Is there a way to pass a function reference between activities?

Question

is there a way of bundling function references in Kotlin and Android so that the functions can be called from other fragments? For instance, my fragment factory method look

Answer 1

Maybe too late but:

Have you tried to put the val callback inside the companion object? Solution may be something like:

companion object {
    private lateinit var callback 

    fun newInstance(tryAgainFunction: () -> Unit): TimeOutHandlerFragment {
        val fragment = TimeOutHandlerFragment()
        this.callback = tryAgainFunction
        return fragment
    }
}

override fun onViewCreated(view: View?, savedInstanceState: Bundle?) {
    super.onViewCreated(view, savedInstanceState)
    btnTryAgain.setOnClickListener { callback.invoke() }
}