“I understand that the default navigation bar can be turned on or off depending on the device settings. I want to set an appropriate height for a custom navigation bar in both scenarios.”

For example:

If the custom navigation bar height is 50px:
When the default navigation bar is on: 50px + 48px
When the default navigation bar is off: 50px

thanks

• using

• kotlin
• compose
• API 30 (R, Android 11.0)

i tried

val hasSoftKey = ViewConfiguration.get().hasPermanentMenuKey()

fun Activity.isNavigationBarVisible(): Boolean {
    val decorView = window.decorView as ViewGroup
    var isNavBarVisible = false
    decorView.setOnHierarchyChangeListener(object : ViewGroup.OnHierarchyChangeListener {
       override fun onChildViewAdded(parent: View?, child: View?) {
            isNavBarVisible = isNavigationBarPresent(child)
        }

        override fun onChildViewRemoved(parent: View?, child: View?) {}
    })
    return isNavBarVisible
}

private fun isNavigationBarPresent(view: View?): Boolean {
    return view?.id != View.NO_ID && view?.resources?.getResourceName(view.id)?.contains("navigationBarBackground") == true
}