iPhone X how to handle View Controller inputAccessoryView?

Question

I have a messaging app that has the typical UI design of a text field at the bottom of a full screen table view. I am setting that text field to be the view controller\'s

Answer 1

This is a general issue with inputAccessoryViews on iPhone X. The inputAccessoryView ignores the safeAreaLayoutGuides of its window.

To fix it we have to manually add the constraint in your class when the view moves to its window:

override func didMoveToWindow() {
    super.didMoveToWindow()
    if #available(iOS 11.0, *) {
        if let window = self.window {
            self.bottomAnchor.constraintLessThanOrEqualToSystemSpacingBelow(window.safeAreaLayoutGuide.bottomAnchor, multiplier: 1.0).isActive = true
        }
    }
}

PS: self here is referring to the inputAccessoryView.

I wrote about it in detail here: http://ahbou.org/post/165762292157/iphone-x-inputaccessoryview-fix