Call method from Kotlin class

Question

I have an util Kotlin class where I set toolbar title, hide or show toolbar depends on the fragment:

class MyToolbarUtils() {

    fun hideToolbar(activity: Activity) {
        (activity as MainActivity).supportActionBar!!.hide()
    }

    fun showToolbar(activity: Activity, tag: String) {
        setToolbarTitle(tag, activity)
        (activity as MainActivity).supportActionBar!!.show()
    }

    fun setToolbarTitle(tag: String, activity: Activity) {
        var title = ""
        when (tag) {
            "Main_fragment" -> title = activity.resources.getString(R.string.Main_screen)
            "Add_note" -> title = activity.resources.getString(R.string.Add_note)
        }
        activity.title = title
    }
}

how to call showToolbar(...) from Fragment? I just tried MyToolbarUtils.showToolbar(..) but it can not be possible

only one way I discover is:

val setToolbarTitle = MyToolbarUtils()
setToolbarTitle.showToolbar(activity, tag)

but there must be better way to do that..

Answer 1

Convert your class into an object which is supposed to work similarly to java static methods.

You can get more info here: https://kotlinlang.org/docs/reference/object-declarations.html#object-declarations