Navigation deep link emulation

BuildNode.kt

fun NavDestination.buildExplicitly(): IntArray {
    val hierarchy = ArrayDeque<NavDestination>()
    var current: NavDestination? = this
    do {
        val parent = current!!.parent
        if (parent == null || parent.startDestination != current.id) {
            hierarchy.addFirst(current)
        }
        current = parent
    } while (current != null)
    val deepLinkIds = IntArray(hierarchy.size)
    var index = 0
    for (destination in hierarchy) {
        deepLinkIds[index++] = destination.id
    }
    return deepLinkIds
}

Usage.kt

val graph = NavInflater(this, PermissiveNavigatorProvider()).inflate(R.navigation.home_graph)

val node = graph.findNode(R.id.home)
val res = node!!.buildExplicitly()
intent.putExtra("android-support-nav:controller:deepLinkIds", res)

// res is graph, backstack ids, destination
// res is intArrayOf(R.id.home_graph_xml, R.id.home)