Attempt to invoke virtual method 'void com.mapbox.services.android.navigation.ui.v5.MultiOnClickListener.clearListeners()' on a null object reference]

Android API: 21
Mapbox Navigation SDK version: 0.39.0

Steps to trigger behavior

I'm trying to use the NavigationView on a embedded layout and trying to "move" the layout to another contentview, but it crash has soon I remove the View from the parent with:

Attempt to invoke virtual method 'void com.mapbox.services.android.navigation.ui.v5.MultiOnClickListener.clearListeners()' on a null object reference]

I have a simple class with:

public class clsNavigationView extends CoordinatorLayout implements OnNavigationReadyCallback, MapboxMap.OnMapLongClickListener,
        NavigationListener, ProgressChangeListener, InstructionListListener, SpeechAnnouncementListener,
        BannerInstructionsListener, OnTrackingModeChangedListener
...
        inflate(getContext(), R.layout.mapbox_activity_embedded_navigation, this);
...

The layout have

<com.mapbox.services.android.navigation.ui.v5.NavigationView
android:id="@+id/navigationView"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:navigationDarkTheme="@style/NavigationViewDark"
app:navigationLightTheme="@style/NavigationViewLight"/>

I put the clsNavigationView on a static FrameLayout, I add it to my mainView on another FrameLayout.

When I change view, I remove the view with:

((FrameLayout) objFrameMap.getParent()).removeView(objFrameMap);

Do my new setContentview on my main Activity.

Then I add back my Frame into my new FrameLayout on the new Content

((FrameLayout) findViewById(R.id.layer_mapview)).addView(objFrameMap);

Actual behavior

It crash at the removeView.

** I'm not using fragment.

Fix?

I tested with the source, I just add a check if multiOnClickListener before doing the clear on 3 classes (RecenterButton, FeedbackButton and SoundButton), it's seem to be fine after this change.

  private void clearListeners() {
    multiOnClickListener.clearListeners();
    multiOnClickListener = null;
    setOnClickListener(null);
  }

to

  private void clearListeners() {
    if (multiOnClickListener != null) multiOnClickListener.clearListeners();
    multiOnClickListener = null;
    setOnClickListener(null);
  }

Inspect the clearListeners methods in RecenterButton, FeedbackButton, and SoundButton, which the issue identifies as the crash sites. Reproduce the embedded NavigationView removal and reinsertion flow, then verify that removing the view no longer crashes when a listener is absent.