Tabs are not visible on next or preview action about android-material-stepper HOT 4 CLOSED

public void setCurrentStep(int newStepPosition) {
        int size = mStepTitles.size();
        for (int i = 0; i < size; i++) {
            StepTab childTab = (StepTab) mTabsInnerContainer.getChildAt(i);
            boolean done = i < newStepPosition;
            final boolean current = i == newStepPosition;
            childTab.updateState(done, current);

            HorizontalScrollView hv = (HorizontalScrollView) mTabsInnerContainer.getParent();
            if(current) {
                hv.smoothScrollTo(childTab.getLeft() - 20, 0);
            }
        }
    }