assertDisplayed(MainActivity.class)

[rocboronat]

Do a sexy way to assure that the app is showing a given Activity

[alorma]

With Espresso intents?

[Sloy]

Fiuf! I remember doing some hacks to accomplish this, and we finally decided to change it to check for a specific root view instead (each activity would have a defined root view id).

But we can revisit this, maybe our improved knowledge of Espresso will let us find a good solution 💪

[alorma]

We use this:

@NonNull
private Matcher<Intent> getMatcherOpenMainActivity() {
     return hasComponent(DiscoverActivity.class.getName());
}

With Espresso intents is easy to do, but it will make barista depends on it

[Sloy]

Revisiting some code from some library of mine I just saw an apparently clean way to do this. I'm not sure where did I get the idea from, but it something like this:

fun getCurrentActivity(): Activity? {
    var activity: Activity? = null

    getInstrumentation().waitForIdleSync()
    getInstrumentation().runOnMainSync {
        val activities = ActivityLifecycleMonitorRegistry.getInstance().getActivitiesInStage(Stage.RESUMED)
        if (activities.isEmpty()) {
            activity = null
        } else {
            activity = Iterables.getOnlyElement(activities)
        }
    }
    return activity
}

It doesn't depend on any view or ViewAction to get the Context, nor requires to add any id to the layout root.

I'm not sure how flaky would it be, I guess we can trust in waitForIdleSync and the ActivityLifecycleMonitorRegistry. Right?

I'll leave it here in case anyone want to contribute and add it to the API.

[rohitkaradkar]

hi @Sloy looks like we've added the dependency on espresso intents so, are we still looking to add this feature?