测试RecyclerView:RecyclerViewActions滚动不够远 [英] Testing a RecyclerView: RecyclerViewActions isn't scrolling far enough

问题描述

我希望我的意式浓缩咖啡测试向下滚动RecyclerView，直到看到某个视图并单击它为止.

I want my espresso test to scroll a RecyclerView down until it's sees a certain view and clicks it.

因此，我正在使用RecyclerViewActions:

onView(withId(R.id.recycler)).perform(
          RecyclerViewActions.scrollTo<RecyclerView.ViewHolder>(
                  hasDescendant(withText(R.string.title_item_x))
          )
)
Thread.sleep(2000)
onView(withId(R.id.recycler)).perform(
          RecyclerViewActions.actionOnItem<RecyclerView.ViewHolder>(
                  hasDescendant(withText(R.string.title_item_x)),
                  click()
          )
)

该测试将RecyclerView向下滚动，但仅滚动所需数量的50％.点击通话因此而崩溃.

The test scrolls the RecyclerView down, but only about 50% of the needed amount. The click call crashes because of it.

有人遇到过类似的事情吗?

Does somebody encountered something similar?

谢谢！

推荐答案

我已经找到了视图操作未成功的原因:

I've found the reason why the view action wasn't successul:

该应用程序具有可折叠的工具栏，在我开始滚动操作之前已对其进行了扩展.当我执行滚动操作时，工具栏首先折叠，然后滚动了回收站视图.因此，回收站视图滚动到很少.

The app has a collapsible toolbar which was expanded before I started the scroll action. When I performed the scroll action the toolbar collapsed first and then the recycler view scrolled. Therefore the recycler view scrolled to little.

我找到的解决方案是，我首先使用自定义AppBarViewAction折叠工具栏.在此处

The solution I found is that I collapse the toolbar first with a custom AppBarViewAction. The solution is found here

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