iPhone - How set uinavigationbar height?

Question

I want to make the top of the navigation view a bit smaller. How would you achieve this? This is what I've tried so far, but as you can see, even though I make the navigationbar smaller, the area which it used to occupy is still there (black).

[window addSubview:[navigationController view]];
navigationController.view.frame = CGRectMake(0, 100, 320, 280);
navigationController.navigationBar.frame = CGRectMake(0, 0, 320, 20);
navigationController.view.backgroundColor = [UIColor blackColor];
[window makeKeyAndVisible];

Answer 1

Create a UINavigationBar Category with a custom sizeThatFits.

@implementation UINavigationBar (customNav)   - (CGSize)sizeThatFits:(CGSize)size {     CGSize newSize = CGSizeMake(self.frame.size.width,70);     return newSize;   } @end 

Answer 2

Using this navigation bar subclass I've successfully created a larger navigation bar on iOS 5.x to iOS 6.x on the iPad. This gives me a larger navigation bar but doesn't break all the animations.

static CGFloat const CustomNavigationBarHeight = 62; static CGFloat const NavigationBarHeight = 44; static CGFloat const CustomNavigationBarHeightDelta = CustomNavigationBarHeight - NavigationBarHeight;  @implementation HINavigationBar  - (id)initWithFrame:(CGRect)frame {     self = [super initWithFrame:frame];     if (self) { //      UIColor *titleColor = [[HITheme currentTheme] fontColorForLabelForLocation:HIThemeLabelNavigationTitle]; //      UIFont *titleFont = [[HITheme currentTheme] fontForLabelForLocation:HIThemeLabelNavigationTitle];  //      [self setTitleTextAttributes:@{ UITextAttributeFont : titleFont, UITextAttributeTextColor : titleColor }];          CGAffineTransform translate = CGAffineTransformMakeTranslation(0, -CustomNavigationBarHeightDelta / 2.0);         self.transform = translate;         [self resetBackgroundImageFrame];      }     return self; }  - (void)resetBackgroundImageFrame {     for (UIView *view in self.subviews) {         if ([NSStringFromClass([view class]) rangeOfString:@"BarBackground"].length != 0) {             view.frame = CGRectMake(0, CustomNavigationBarHeightDelta / 2.0, self.bounds.size.width, self.bounds.size.height);         }     } }  - (void)setBackgroundImage:(UIImage *)backgroundImage forBarMetrics:(UIBarMetrics)barMetrics {     [super setBackgroundImage:backgroundImage forBarMetrics:barMetrics];     [self resetBackgroundImageFrame]; }  - (CGSize)sizeThatFits:(CGSize)size {     size.width = self.frame.size.width;     size.height = CustomNavigationBarHeight;     return size; }  - (void)setFrame:(CGRect)frame {     [super setFrame:frame];     [self resetBackgroundImageFrame]; }    @end 

Answer 3

For swift

create a subclass of Uinavigation bar.

import UIKit

class higherNavBar: UINavigationBar {

override func sizeThatFits(size: CGSize) -> CGSize {
    var newSize:CGSize = CGSizeMake(self.frame.size.width, 87)
    return newSize
}

There will be two blank strips on both sides, I changed the width to the exact number to make it work.

However the title and back button are aligned to the bottom.

Answer 4

It's not necessary to subclass the UINavigationBar. In Objective-C you can use a category and in Swift you can use an extension.

extension UINavigationBar {
    public override func sizeThatFits(size: CGSize) -> CGSize {
        return CGSize(width: frame.width, height: 70)
    }
}