小编A G*_*ves的帖子

我想知道如何在 FirebaseUI 提供的 recyclerview 项目中放置上下文菜单，并且能够在知道长按哪个项目的情况下执行一些操作。因为当我尝试在我的持有者类上使用 onCreateContextMenu 时，我的 ContextMenuInfo 带有空值。这是我的持有人课程：

public class PlayerHolder extends RecyclerView.ViewHolder implements View.OnCreateContextMenuListener {
    //private static final String TAG = PlayerHolder.class.getSimpleName();
    public TextView playerName;
    public TextView playerAge;

    public PlayerHolder(View itemView) {
        super(itemView);
        playerName = (TextView) itemView.findViewById(R.id.player_name);
        playerAge = (TextView) itemView.findViewById(R.id.player_age);
        itemView.setOnCreateContextMenuListener(this);
    }

    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
        menu.add(0, 1, 0, "Edit");//groupId, itemId, order, title
        menu.add(0, 2, 0, "Share");
        menu.add(0, 3, 0, "Delete");
    }

    //@Override
    public boolean onContextItemSelected(MenuItem item) {
        AdapterView.AdapterContextMenuInfo info = (AdapterView …