在RecyclerView中以编程方式单击项目 [英] Clicking on item programmatically in RecyclerView

问题描述

我正在加载类别列表，根据选择的类别，我需要在RecyclerView中显示相应类别的产品. 因此，当我第一次启动Fragment时，我需要模拟用户单击默认类别-在这种情况下，它将是第一个.

I am loading a list of categories and depending on which is selected, I need to show the products of the corresponding category in the RecyclerView. So when I first start the Fragment I need to simulate the user clicking in a default category - in this case, it would be the first one.

我该如何执行呢?

推荐答案

没有您的代码，我们不知道您如何实现onClickListener.

Without your code we don't know how you implement your onClickListener.

通常，您在RecyclerView.Adapter的viewHolder中实现并设置onClickListener项.
例如:ViewHolder.itemView.setOnClickListener(listener);

Normally, you implement and set the item onClickListener in the viewHolder of your RecyclerView.Adapter.
For example: ViewHolder.itemView.setOnClickListener(listener);

因此解决方案是您可以使用recyclerView.findViewHolderForAdapterPosition(0).itemView.performClick()

So the solution is you can use recyclerView.findViewHolderForAdapterPosition(0).itemView.performClick()

PS:根据文档，请勿使用findViewHolderForLayoutPosition()

PS: Do not use findViewHolderForLayoutPosition() according to the Doc

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