Espresso - How to check if one of the view is displayed

Question

In my test, after one action, there are two possible views which can appear and both of them are correct. How can I check if one of the view is displayed. For a single view I ca

Answer 1

I researched Espresso a bit, and I found this @ Espresso Samples.

1. Search text "Asserting that a view is not displayed". It says "The above approach works if the view is still part of the hierarchy." So I think your code should work but you need to use ViewAssertions also. Using your code, perhaps do this:

   if (ViewAssertions.doesNotExist()) == null) {
      return;
   }
   onMyPageOne.check(matches(isDisplayed()));
   

2. Another technique is check for UI existence. Search for text "Asserting that a view is not present". Using your code, my best suggestion is:

   onMyPageOne.check(doesNotExist());

Note: This calls doesNotExist method.

Their sample code is: onView(withId(R.id.bottom_left)).check(doesNotExist());