How to change NavigationBarColor while app running

Question

I use this to set NavigationBarColor before it run:

 UINavigationBar.appearance().barTintColor = Color.NavigationBackground

But in the program,I want to change the NavigationBarColor, So I use this again

 UINavigationBar.appearance().barTintColor = Color.Black

But nothing happen, It still white(Color.Background)
Color is a struct that I defined.
How to change the color correctly? I want to achieve like this:Trying to reload view controller to update the current theme

Do you want to change navigation bar color or table view background???? — NickCoder, Jun 10 '19 at 10:04
Possible duplicate of [Changing navigation bar color in Swift](https://stackoverflow.com/questions/24687238/changing-navigation-bar-color-in-swift) — NickCoder, Jun 10 '19 at 10:13
UITableView,I call it NavigationBar. I want to achieve some kind like this,but it is not working.https://stackoverflow.com/questions/55697172/trying-to-reload-view-controller-to-update-the-current-theme — , Jun 10 '19 at 10:16
only navigation color or whole app color(that would be themes) — NickCoder, Jun 10 '19 at 10:40
can you edit your question and briefly expalin what do you want to achieve — NickCoder, Jun 10 '19 at 10:41
If you have answered your own question please mention your answer below and also if one of the below answers is correct please mark it as answered — NickCoder, Jun 10 '19 at 12:25

NickCoder · Accepted Answer · 2019-06-10T10:55:31.843

1

if you want each screen to have different color add below line with color of your choice in view will appear and it will change color for each screen.

Swift 4.2:

//To change Navigation Bar Background Color
UINavigationBar.appearance().barTintColor = UIColor.blue
//To change Back button title & icon color
UINavigationBar.appearance().tintColor = UIColor.white
//To change Navigation Bar Title Color
UINavigationBar.appearance().titleTextAttributes = [NSAttributedString.Key.foregroundColor: UIColor.white]

add it in view will appear and then you can see it changing.

override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)
    self.navigationController?.navigationBar.barTintColor = .orange
}

edited Jun 10 '19 at 10:55

answered Jun 10 '19 at 10:06

NickCoder

1,504
2
23
35

I use this and nothing happen, the color stay the same. How to reload it? – Jun 10 '19 at 10:13
on which action do you want to change color? – NickCoder Jun 10 '19 at 10:42

score 0 · Answer 2 · answered Jun 10 '19 at 10:02

0

if you want to change the color of navigation bar color

navigationController?.navigationBar.barTintColor = UIColor.black

answered Jun 10 '19 at 10:02

Jins George

121
6

score 0 · Answer 3 · answered Jun 10 '19 at 10:16

0

Use the appearance API, and barTintColor color.

UINavigationBar.appearance().barTintColor = UIColor.red

answered Jun 10 '19 at 10:16

Deviyani Swami

749
8
17

score 0 · Answer 4 · answered Jun 10 '19 at 10:48

In your ViewController's viewWillAppear(_:) simply set navigationBar's barTintColor as your required color, i.e.

override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)
    self.navigationController?.navigationBar.barTintColor = .red
}

score 0 · Answer 5 · answered Jun 10 '19 at 11:12

Use this code to set UINavigationBar color initially in your Appdelegate’s didFinishLaunchingWithOptions.

    UINavigationBar.appearance().isTranslucent = false
    UINavigationBar.appearance().backgroundColor = Color.Background
    UINavigationBar.appearance().barTintColor = Color.Background
    UINavigationBar.appearance().tintColor = UIColor.white

And when you want to change color of UINavigationBar within app, just use these lines of code. Let’s say change color is your button action.

    @IBAction func changeThemeColor(_ sender: UIButton) {

        self.navigationController?.navigationBar.backgroundColor = Color.Black
self.navigationController?.navigationBar.barTintColor = Color.Black
    }

How to change NavigationBarColor while app running

5 Answers5