How to disable a scrollView?
scrollView.setEnable(false);

 scrollView.setOnTouchListener(null);

 scrollView.requestDisallowInterceptTouchEvent(true);

<ScrollView
    android:id="@+id/mainPage_scroll"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentBottom="true"
    android:layout_alignParentLeft="true"
    android:layout_alignParentRight="true"
    android:focusableInTouchMode="true"
    android:layout_below="@+id/tabBar" >

</ScrollView>

//removed an invalid option/answer

scrollView.setVisibility(Visibility.GONE);

class LockableScrollView extends ScrollView {

    ...

    // true if we can scroll (not locked)
    // false if we cannot scroll (locked)
    private boolean mScrollable = true;

    public void setIsScrollable(boolean scrollable) {
        mScrollable = scrollable;
    }
    public boolean getIsScrollable()
        return mScrollable;
    }

    @Override
    public boolean onTouchEvent(MotionEvent ev) {
        switch (ev.getAction()) {
            case MotionEvent.ACTION_DOWN:
                // if we can scroll pass the event to the superclass
                if (mScrollable) return super.onTouchEvent(ev);
                // only continue to handle the touch event if scrolling enabled
                return mScrollable; // mScrollable is always false at this point
            default:
                return super.onTouchEvent(ev);
        }
    }
}

<com.mypackagename.LockableScrollView
    android:id="@+id/QuranGalleryScrollView"
    android:layout_height="fill_parent"
    android:layout_width="fill_parent">

    <Gallery android:id="@+id/Gallery"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:scrollbars="horizontal">
    </Gallery>

</com.mypackagename.LockableScrollView>

((LockableScrollView)findViewById(R.id.QuranGalleryScrollView)).setIsScrollable(false);