How to change UIStatusBarStyle from .lightContent to .default after scrolling starts in a table view?

Question

I am trying to change the preferredStatusBarStyle of a table view controller from .lightContent to .default when scrolling starts? Here is the initial state :

And this is the final state : I am relatively new to iOS development. Please provide details on how to achieve this?

Thank you!

Answer 1

You need to find a way to store a variable that is of type UIStatusBarStyle somewhere in your view controller.

Then in your view controller you add:

var preferredStatusBarStyle: UIStatusBarStyle {
    return statusBarStyleVariable // This is the variable you created
}

When you want to switch the styles, just change the value of your statusBarStyleVariable and do setNeedsStatusBarAppearanceUpdate()

EDIT: This can be your variable code:

var statusBarStyleVariable: UIStatusBarStyle {
    didSet {
        setNeedsStatusBarAppearanceUpdate()
    }
}

This way, whenever you change the value of the your variable, it'll refresh automatically.

Answer 2

I found out the solution after scouting for a while....

If you want to change the status bar style any time after the view has appeared you can use this:

In file info.list add row: View controller-based status bar appearance and set it to YES

var viewIsDark = Bool()

func makeViewDark() {

viewIsDark = true
setNeedsStatusBarAppearanceUpdate()
}

func makeViewLight() {

viewIsDark = false
setNeedsStatusBarAppearanceUpdate()
}

override var preferredStatusBarStyle: UIStatusBarStyle {

if viewIsDark {
    return .lightContent 
} else {
    return .default 
} 
}

The above code works if your view controller isn't embedded in a Navigation Controller. If it is embedded in a Navigation Controller, add this to the bottom of the view controller :

 extension UINavigationController
{
    override open var preferredStatusBarStyle: UIStatusBarStyle {
 // code goes here
     }
 }