if child not exist than hide arrow

[vadol]

If child item not exist than hide down arrow and call intent

[gyqsophila]

you need make a judge in your own view holder in method createNodeView() ,like this :

        event = value.event;
        if (hasChildItem(event)) {
            arrow.setImageResource(R.mipmap.ic_arrow_right_black_24dp);
        }

and you also need to make a judge again in method toggle() ,like:

    @Override
    public void toggle(boolean active) {
        if (hasChildItem(event)) {
            arrow.setImageResource(active ?
                    R.mipmap.ic_arrow_down_black_24dp : R.mipmap.ic_arrow_right_black_24dp);
        }
    }

glad here is some help for you.

[devishell]

in sample： f（node.isLeaf()）{ arowView.setvisiablity(view.invisiable); }