kotlin - 类型推断失败 : RecyclerViewActions. scrollTo()

Question

来自java:

onView(withId(R.id.recyclerView)).perform(RecyclerViewActions.scrollTo(
    hasDescendant(withText(artistResult.getNameVariations().get(0)))));

尝试转换为 Kotlin:

onView(withId(R.id.recyclerView)).perform(RecyclerViewActions.scrollTo(
    hasDescendant(withText(artistResult.nameVariations[0]))))

我得到了这个堆栈跟踪:

Error:(63, 71) Type inference failed: Not enough information to infer parameter VH in fun <VH : RecyclerView.ViewHolder!> scrollTo(itemViewMatcher: Matcher<View!>!): RecyclerViewActions.PositionableRecyclerViewAction!
Please specify it explicitly.

我不完全确定在哪里可以明确指定“它”。之前出现这种情况是因为我没有正确初始化值，但在这里我调用了一个方法。有什么想法吗？

Answer 1

我需要添加 <RecyclerView.ViewHolder>至scrollTo

onView(withId(R.id.recyclerView)).perform(
    RecyclerViewActions.scrollTo<RecyclerView.ViewHolder>(
    hasDescendant(withText(artistResult.nameVariations[0]))))