how to adjust the position of the UINavigationBar in swift5?

Question

I would like to reposition the UINavigationBar. So I used the code to give a new value, but it hasn't changed.

@IBOutlet var headerBar: UINavigationBar!
let screenHeight = UIScreen.main.bounds.size.height
    override func viewDidLoad() {
        super.viewDidLoad()
        if screenHeight > 667 {
            headerBar = UINavigationBar(frame: CGRect(x: 0, y: 54, width: headerBar.frame.width, height: headerBar.frame.height))
        } else {
            headerBar = UINavigationBar(frame: CGRect(x: 0, y: 40, width: headerBar.frame.width, height: headerBar.frame.height))
        }
    }

How can I solve this problem?

I ran on the main thread but there was no change.

@IBOutlet var headerBar: UINavigationBar!
let screenHeight = UIScreen.main.bounds.size.height
    override func viewDidLoad() {
        super.viewDidLoad()
        DispatchQueue.main.async {
            if self.screenHeight > 667 {
                self.headerBar = UINavigationBar(frame: CGRect(x: 0, y: 54, width: self.headerBar.frame.width, height: self.headerBar.frame.height))
            } else {
                self.headerBar = UINavigationBar(frame: CGRect(x: 0, y: 40, width: self.headerBar.frame.width, height: self.headerBar.frame.height))
            }
        }
    }

Headerbar Area Viewed from Main Storyboard

NOTE: This header bar is obscured by the navigation controller bar in the picture. But I'm hiding the navigation controller bar in the code.

call your condition in main thread. or else call in viewDidAppear — Anbu.Karthik, Nov 12 '19 at 07:10
@Anbu.Karthik I ran on the main thread but there was no change. — iosbegindevel, Nov 12 '19 at 07:16

Anbu.Karthik · Accepted Answer · 2019-11-12T07:34:44.120

1

try this

    override func viewDidLoad() {
        super.viewDidLoad()
        DispatchQueue.main.async {
             let screenHeight = UIScreen.main.bounds.size.height
             let bounds = self.headerBar.bounds
           self.headerBar.frame = CGRect(x: 0, y: self.screenHeight > 667 ? 54 : 40, width:bounds.width, height: bounds.height )

        }
    }

edited Nov 12 '19 at 07:34

answered Nov 12 '19 at 07:25

Anbu.Karthik

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Thank you. Can I ask you one more question? – iosbegindevel Nov 12 '19 at 07:33
@iosbegindevel - yes sure – Anbu.Karthik Nov 12 '19 at 07:33
I'd like to make the header bar transparent. But it doesn't work. headerBar.backgroundColor = UIColor.black.withAlphaComponent(0) – iosbegindevel Nov 12 '19 at 07:33
@iosbegindevel - see this for help : [Transparent UINavigationBar in Swift](https://stackoverflow.com/questions/30545663/transparent-uinavigationbar-in-swift/30545730) – Anbu.Karthik Nov 12 '19 at 07:37
Thank you very much. I'm admiring your – iosbegindevel Nov 12 '19 at 07:49

how to adjust the position of the UINavigationBar in swift5?

I ran on the main thread but there was no change.

Headerbar Area Viewed from Main Storyboard

1 Answers1