浓咖啡：在ViewPager内单击ListView中的第一项

Question

Is it possible to click the first item of a ListView inside a ViewPager?

I already tried to get it working like this:

onData(anything()).inAdapterView(withId(R.id.myListView)).atPosition(0).perform(click()); .

But as I understand from here: Testing ViewPager with Espresso. How perfom action to a button of an Item? you cant use onData for a ViewPager. Plus if I run the Test i get a AmbiguousViewMatcherException for multiple matches.

android.support.test.espresso.AmbiguousViewMatcherException: 'with id: my.awesome.app:id/myListView' matches multiple views in the hierarchy. Problem views are marked with '****MATCHES****' below.

If i run the test like this onView(allOf(withId(R.id.myListView),isDisplayed())).perform(click()); the first item is never clicked.

Is there another way to click the first item of the list?

Answer 1

try this:

onData(anything())
    .inAdapterView(allOf(withId(R.id.myListView), isCompletelyDisplayed()))
    .atPosition(0).perform(click());

As you have an AmbiguousViewMatcherException this might work matching the "myListView" which is displayed on the screen if I'm not wrong.