How to use evas_object_data_get() API while using UI-Builder?????

 I have to control back button function( name: nf_hw_back_cb  in appmain.c )  in different view. 

so I have to get current data`s view(uib_view_context)  from evas_object_data_get() API like 

uib_view_context* temp = evas_object_data_get(?,?);

but i don`t know how to use that api , which code to put in if we want to get current view`s view_context

below code is the function of the back button that is made tizen

void
nf_hw_back_cb(void* param, Evas_Object * evas_obj, void* event_info) {

    evas_obj = uib_views_get_instance()->get_window_obj()->app_naviframe;
    elm_naviframe_item_pop(evas_obj);
    //TODO : user define code

}