize = rectValue.CGRectValue().size
keyboardVisible = true
updateTextViewSizeForKeyboardHeight(keyboardSize.height)
}
}
}
func keyboardDidHide(notification: NSNotification) {
if keyboardVisible {
keyboardVisible = false
updateTextViewSizeForKeyboardHeight(0)
}
}