Espresso Nested Recycler Views UI 测试

Question

我在垂直RecyclerView 中有一个水平RecyclerView。我正在使用我在其他问题上找到的这段代码：

onView(allOf(isDescendantOfA(withRecyclerView(R.id.parentVerticalRecyclerView).atPosition(parentPosition)),
             isDescendantOfA(withRecyclerView(R.id.childHorizontalRecyclerView).atPosition(childPosition)),
                (withText("USA"))))
                .perform(click());

// It is not working for parentPosition > 0

但这仅适用于父级RecyclerView 的第一行。

如何点击父RecyclerView第二行子RecyclerView上的元素？

Answer 1

我终于找到了解决办法：

onView(allOf(
         withId(R.id.childHorizontalRecyclerView),
         withParent(
           withRecyclerView(R.id.parentVerticalRecyclerView).atPosition(2)
         )
       )
).perform(RecyclerViewActions.actionOnItemAtPosition(3, scrollTo()))
.check(matches(hasDescendant(withText("USA"))));