Swift : How to change navigation controller's height without adding a toolbar

Question

How to change navigation controller's height without adding a toolbar ? Here is an example of apple's iBooks app that I want to build. I've a solution but isn't perfect( adding a toolbar below the nav controller but it is very ugly)

Answer 1

I think this is what you want, screenshot

You can not change navbar height,but you can put a view under it,and use autolayout and shadow to make it looks like part of navbar.Set it to the class you made

1. Write a view to act as the extendbar

   class ExtendNavView:UIView{
       override func willMoveToWindow(newWindow: UIWindow?) {
          let scale = UIScreen.mainScreen().scale
          self.layer.shadowOffset = CGSizeMake(0, 1.0/scale)
   
          self.layer.shadowRadius = 0;
          self.layer.shadowColor = UIColor.blackColor().CGColor
          self.layer.shadowOpacity = 0.25
        }
    }
   

2. Drag a UIView and put it under the navBar,then set autolayout to make it always under the nav

3. Change the navBar property in your viewController

   class ViewController: UIViewController {
       override func viewDidLoad() {
           self.navigationController?.navigationBar.translucent = false
           self.navigationController?.navigationBar.shadowImage = UIImage(named: "TransparentPixel")
        self.navigationController?.navigationBar.setBackgroundImage(UIImage(named:"Pixel"), forBarMetrics:UIBarMetrics.Default)
   
         }
     }
   

The two image used here(Note:they are Translucent)

Pixel

url= "https://i.sstatic.net/gFwyN.png"

TransparentPixel

url = "https://i.sstatic.net/zpQw4.png "

You can also look at the Apple example project,you can also find the two images there https://developer.apple.com/library/ios/samplecode/NavBar/Introduction/Intro.html