Question

I have a view which I would like to fill up the entire screen between a UIToolbar at the top and the keyboard at the bottom. I am listening for UIKeyboardWillShowNotification messages to detect when the keyboard appears and using the following to adjust the view:

- (void)keyboardWillShow:(NSNotification*)notification {

    NSDictionary* userInfo = [notification userInfo];

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

    [UIView animateWithDuration:0.3f animations:^{

        subview.frame = CGRectMake(subview.frame.origin.x, subview.frame.origin.y, self.view.frame.size.width - 40, self.view.frame.size.height - 62 - keyboardSize.height - 20); 
    }];
}

This works fine in portrait mode but in landscape the view is all over the place. I have tried switching the width/height when the device is in landscape mode to no avail.

I know this is basic stuff but I’ve always struggled to understand how to adjust a view correctly for landscape mode.

Answer 1

You should use CGSize screenSize=[[UIScreen mainScreen] bounds].size;

Then replace,

subview.frame = CGRectMake(subview.frame.origin.x,
subview.frame.origin.y, self.view.frame.size.width - 40,
self.view.frame.size.height - 62 - keyboardSize.height - 20);

with this line:

subview.frame = CGRectMake(0,
subview.frame.origin.y, screenSize.width, screenSize.height - subview.frame.origin.y
- keyboardSize.height - 20);

I just tried and it worked on both directions, hope it helps!