Using Espresso to click view inside RecyclerView item

Question

How can I use Espresso to click a specific view inside a RecyclerView item? I know I can click the item at position 0 using:

onView(withId(R.i

Answer 1

You can even generalize this approach to support more actions not only click. Here is my solution for this:

fun  recyclerChildAction(@IdRes id: Int, block: T.() -> Unit): ViewAction {
  return object : ViewAction {
    override fun getConstraints(): Matcher {
      return any(View::class.java)
    }

    override fun getDescription(): String {
      return "Performing action on RecyclerView child item"
    }

    override fun perform(
        uiController: UiController,
        view: View
    ) {
      view.findViewById(id).block()
    }
  }
 
}

And then for EditText you can do something like this:

onView(withId(R.id.yourRecyclerView))
        .perform(
            actionOnItemAtPosition(
                0,
                recyclerChildAction(R.id.editTextId) { setText("1000") }
            )
        )