android - How do I modify/get rid of this bar at the top of my listview? -

just title says i'm trying rid of bar , find no reference anywhere in xml or code. looking around on website , not find suggestion worked. mean blue area says listview on it. thanks!

https://i.stack.imgur.com/ywuwg.jpg

you can take away in activity this

 oncreate(bundle savedinstancestate){  super.oncreate(savedinstancestate);   // use before create view  actionbar actionbar = getsupportedactionbar();  if(actionbar != null){      actionbar.hide();  }   setcontentview(r.layout.some_layout);  ...  }