How to detect Orientation Change in Custom Keyboard Extension in iOS 8?

Question

In Custom Keyboard Extension , we can\'t use

`didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation` 

and

Answer 1

for those who are searching for the answer in Swift 5.

by override func didRotate(from fromInterfaceOrientation: UIInterfaceOrientation) method. you can detect device orientation.

here is the code for my custom keyboard.

override func didRotate(from fromInterfaceOrientation: UIInterfaceOrientation) {
        let screen = UIScreen.main.bounds
        if screen.width < screen.height {
            print("!!! portrait")
            let constraintForHeight:NSLayoutConstraint = NSLayoutConstraint(item: mainView!, attribute: NSLayoutConstraint.Attribute.height, relatedBy: NSLayoutConstraint.Relation.equal, toItem: nil, attribute: NSLayoutConstraint.Attribute.notAnAttribute, multiplier: 0, constant: 325)
            constraintForHeight.isActive = true
            constraintForHeight.priority = UILayoutPriority.defaultHigh
            self.inputView?.addConstraint(constraintForHeight)
        } else {
            print("!!! landspace")
            let constraintForHeight:NSLayoutConstraint = NSLayoutConstraint(item: mainView!, attribute: NSLayoutConstraint.Attribute.height, relatedBy: NSLayoutConstraint.Relation.equal, toItem: nil, attribute: NSLayoutConstraint.Attribute.notAnAttribute, multiplier: 0, constant: 210)
            constraintForHeight.isActive = true
            constraintForHeight.priority = UILayoutPriority.defaultHigh
            self.inputView?.addConstraint(constraintForHeight)
        }
    }