Espresso: How To Scroll To The Bottom Of Scrollview

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

Solution 1:

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

Solution 2:

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());

Solution 3:

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

ViewAction customScrollTo = newViewAction() {

    @OverridepublicMatcher<View> getConstraints() {
        returnallOf(withEffectiveVisibility(ViewMatchers.Visibility.VISIBLE), isDescendantOfA(anyOf(
            isAssignableFrom(ScrollView.class),
            isAssignableFrom(HorizontalScrollView.class),
            isAssignableFrom(NestedScrollView.class)))
        );
    }

    @OverridepublicStringgetDescription() {
        returnnull;
    }

    @Overridepublicvoidperform(UiController uiController, View view) {
        newScrollToAction().perform(uiController, view);
    }
};

And use it like this:

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

Solution 4:

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.