Android - Espresso - scrolling to a non-list View item

Question

Is there a general approach for scrolling to non-list View items that are not yet visible on the screen?

Without any precautions, Espresso will indicate that \"No V

Answer 1

Code that worked for me is:

ViewInteraction tabView = onView(allOf(
    childAtPosition(childAtPosition(withId(R.id.bottomControlTabView), 0), 1), 
    isDisplayed()));
tabView.perform(click());
tabView.perform(click());

public static Matcher childAtPosition(final Matcher parentMatcher, 
                                            final int position) {

        return new TypeSafeMatcher() {
            @Override
            public void describeTo(Description description) {
                description.appendText("Child at position " + position + " in parent ");
                parentMatcher.describeTo(description);
            }

            @Override
            public boolean matchesSafely(View view) {
                ViewParent parent = view.getParent();
                return parent instanceof ViewGroup && parentMatcher.matches(parent)
                        && view.equals(((ViewGroup) parent).getChildAt(position));
            }
        };
    }