Change the height of NavigationBar and UIBarButtonItem elements inside it in Cocoa Touch

Question

I suppose it's not strictly in line with Apple guidelines but I guess it must be possible somehow. I'd like to change the height of navigation bar inside UINavigationController and the height of UIBarButtonItem elements inside that bar.

Using a trick from this question I managed to change the height of navigation bar but I can see no way of adjusting the height of bar button items.

If anyone knows how to change the size of bar button items, please help me out.

Answer 1

This is my solution. It works very well.

@interface UINavigationBar (CustomHeight)

@end

@implementation UINavigationBar (CustomHeight)

- (CGSize)sizeThatFits:(CGSize)size {
    // Change navigation bar height. The height must be even, otherwise there will be a white line above the navigation bar.
    CGSize newSize = CGSizeMake(self.frame.size.width, 40);
    return newSize;
}

-(void)layoutSubviews {
    [super layoutSubviews];

    // Make items on navigation bar vertically centered.
    int i = 0;
    for (UIView *view in self.subviews) {
        NSLog(@"%i. %@", i, [view description]);
        i++;
        if (i == 0)
            continue;
        float centerY = self.bounds.size.height / 2.0f;
        CGPoint center = view.center;
        center.y = centerY;
        view.center = center;
    }
}