ListView.getItemAtPosition(i) 在 RecyclerView 中等效?

问题描述

我正在从由 CursorAdapter 支持的 ListView 迁移到由 shywim 的 CursorRecyclerAdapter.

I'm migrating from a ListView backed by a CursorAdapter, to a RecyclerView backed by shywim's CursorRecyclerAdapter.

我在迁移用于返回游标对象的这部分时遇到问题:

I'm having trouble migrating this part that used to return a cursor object:

(MyCursor)mListView.getItemAtPosition(i)

如何访问 RecyclerView 中特定位置的光标?谢谢.

How to get access to cursor at specific position inside RecyclerView? Thanks.

推荐答案

遗憾的是它不是 RecyclerView 的一部分.为了克服它，我定义了一个接口:

Unfortunately it is not part of the RecyclerView. To overcome it I define an interface:

  public interface OnItemClickListener {
        public void onItemClick(View view, int position);
  }

ViewHolder 实现了 View.OnClickListener，它的构造函数采用了一个实现了我的 OnItemClickListener 接口的对象:

The ViewHolder implements the View.OnClickListener, and its constructor takes an object that implements my OnItemClickListener interface:

 public static class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {

    private OnItemClickListener mListener;

    public ViewHolder(View itemView) {
        super(itemView);
        itemView.setOnClickListener(this);

    }

     public ViewHolder(View itemView, OnItemClickListener listener) {
        this(itemView);
        mListener = listener;
    }


    @Override
    public void onClick(View v) {
        if (mListener != null) {
            mListener.onItemClick(v, getPosition());
        }
    }

当您单击该行时，我将通过侦听器转发视图单击的视图及其位置

When you click on the row, I forward trough the listener the view clicked and its position

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