littlevgl遍历控件

void update_list(const lv_obj_t* list)
{
  int i = 0;
  lv_obj_t* child = lv_obj_get_child_back(lv_page_get_scrl(list), NULL);//获取可滚动部分
  while (child) {
    lv_obj_t* subchild;
    subchild = lv_obj_get_child(child, NULL);//获取最后一个控件
    if(subchild)
    {
      lv_label_set_text(subchild, "");
      lv_obj_align(child, child, LV_ALIGN_IN_TOP_RIGHT, -4, 10);
    }
    
    child = lv_obj_get_child_back(lv_page_get_scrl(list), child);
  }
}