any method to wait until invisible progressbar in espresso test?

Issue

Eg. I have created two activities and second activities contain recycler item list and progress bar. until finish API call we are waiting for a response and shows progress bar

Solution

So, you want to wait until your ProgressBar is hidden. You can either create an idling resource or use a custom ViewAction as this one:

/**
 * Perform action of waiting until the element is accessible & not shown.
 * @param viewId The id of the view to wait for.
 * @param millis The timeout of until when to wait for.
 */
public static ViewAction waitUntilNotShown(final int viewId, final long millis) {
    return new ViewAction() {
        @Override
        public Matcher<View> getConstraints() {
            return isRoot();
        }

        @Override
        public String getDescription() {
            return "wait for a specific view with id <" + viewId + "> is hidden during " + millis + " millis.";
        }

        @Override
        public void perform(final UiController uiController, final View view) {
            uiController.loopMainThreadUntilIdle();
            final long startTime = System.currentTimeMillis();
            final long endTime = startTime + millis;
            final Matcher<View> viewMatcher = withId(viewId);

            do {
                for (View child : TreeIterables.breadthFirstViewTraversal(view)) {
                    // found view with required ID
                    if (viewMatcher.matches(child) && !child.isShown()) {
                        return;
                    }
                }

                uiController.loopMainThreadForAtLeast(50);
            }
            while (System.currentTimeMillis() < endTime);

            // timeout happens
            throw new PerformException.Builder()
                    .withActionDescription(this.getDescription())
                    .withViewDescription(HumanReadables.describe(view))
                    .withCause(new TimeoutException())
                    .build();
        }
    };
}

And you can use it this way:

onView(isRoot()).perform(waitUntilNotShown(R.id.theIdToWaitFor, 5000));

changing theIdToWaitFor with the specific id of your ProgressBar and updating the timeout of 5 secs (5000 millis) if necessary.

However, depending on which test you are doing, if this is not an integration test it's better not to make real api calls.

Answered By - jeprubio