Android M Light and Dark status bar programmatically - how to make it dark again?

Question

In the Android M we have ability to make status bar icons dark. To do that we can specify attribute in the theme\'s xml:

Answer 1

I put together this simple utility object that allows you to change status bar color and light status bar on/off for within any fragment. However, this relies on using the Android Jetpack Navigation component for navigation (Kotlin):

object StatusBarUtil {
    fun changeStatusBarColor(activity: Activity, @ColorInt color: Int, lightStatusBar: Boolean) {
        activity.window?.let { win ->
            val nav = Navigation.findNavController(activity, R.id.your_nav_host_fragmen /* TODO: Use the ID of your nav host fragment */)
            val currentDest = nav.currentDestination?.id
            val oldColor = win.statusBarColor
            val oldFlags = win.decorView.systemUiVisibility
            win.statusBarColor = color

            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
                var flags = oldFlags
                flags = if (lightStatusBar) {
                    flags or View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR
                } else {
                    flags and View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR.inv()
                }
                win.decorView.systemUiVisibility = flags
            }

            nav.addOnNavigatedListener { _, dest ->
                if (dest.id != currentDest) {
                    win.statusBarColor = oldColor
                    win.decorView.systemUiVisibility = oldFlags
                }
            }
        }
    }
}

To use this, call the following from within any fragment's onViewCreated:

StatusBarUtil.changeStatusBarColor(requireActivity(), someDarkColor, false)