public override TreeView.NodeViewHolder OnCreateViewHolder(ViewGroup parent, TreeView tree, View itemView, int viewType)
{
TreeViewAdapter adapter = new TreeViewAdapter();
tree.SetAdapter(adapter);
return(new NodeViewHolder(tree, itemView));
}
protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
SetContentView(Resource.Layout.activity_main);
TreeView treeView = FindViewById <TreeView>(Resource.Id.treeView);
TreeViewAdapter adapter = new TreeViewAdapter();
treeView.SetAdapter(adapter);
TreeViewNode[] items =
{
new TreeViewNode(true),
new TreeViewNode(true),
new TreeViewNode(true),
new TreeViewNode(true),
};
items[1].AddChild(new TreeViewNode(true));
items[1].AddChild(new TreeViewNode(true));
items[1][1].AddChild(new TreeViewNode(true));
items[1].AddChild(new TreeViewNode(true));
TreeViewNode item = new TreeViewNode(true);
item.AddChild(new TreeViewNode(true));
items[2].AddChild(item);
adapter.AddNodes(items);
adapter.Click += (object sender, TreeView.ClickEventArgs e) =>
{
System.Console.WriteLine($"Click. NodeId:{e.Node.Id}, Level:{e.Level}, Position:{e.Position}, NodeType{e.NodeType}");
};
adapter.LongClick += (object sender, TreeView.ClickEventArgs e) =>
{
System.Console.WriteLine($"LongClick. NodeId:{e.Node.Id}, Level:{e.Level}, Position:{e.Position}, NodeType{e.NodeType}");
e.Node.AddChild(new TreeViewNode(false));
adapter.NotifyDataSetChanged();
};
}