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 navigati

Answer 1

I was able to use the following subclass code in Swift. It uses the existing height as a starting point and adds to it.

Unlike the other solutions on this page, it seems to still resize correctly when switching between landscape and portrait orientation.

class TallBar: UINavigationBar {
    override func sizeThatFits(size: CGSize) -> CGSize {
        var size = super.sizeThatFits(size)
        size.height += 20
        return size
    }
}

Answer 2

If you want to use a custom height for your nav bar, I think you should probably, at the very least, use a custom nav bar (not one in your nav controller). Hide the navController's bar and add your own. Then you can set its height to be whatever you want.

Answer 3

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)
    }
}

Answer 4

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 5

Here's a pretty nice subclass in Swift that you can configure in Storyboard. It's based on the work done by mackross, which is great, but it was pre-iOS7 and will result in your nav bar not extending under the status bar.

class UINaviationBarCustomHeight: UINavigationBar {

// Note: this must be set before the navigation controller is drawn (before sizeThatFits is called),
// so set in IB or viewDidLoad of the navigation controller
@IBInspectable var barHeight: CGFloat = -1
@IBInspectable var barHeightPad: CGFloat = -1

override func sizeThatFits(size: CGSize) -> CGSize {
    var customSize = super.sizeThatFits(size)
    let stockHeight = customSize.height
    if (UIDevice().userInterfaceIdiom == .Pad && barHeightPad > 0) {
        customSize.height = barHeightPad
    }
    else if (barHeight > 0) {
        customSize.height = barHeight
    }
    // re-center everything
    transform = CGAffineTransformMakeTranslation(0, (stockHeight - customSize.height) / 2)
    resetBackgroundImageFrame()
    return customSize
}

override func setBackgroundImage(backgroundImage: UIImage?, forBarPosition barPosition: UIBarPosition, barMetrics: UIBarMetrics) {
    super.setBackgroundImage(backgroundImage, forBarPosition: barPosition, barMetrics: barMetrics)
    resetBackgroundImageFrame()
}

private func resetBackgroundImageFrame() {
    if let bg = valueForKey("backgroundView") as? UIView {
        var frame = bg.frame
        frame.origin.y = -transform.ty
        if (barPosition == .TopAttached) {
            frame.origin.y -= UIApplication.sharedApplication().statusBarFrame.height
        }
        bg.frame = frame
    }
}
}

Answer 6

I am a newbie in ios yet. I solved the problem in following way :

1. I have created a new class that inherits from UINavigationBar

2. I override the following method :

    (void)setBounds:(CGRect)bounds {
   
      [super setBounds:bounds];
      self.frame = CGRectMake(0, 0, 320, 54);
   
   
     }
   

3.To get a custom background of the navigation bar, I overrided the following method :

-(void)drawRect:(CGRect)rect {

    [super drawRect:rect];

    UIImage *img = [UIImage imageNamed:@"header.png"];

    [img drawInRect:CGRectMake(0,0, self.frame.size.width, self.frame.size.height)];


}

1. In xib file, I have changed the default UINavigationBar class of the navigation bar to my class.