上下文菜单在回收站视图中不起作用

Question

我正在尝试在回收站视图中添加上下文菜单，但它不起作用。在我的适配器中，我添加了以下

  public class ViewHolder extends RecyclerView.ViewHolder implements 
   View.OnCreateContextMenuListener {
    TextView mTitle, mDescription;

    public ViewHolder(View itemView) {
        super(itemView);
        mTitle = itemView.findViewById(R.id.textViewTitle);
        mDescription = itemView.findViewById(R.id.textViewDescription);
        itemView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                int position = getAdapterPosition();
                String title = mTitle.getText().toString();
                String descrpition = mDescription.getText().toString();
                if (mClickListener!=null)
                    mClickListener.onItemClick(v, position, title, descrpition);
            }
        });
        itemView.setOnLongClickListener(new View.OnLongClickListener() {
            @Override
            public boolean onLongClick(View v) {
                int position = getAdapterPosition();
                if (onRecyclerViewLongClickListner!=null)
                    onRecyclerViewLongClickListner.onItemLongClick(position);
                return true;
            }
        });
        itemView.setOnCreateContextMenuListener(this);
    }

    @Override
    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
        menu.setHeaderTitle("Select options");
        menu.add(0,v.getId(),0,"Option1");
    }
}

并在 mainActivity 中添加了 registerForContextMenu(recyclerView);

Answer 1

问题出在您的 OnLongClickListener 上。它会消耗长按事件，因为您 return 是真的。

来自 onLongClick 方法文档：

true if the callback consumed the long click, false otherwise.

由于您需要在 onLongClick 中创建 ContextMenu，因此您必须从 OnLongClickListener return false 以便系统可以创建 ContextMenu.

更新您的 OnLongClickListener

  itemView.setOnLongClickListener(new View.OnLongClickListener() {
        @Override
        public boolean onLongClick(View v) {
            int position = getAdapterPosition();
            if (onRecyclerViewLongClickListner!=null)
                onRecyclerViewLongClickListner.onItemLongClick(position);
              return false;
        }
    });

上下文菜单在回收站视图中不起作用

Context menu not working in recycler view

android

contextmenu