DynamicTree - Android view library that represents tree structure data.

// For Eaxample

data class Node(
    override val uniqueKey: String,  // you should override
    override val child: List<Node>?,  // you should override
    val personInfo: Person? // or anything more
) : UniqueKey

data class Person(
    val age: Int,
    val number: String
)

 dt_view.treeData = listOf<Node>(...)

class TestAdapter: DynamicTreeAdapter<Node>(
    R.layout.item_group, // layout id for Group item view
    R.layout.item_last_node // layout id for Last node item view
) {
    override fun isTargetNode(item: Node): Boolean {
        TODO("Used to check whether it is the last node or not")
    }

    override fun bindDefultLastNodeView(view: View, item: Node) {
        TODO("Bind default last node view ")
    }

    override fun bindDefaultGroupView(view: View, item: Node) {
        TODO("Bind default group item view ")
    }

    override fun bindClickedGroupView(view: View, item: Node) {
        TODO("Bind group item view when clicked")
    }

    override fun onClickGroupItem(groupItemView: View, item: Node) {
        TODO("Called when group item clicked")
    }

    override fun onClickLastNodeItem(lastNodeItemView: View, item: Node) {
        TODO("Called when last node clicked")
    }
}

    override fun onCreate(savedInstanceState: Bundle?) {
        ...
        val treeList: List<Node> = ...
        dt_view.treeData = treeList
        dt_view.orgAdapterGenerator = { MyOrgGroupAdapter() }
        dt_view.render()
    }

    override fun onBackPressed() {
        if (dt_view.canGoBack()) {
            dt_view.goBack()
        } else {
            super.onBackPressed()
        }
    }