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swiftcgrect

Swift 4 CGRect height cannot be used

I am using swift 4 & getting the following error:

Instance member 'height' cannot be used on type 'CGRect'

When using the below code:

 let userInfo = notification.userInfo!

let keyboardFrame = (userInfo[UIKeyboardFrameBeginUserInfoKey] as! NSValue).cgRectValue

let keyboardFrame = (userInfo[UIKeyboardFrameBeginUserInfoKey] as! NSValue).cgRectValue

let changeInHeight = (CGRect.height(keyboardFrame) + 40) * (show ? 1 : -1)

I cannot figure out why, any help much appreciated!

Solution

  • height is a property of a CGRect structure. You are accessing it like it is a class method. Since keyboardFrame is of type CGRect, you want keyboardFrame.height instead.

    let changeInHeight = (keyboardFrame.height + 40) * (show ? 1 : -1)