The standard ScrollView is only meant to be used as a parent. You need to change the ScrollView to a android.support.v4.widget.NestedScrollView.
An example can be seen in the reference documentation for AppBarLayout.
The standard ScrollView is only meant to be used as a parent. You need to change the ScrollView to a android.support.v4.widget.NestedScrollView.
An example can be seen in the reference documentation for AppBarLayout.