View inside ScrollView doesn't take all place
Try adding android:fillViewport="true"to your ScrollView
remember that
android:layout_height=”fill_parent”means “set the height to the height of the parent.” This is obviously not what you want when using aScrollView. After all, theScrollViewwould become useless if its content was always as tall as itself. To work around this, you need to use the ScrollView attribute calledandroid:fillViewport. When set to true, this attribute causes the scroll view’s child to expand to the height of theScrollViewif needed. When the child is taller than theScrollView, the attribute has no effect.
http://www.curious-creature.org/2010/08/15/scrollviews-handy-trick/
Just add android:fillViewport="true" in yout xml layout in Scrollview
<ScrollView android:layout_height="match_parent" android:layout_width="match_parent" android:background="@color/green" xmlns:android="http://schemas.android.com/apk/res/android" android:fitsSystemWindows="true" android:fillViewport="true" ><!--define views here--></ScrollView>