ScrollView outside the ViewPager does not appear correcly

Question

Whenever I tried put the default/custom scrollView outside the viewPager the viewPager does not loading at all. I try to set the android:fillViewport="true" parameter but that does not help at all. Also I use that class https://stackoverflow.com/a/31440577/4776020 and it works, but not 100% correctly. The view on each page in ViewPager is adjusting into the longest one.

         <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_weight="9"
            android:orientation="vertical"
           >

            <ProgressBar
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center"
                android:id="@+id/loadScreenContent" />
<CustomScrollView
    android:layout_width="match_parent"
    android:layout_height="wrap_content">
            <CustomViewPager
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:id="@+id/screenViewPager" />
                </CustomScrollView>
</LinearLayout>

CustomScrollView

public class CustomScrollView extends ScrollView{

    private GestureDetector mGestureDetector;

    public CustomScrollView(Context context, AttributeSet attrs) {
        super(context, attrs);
        mGestureDetector = new GestureDetector(context, new YScrollDetector());
        setFadingEdgeLength(0);
    }

    @Override
    public boolean onInterceptTouchEvent(MotionEvent ev) {
        return super.onInterceptTouchEvent(ev) && mGestureDetector.onTouchEvent(ev);
    }

    // Return false if we're scrolling in the x direction
    class YScrollDetector extends GestureDetector.SimpleOnGestureListener {
        @Override
        public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {
            return Math.abs(distanceY) > Math.abs(distanceX);
        }
    }
}