Espresso: how to scroll to the bottom of ScrollView

Question

How is it possible to scroll down to the bottom of ScrollView in Espresso test? Thanks!

score 50 · Accepted Answer · answered May 22 '15 at 06:54

50

If at the bottom of the ScrollView you need to find a view and match something against it, then simply perform the scrollTo() action on it, before any other actions that require it to be displayed.

onView(withId(R.id.onBottomOfScrollView))
    .perform(scrollTo(), click());

Note: scrollTo will have no effect if the view is already displayed so you can safely use it in cases when the view is displayed

answered May 22 '15 at 06:54

appoll

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I haven't tried that, but give it a shot and write a new question with the issue – appoll Jul 24 '15 at 22:39
4

works only if you know your child elements - what to do if you dont know the last element? – PKAP Aug 19 '15 at 12:24
3

`perform(swipeDown())`, that saved my day! – Thuy Trinh Sep 15 '17 at 08:28
1

@IgorGanapolsky Take a look at https://medium.com/@devasierra/espresso-nestedscrollview-scrolling-via-kotlin-delegation-5e7f0aa64c09 – Tony Aug 22 '18 at 22:53

score 21 · Answer 2 · answered Nov 14 '17 at 08:29

21

for me when using nestedScrollview i just swipeUp (if you want to go down)..here is an example call:

onView(withId(R.id.nsv_container))
                .perform(swipeUp());

answered Nov 14 '17 at 08:29

j2emanue

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score 13 · Answer 3 · edited Jan 08 '19 at 10:42

For completeness (based on Morozov's answer), you can pass a custom ViewAction instead of scrollTo(), which allows to use NestedScrollView:

ViewAction customScrollTo = new ViewAction() {

    @Override
    public Matcher<View> getConstraints() {
        return allOf(withEffectiveVisibility(ViewMatchers.Visibility.VISIBLE), isDescendantOfA(anyOf(
            isAssignableFrom(ScrollView.class),
            isAssignableFrom(HorizontalScrollView.class),
            isAssignableFrom(NestedScrollView.class)))
        );
    }

    @Override
    public String getDescription() {
        return null;
    }

    @Override
    public void perform(UiController uiController, View view) {
        new ScrollToAction().perform(uiController, view);
    }
};

And use it like this:

onView(withId(R.id.onBottomOfScrollView)).perform(customScrollTo, click());

score 1 · Answer 4 · answered Feb 02 '17 at 10:13

1

Also u can try:

public Matcher<View> getConstraints() {
return allOf(withEffectiveVisibility(ViewMatchers.Visibility.VISIBLE), isDescendantOfA(anyOf(
        isAssignableFrom(ScrollView.class), isAssignableFrom(HorizontalScrollView.class), isAssignableFrom(NestedScrollView.class))));

If you have a view inside android.support.v4.widget.NestedScrollView instead of scrollView scrollTo() does not work.

answered Feb 02 '17 at 10:13

Morozov

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Where do I put/call this method? – User Jun 30 '17 at 15:45
I believe this answer is missing information for whoever is not fully aware. Please check https://stackoverflow.com/questions/35272953/espresso-scrolling-not-working-when-nestedscrollview-or-recyclerview-is-in-coor for the full answer – Rafael Ruiz Muñoz Feb 01 '18 at 13:09

Espresso: how to scroll to the bottom of ScrollView

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