IdlingResource wait activity after Login

I try to do automatic test with Espresso but I have some problem with the Login test.

My login page is a webview and all times I want to execute this test before execute any other test in order to start to a specific point.

The work flow is

1. WebView1 -> Select an Item
2. Webview2 -> Put user/password

3. Assert if the SplashScreen Opens

   @RunWith(AndroidJUnit4.class) @FixMethodOrder(MethodSorters.NAME_ASCENDING) public class LogInTest { private final String TAG = this.getClass().getSimpleName();

   @Rule
   public ActivityTestRule<LoginActivity> mActivityTestRule = new ActivityTestRule<>(LoginActivity.class);
   
   @Before
   public void setUp()
   {
       onWebView().forceJavascriptEnabled();
   }
   
   @Test
   public void testLogIn()throws Exception
   {
       IdlingPolicies.setMasterPolicyTimeout(
               1000 * 30, TimeUnit.MILLISECONDS);
       IdlingPolicies.setIdlingResourceTimeout(
               1000 * 30, TimeUnit.MILLISECONDS);
   
       try {
           onWebView().
                   withElement(findElement(Locator.NAME, "Select"))
                   .perform(webClick())
                   .reset();
       }catch (Exception e){
           Log.d(TAG, e.getMessage());
       }
   
       onWebView().
               withElement(findElement(Locator.ID, "username"))
               .perform(clearElement())
               .perform(DriverAtoms.webKeys("XXXXX"))
               .withElement(findElement(Locator.ID, "password"))
               .perform(clearElement())
               .perform(DriverAtoms.webKeys("yyyyyy"))
               .withElement(findElement(Locator.NAME, "Sign On"))
               .perform(webClick())
               .reset();
   
       ViewVisibilityIdlingResource idlingResource = new ViewVisibilityIdlingResource(AvisDetailActivity.class.getSimpleName());
       Espresso.registerIdlingResources(idlingResource);
   
   }
   
   

The test works well because the Login works but I have 2 problem :

1. How could I wait the new activity? ( seems the IdlingResource doesn't work )
2. How could I check for example if the splash screen is opened?

Here the code of idlingResource :

public class ViewVisibilityIdlingResource  implements IdlingResource {


private ResourceCallback mResourceCallback;
private String mActivitySimpleName;


public ViewVisibilityIdlingResource(String activitySimpleName) {
    this.mActivitySimpleName = activitySimpleName;
}

@Override
public final String getName() {
    return ViewVisibilityIdlingResource.class.getSimpleName();
}

@Override
public boolean isIdleNow() {
    Activity activity = getCurrentActivity();
    if (activity == null || activity.getClass().getSimpleName() != mActivitySimpleName){
        return false;
    }else{
        mResourceCallback.onTransitionToIdle();
        return true;
    }
}

private Activity getCurrentActivity() {
    final Activity[] activity = new Activity[1];
    java.util.Collection<Activity> activities = ActivityLifecycleMonitorRegistry.getInstance().getActivitiesInStage(Stage.RESUMED);
    activity[0] = Iterables.getOnlyElement(activities);
    return activity[0];
}


@Override
public void registerIdleTransitionCallback(ResourceCallback resourceCallback) {
    mResourceCallback = resourceCallback;
}

Thank for anyone can help me..!