מדידת מעורבות המשתמשים

private CustomTabsCallback mCustomTabsCallback = new CustomTabsCallback() {
    @Override
    public void onNavigationEvent(int navigationEvent, @Nullable Bundle extras) {
        String event;
        switch (navigationEvent) {
            case CustomTabsCallback.NAVIGATION_ABORTED:
                event = "NAVIGATION_ABORTED";
                break;
            case CustomTabsCallback.NAVIGATION_FAILED:
                event = "NAVIGATION_FAILED";
                break;
            case CustomTabsCallback.NAVIGATION_FINISHED:
                event = "NAVIGATION_FINISHED";
                break;
            case CustomTabsCallback.NAVIGATION_STARTED:
                event = "NAVIGATION_STARTED";
                break;
            case CustomTabsCallback.TAB_SHOWN:
                event = "TAB_SHOWN";
                break;
            case CustomTabsCallback.TAB_HIDDEN:
                event = "TAB_HIDDEN";
                break;
            default:
                event = String.valueOf(navigationEvent);
        }
        Log.d(TAG, "onNavigationEvent (navigationEvent=" + event + ')');
        mTextNavigation.setText("onNavigationEvent " + event);
    }
};

private EngagementSignalsCallback mEngagementSignalsCallback = new EngagementSignalsCallback() {
    @Override
    public void onVerticalScrollEvent(boolean isDirectionUp, @NonNull Bundle extras) {
        Log.d(TAG, "onVerticalScrollEvent (isDirectionUp=" + isDirectionUp + ')');
        mTextVerticalScroll.setText("vertical scroll " + (isDirectionUp ? "UP️" : "DOWN"));
    }

    @Override
    public void onGreatestScrollPercentageIncreased(int scrollPercentage, @NonNull Bundle extras) {
        Log.d(TAG, "scroll percentage: " + scrollPercentage + "%");
        mTextGreatestPercentage.setText("scroll percentage: " + scrollPercentage + "%");
    }

    @Override
    public void onSessionEnded(boolean didUserInteract, @NonNull Bundle extras) {
        Log.d(TAG, "onSessionEnded (didUserInteract=" + didUserInteract + ')');
        mTextSessionEnd.setText(didUserInteract ? "session ended with user interaction" : "session ended without user interaction");
    }
};

private CustomTabsClient mCustomTabsClient;
private CustomTabsSession mCustomTabsSession;

private final CustomTabsServiceConnection mServiceConnectionCallback = new CustomTabsServiceConnection() {

    @Override
    public void onCustomTabsServiceConnected(@NonNull ComponentName name, @NonNull CustomTabsClient client) {
        mCustomTabsClient = client;
        mCustomTabsSession = mCustomTabsClient.newSession(mCustomTabsCallback);
        try {
            boolean engagementSignalsApiAvailable = mCustomTabsSession.isEngagementSignalsApiAvailable(Bundle.EMPTY);
            if (!engagementSignalsApiAvailable) {
                Log.d(TAG, "CustomTab Engagement signals not available, make sure to use the " +
                        "latest Chrome version and enable via chrome://flags/#cct-real-time-engagement-signals");
                return;
            }
            mCustomTabsSession.setEngagementSignalsCallback(mEngagementSignalsCallback, Bundle.EMPTY);
        } catch (RemoteException e) {
            Log.w(TAG, "The Service died while responding to the request.", e);
        } catch (UnsupportedOperationException e) {
            Log.w(TAG, "Engagement Signals API isn't supported by the browser.", e);
        }
    }

    @Override
    public void onServiceDisconnected(ComponentName name) {
        mCustomTabsClient = null;
        mConnection = null;
        mCustomTabsSession = null;
    }
};

@Override
protected void onStart() {
    super.onStart();
    bindCustomTabsService();
}

private void bindCustomTabsService() {
    String packageName = CustomTabsHelper.getPackageNameToUse(this);
    if (packageName == null) return;
    CustomTabsClient.bindCustomTabsService(this, packageName, mConnection);
}