How to remove space at the top of navbar

Hi everyone.
I'm developing an ionic 2 typescript APP, only for iOS devices.
I want to hide StatusBar and I can do that installing cordova-plugin-statusbar and, after platform ready...

if ( StatusBar ) StatusBar.hide( );

It works but my navbar height is incorrect.

navbar_top_space.png1024x768 30 KB

How can I remove space at the top of my navbar, after hide StatusBar?
Ionic v1 solves this with:

ionic.Platform.fullScreen( );

but I don't know how to do that on ionic v2

Thanks in advance.