如何在一个RecyclerView一个项目进行编程点击？ [英] How to perform programmatic click on a item in a RecyclerView?

问题描述

您好我有一个使用回收站视图来显示一堆项目的应用程序。现在我想运行列表中的Andr​​oid测试，但我不知道如何设置一个特定项目的纲领性点击。谁能告诉我如何实现这一目标？

Hi I have a app that uses a Recycler view to display a bunch of items. Now I want to run an android test on the list but I don't know how to set a programmatic click on a given item. Can anyone tell me how to achieve this?

推荐答案

您必须从头开始实现它。该RecyclerView缺少一些的一个ListView提供了默认情况下，真棒功能。鉴于此，在适配器必须声明一个接口，用于片段/活动和RecyclerView之间的观察员。

You have to implement it from scratch. The RecyclerView lacks for some of the awesome features that a ListView provides by default. Given this, in the adapter you have to declare an interface for the Observer between Fragment/Activity and the RecyclerView.

附上这个单击事件正确的方法是 onBindViewHolder 。然后在适配器您保持参照 CustomListener 或View.OnClickListener。

The correct method to attach this click event is onBindViewHolder. Then in the adapter you keep the reference to the CustomListener or the View.OnClickListener.

下面是如何做到这一点一个简单的例子：

Here is a quick example on how to do this:

@Override
public void onBindViewHolder(SearchListAdapter.ViewHolder holder, final int position) {
    //Item clicked
    holder.mParent.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            //Select or deselect
            mListener.notify(holder, position);
        }
    });
}

而ViewHolder应该是这样的：

And the ViewHolder should be like:

public class ViewHolder extends RecyclerView.ViewHolder {

    private View mParent;

    public ViewHolder(View itemView) {
        super(itemView);
        mParent = itemView;
    }
}

其中， mParent 是当前行查看。

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