littlevgl之tileview在horizontal layout下实现level-wise rolling animation effect

    lv_obj_t *tileview;
    
    static void event_handler(lv_obj_t * obj, lv_event_t event)
    {
    int cnt=0,cnt1=0;
    if(event == LV_EVENT_VALUE_CHANGED) {
        //        printf("State: %s\n", lv_sw_get_state(obj) ? "On" : "Off");
        printf("++++++\n");
    
    
        cnt++;
        cnt1++;
        lv_tileview_ext_t* ext = lv_obj_get_ext_attr(obj);
    
        printf("ext->act_id.x=%d\n",ext->act_id.x);
        if (ext->act_id.x == 0) {
            cnt1++;
      //