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

It's possible to catch the exceptions raised by Espresso like this:

If you want to test if a view is in hierarchy:

try {
    onView(withText("Button")).perform(click());
    // View is in hierarchy

} catch (NoMatchingViewException e) {
    // View is not in hierarchy
}

This exception will be thrown if the view is not in the hierarchy.

Sometimes the view can be in the hierarchy, but we need to test if it is displayed, so there is another exception for assertions, like this:

try {
    onView(withText("Button")).check(matches(isDisplayed()));
    // View is displayed
} catch (AssertionFailedError e) {
    // View not displayed
}