How do I programmatically change the height of a navigationBar in Swift? - ios

Question

override func viewDidLayoutSubviews() {
super.viewDidLayoutSubviews()
let height = CGFloat(84)
self.navigationController?.navigationBar.frame = CGRect(x: 0, y: 0, width: self.view.frame.width, height: height)
}
This code simply inserts space above the titleView. A custom titleView at point (0,0) has ~20 points of space above it. A height >40 starts to run off the navBar.

Answer 1

You can subclass UINavigationBar :
class CustomNavigationBar: UINavigationBar {
override func sizeThatFits(_ size: CGSize) -> CGSize {
let newSize :CGSize = CGSize(width: self.frame.size.width,height: 84)
return newSize
}
}
Then create the navigation controller and use the initialiser to use your custom navigation bar class.
let nav = UINavigationController(navigationBarClass:CustomNavigationBar.self,toolbarClass: nil)
All existing behavior for UINavigationBar is preserved and your custom height is adopted.
OR
Like you already tried :
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
let height: CGFloat = 84 //whatever height you want
let bounds = self.navigationController!.navigationBar.bounds
self.navigationController?.navigationBar.frame = CGRect(x: 0, y: 0, width: bounds.width, height: bounds.height + height)
}
OR :
You can try this solution Changing the height of the Navigation bar iOS Swift

Answer 2

you can use a custom view to replace the navigation bar.This is more easy and flexible. hide the navi bar and implement a custom view.
class ViewController : UIViewController {
var navBar: UINavigationBar = UINavigationBar()
override func viewDidLoad() {
super.viewDidLoad()
self.setCustomNavBarView()
}
func setCustomNavBarView() {
self.navBar.frame = CGRect(x: 0, y: 0, width: 350, height: 50) // Set you custom width and Height
self.navBar.backgroundColor = UIColor.gray
self.view.addSubview(navBar)
}
}
A simple tutorial on how to do that:
Hope this helps!!

Answer 3

class ViewController: UIViewController {
var navBar: UINavigationBar = UINavigationBar()
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
self.setCustomNavBarView()
}
`func setCustomNavBarView() {
self.navBar.frame = CGRect(x: 0, y: 0, width: 350, height: 100) // Set you custom width and Height
self.navBar.backgroundColor = UIColor.gray
self.view.addSubview(navBar)
}
`
swift 3 updated code here