iPhoneX and iPhone 8 keyboard height are different

Question

I use below code to get keyboard height. Then use this height to calculate the frame of an UIView to make sure this UIView just on the top of the k

Answer 1

This works for every device and iOS version so far

- (void)keyboardWillShown:(NSNotification*)aNotification
{
        NSDictionary* info = [aNotification userInfo];
        CGFloat kbHeight = [[info objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue].size.height;
        CGFloat safeAreaBottomInset = 0;
        if (@available(iOS 11.0, *)) {
            safeAreaBottomInset = self.view.safeAreaInsets.bottom;
        }
        self.containerViewBottomConstraint.constant += (kbHeight - safeAreaBottomInset); //In my case I use a constraint to adapt the UI when the keyboard is presented
        [self.view layoutIfNeeded];
}