Syncronized scroll views

layout_activity.xml

<!--Im skipping here the mandatory xmlns atr to send this quick-->
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">

    <!--Table Head Container-->
    <HorizontalScrollView
        android:id="@+id/rightHeader"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:scrollbars="none">
        <!--Right Col Labels-->
        <LinearLayout
            android:id="@+id/labelsContainer"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:orientation="horizontal">
        </LinearLayout>
    </HorizontalScrollView>

    <!--Body-->
    <ScrollView
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <!--General two cols container-->
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <!--Human Resource Column-->
            <LinearLayout
                android:id="@+id/workforceList"
                android:tag="leftWorkforceCol"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:orientation="vertical">
            </LinearLayout>

            <!--Cards Column-->
            <HorizontalScrollView
                android:id="@+id/rightBody"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content">
                <LinearLayout
                    android:id="@+id/workforceCards"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:orientation="vertical">
                </LinearLayout>
            </HorizontalScrollView>

        </LinearLayout>

    </ScrollView>

</LinearLayout>

SyncScrollsActivity.java

//We will simply pass two ScrollViews to our method.
//This is not perfect cause you have to syncScrolls(first, second), and then syncScrolls(second, first)
//Please look at the xml below, the views to pass should be rightHeader, rightBody and viceversa

private void syncScrolls(final HorizontalScrollView currentView, final HorizontalScrollView otherView) {

    GestureDetector.SimpleOnGestureListener gestureListener = new GestureDetector.SimpleOnGestureListener() {
        @Override
        public boolean onDoubleTap(MotionEvent e) {
            return true;
        }
        @Override
        public boolean onDoubleTapEvent(MotionEvent e) {
            return true;
        }
        @Override
        public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
          //Onfling is very important to be considered, cause is the fast scroll, like when flip a marble with the finger
          //Here we are ignoring it
            return true;
        }
        @Override
        public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {
          //Sorry again but this is not 100% perfect if the user is really annoying, like intentionally trying to fuck
          //thinks up, the user could desync both views. Is a very rare case, and happens if the user
          //move the finger back and forward (in the scroll direction) quickly in a 10mm range, is very, very uncommon
          //the problem is, that gesture is not catch by Android!... go figure
            otherView.scrollTo(currentView.getScrollX(), 0);
            return super.onScroll(e1, e2, distanceX, distanceY);
        }
        @Override
        public boolean onDown(MotionEvent e) {
            return true;
        }
    };
    
    //Here "this" is the context, use getApplicactionContext or getContext if needed
    final GestureDetector gestureDetector = new GestureDetector(this, gestureListener);

    currentView.setOnTouchListener(new View.OnTouchListener() {
        public boolean onTouch(View v, MotionEvent event) {
            return gestureDetector.onTouchEvent(event);
        }
    });

}