Question

我有一个导航抽屉，里面有一个RecyclerView。单击RecyclerView中的项目时，我可以使用此RecyclerAdapter成功导航到我想要的活动：

public class AdapterNavigation extends RecyclerView.Adapter<AdapterNavigation.Holder> {

    private List<NavigationItem> mItemList;
    private Context mContext;


    //this class takes a context and a list of the items you want to populate into the recycler view
    public AdapterNavigation(Context context, List<NavigationItem> itemList) {
        mItemList = itemList;
        mContext = context;


    }
    @Override
    public Holder onCreateViewHolder(ViewGroup viewGroup, int viewType) {
        //our xml showing how one row looks
        View row = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.recycler_view_navigation, viewGroup, false);


        Holder holder = new Holder(row);
        return holder;
    }

    @Override
    public void onBindViewHolder(Holder holder, final int position) {
        holder.recyclerNavigation.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                final Intent intent;
                switch (position){
                    //specify what activity will launch on click
                    case 0:
                        intent =  new Intent(mContext, Maintenance.class);
                        break;
                    case 1:
                        intent =  new Intent(mContext, Contact.class);
                        break;
                    default:
                        intent =  new Intent(mContext, MainActivity.class);
                        break;
                }

                mContext.startActivity(intent);

            }
        });

        NavigationItem item = mItemList.get(position);

        holder.iconImageView.setImageResource(item.getIcon());
        holder.titleTextView.setText(item.getTitle());
        holder.countTextView.setText(Integer.toString(item.getCount()));


    }

    @Override
    public int getItemCount() {
        return mItemList.size();
    }

    public class Holder extends RecyclerView.ViewHolder {
        protected ImageView iconImageView;
        protected TextView titleTextView;
        protected TextView countTextView;
        protected RelativeLayout recyclerNavigation;

        public Holder(View view) {
            super(view);
            iconImageView = (ImageView) view.findViewById(R.id.iconImageView);
            titleTextView = (TextView) view.findViewById(R.id.titleTextView);
            countTextView = (TextView) view.findViewById(R.id.countTextView);
            //the whole view
            recyclerNavigation = (RelativeLayout) view.findViewById(R.id.recyclerNavigation);
        }

    }



}

现在我要做的是在点击项目之前让导航抽屉关闭。单击Android Gmail应用程序导航菜单中的项目时的外观。

就在此之前：

mContext.startActivity(intent);

我会关闭导航抽屉。

问题是获得对该导航抽屉的引用。我正在考虑从我所拥有的上下文中获取视图，因为这就是我的全部。

有没有办法做到这一点，还是我必须更改我的一些代码？

Answer 1

首先，每次绑定视图时都要创建一个clicklistener。考虑在viewholder的构造函数中将clicklistener设置为this。您可以在侦听器中使用ViewHolder.getAdapterPosition()。

要回答这个问题，您已经将Context传递给适配器，为什么不将它（和视图符号）传递给导航抽屉？

Answer 2

获取抽屉布局的参考，并在mContext.startActivity（intent）之前添加以下行; drawerLayout.closeDrawers（）;

单击导航抽屉中的RecyclerView中的项目后如何关闭导航抽屉

2 个答案: