In Espresso, how to avoid AmbiguousViewMatcherException when multiple views match

Question

Having gridView which has some images. The gridView\'s cell comes out from same predefined layout, which has same id and desc.

R.id.item_image == 2131

Answer 1

I created a ViewMatcher which matches the first view it finds. Maybe it is helpful for somebody. E.g. when you don't have an AdapterView to use onData() on.

/**
 * Created by stost on 15.05.14.
 * Matches any view. But only on first match()-call.
 */
public class FirstViewMatcher extends BaseMatcher {


   public static boolean matchedBefore = false;

   public FirstViewMatcher() {
       matchedBefore = false;
   }

   @Override
   public boolean matches(Object o) {
       if (matchedBefore) {
           return false;
       } else {
           matchedBefore = true;
           return true;
       }
   }

   @Override
   public void describeTo(Description description) {
       description.appendText(" is the first view that comes along ");
   }

   @Factory
   public static  Matcher firstView() {
       return new FirstViewMatcher();
   }
}

Use it like this:

 onView(FirstViewMatcher.firstView()).perform(click());