MaterialDrawer CustomDrawerItem

Question

如何在MaterialDrawer 库中创建自定义DrawerItem（1. 我需要切换 2. 我需要布尔状态指示器）？ Here MaterialDrawer 作者说，创建自定义 DrawerItem 是一项非常容易的任务，但我在这个库的文档中找不到它。

Answer 1

要实现CustomDrawerItem，您必须实现IDrawerItem 接口。这定义了所有需要的方法。只需仔细查看DividerDrawerItem 或SectionDrawerItem，它们都更简单一些。

public class DividerDrawerItem extends AbstractDrawerItem<DividerDrawerItem> {
    @Override
    public String getType() {
        return "DIVIDER_ITEM";
    }

    @Override
    @LayoutRes
    public int getLayoutRes() {
        return R.layout.material_drawer_item_divider;
    }

    @Override
    public void bindView(RecyclerView.ViewHolder holder) {
        Context ctx = holder.itemView.getContext();

        //get our viewHolder
        ViewHolder viewHolder = (ViewHolder) holder;

        //set the identifier from the drawerItem here. It can be used to run tests
        holder.itemView.setId(getIdentifier());

        //define how the divider should look like
        viewHolder.view.setClickable(false);
        viewHolder.view.setEnabled(false);
        viewHolder.view.setMinimumHeight(1);

        //set the color for the divider
        viewHolder.divider.setBackgroundColor(UIUtils.getThemeColorFromAttrOrRes(ctx, R.attr.material_drawer_divider, R.color.material_drawer_divider));

        //call the onPostBindView method to trigger post bind view actions (like the listener to modify the item if required)
        onPostBindView(this, holder.itemView);
    }

    @Override
    public ViewHolderFactory getFactory() {
        return new ItemFactory();
    }

    public static class ItemFactory implements ViewHolderFactory<ViewHolder> {
        public ViewHolder factory(View v) {
            return new ViewHolder(v);
        }
    }

    private static class ViewHolder extends RecyclerView.ViewHolder {
        private View view;
        private View divider;

        private ViewHolder(View view) {
            super(view);
            this.view = view;
            this.divider = view.findViewById(R.id.material_drawer_divider);
        }
    }
}