Height notification bar apply in MaterialNavigationDrawer

I am using the http://ift.tt/1ERNdmG library to the effect of the scroll along the lines of the design material, but in my project I windows notification bar is false and that happens when I'm using the library Android-ObservableScrollView is calculating the wrong time. I'm following this example:

-- thanks to those who help

.java

http://ift.tt/1wKPkqv

.xml

http://ift.tt/1wKPkqx

Result