objective c - iOS 11 - Keyboard Height is returning 0 in keyboard notification

Question

I have been using Keyboard notifications without any problem and getting exact height of Keyboard.

- (void)keyboardDidShow:(NSNotification *) notification{
    CGSize keyboardSize = [[[notification userInfo] objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue].size;

    NSLog(@"%f",keyboardSize.height);}

but with iOS 11 the size of keyboard is 0 when the notification is called.

What is the problem occurring in this scenario? I am using xcode 9 Beta 5

Answer 1

Use this:

CGSize keyboardSize = [[[notification userInfo] objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue].size;

For Swift, you can use:

let keyboardSize = (notification.userInfo![UIKeyboardFrameEndUserInfoKey] as! NSValue).cgRectValue.size