i have implemented main menu listview  under content  with listview.the  problem is when i click emulator back button it will came main menu. i need to implement back to(navifram) content list view. 

where can i implement that code

code:-

samples_cb(void *data, Evas_Object *obj, void *event_info)
{
    Evas_Object *vbox, *label;
        Evas_Object *nf = data;
            vbox = elm_box_add(nf);
            elm_object_content_set(nf, vbox);

            /* Icon*/
            Evas_Object *ic = elm_icon_add(vbox);
            elm_image_file_set(ic, “/opt/usr/apps/org.tizen.sample/res/images”, NULL);
            elm_box_pack_end(vbox, ic);
            evas_object_show(ic);

            /* Label*/
            label = elm_label_add(vbox);
            elm_object_text_set(label, “<align=left> <b> content</b>”);
            evas_object_size_hint_weight_set(label, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
            elm_box_pack_end(vbox,label);
            evas_object_show(label);
           evas_object_show(vbox);

}

void
sample_cb(void *data, Evas_Object *obj, void *event_info)
{
    Evas_Object *list;
    Evas_Object *nf = data;

    /* List */
    list = elm_list_add(nf);
    elm_list_mode_set(list, ELM_LIST_COMPRESS);   

elm_list_item_append(list, “Image “, NULL, NULL,samples_cb, nf);   

elm_naviframe_item_push(nf, “Temple”, NULL, NULL, list, NULL);

          elm_list_go(list);
}