When the tileview control is at (0,0) or the end coordinates, it continues to pull towards (-1,0), in fact (-1,0) does not exist. If the position where the finger stopped last happens to be on a button, this The button will trigger a click event, and triggering will cause a lot of confusion
esp32
Don’t trigger button click event
Please fill the “Code to reproduce” section.
When I swipe, the tileview is not moving because it has reached the end, but the finger can easily stop on the button and trigger an event. I request that the button not be triggered, thank you.
void event_cb_test(lv_obj_t *obj, lv_event_t event)
{
if (event == LV_EVENT_CLICKED)
{
printf("btn is clicked\n");
}
}
void create()
{
static lv_point_t valid_pos[] = {{0, 0}, {1, 0}};
lv_obj_t *tileview = lv_tileview_create(lv_scr_act(), NULL);
lv_tileview_set_valid_positions(tileview, valid_pos, 2);
lv_obj_t *obj1 = lv_obj_create(tileview, NULL);
lv_obj_set_size(obj1, lv_obj_get_width(tileview), lv_obj_get_height(tileview));
lv_obj_set_pos(obj1, 0, 0);
lv_tileview_add_element(tileview, obj1);
lv_obj_t *btn = lv_btn_create(tileview, NULL);
lv_obj_align(btn, obj1, LV_ALIGN_CENTER, 0, 0);
lv_obj_set_event_cb(btn, event_cb_test);
lv_tileview_add_element(tileview, btn);
lv_obj_t *obj2 = lv_obj_create(tileview, NULL);
lv_obj_set_size(obj2, lv_obj_get_width(tileview), lv_obj_get_height(tileview));
lv_obj_set_pos(obj2, lv_obj_get_width(tileview), 0);
lv_tileview_add_element(tileview, obj2);
lv_obj_t *btn2 = lv_btn_create(tileview, NULL);
lv_obj_align(btn2, obj2, LV_ALIGN_CENTER, 0, 0);
lv_obj_set_event_cb(btn2, event_cb_test);
lv_tileview_add_element(tileview, btn2);
}
Try this:
lv_obj_set_protect(obj1, LV_PROTECT_PRESS_LOST);
Thank you,this is so cool,Now it works great
Glad to hear that! 
Wait, there is another case, when there are many elements on obj1, the area exposed by obj1 is very small, and the situation of false triggering will still occur, that is, the start and end of the finger are on the element
Similarly, if there is only one element on obj1, but the element is large and almost covers obj1, then the start and end points of the finger are on the same element, then the event of this element will also be triggered. I propose to provide an api, When this api is set, it will no longer trigger its event when the hand moves over a distance on the element
Wait, there is another case, when there are many elements on obj1, the area exposed by obj1 is very small, and the situation of false triggering will still occur, that is, the start and end of the finger are on the element
It shouldn’t be possible. Once the tile view is dragged, it shouldn’t search for a new object while you drag it. So you can’t “activate” a new object while you drag the tileview.
This problem can only occur at the starting point (0,0) or the end of the coordinate, because the tileview does not move only at the vertex. The problem is that the finger does not touch the tileview itself at all. I give an example. On the vertex (0,0), there is a huge btn, the size is the same as (0,0), so I want to slide to (-1,0) with my finger, (-1,0) does not exist, so Tileview is motionless, so when I take my finger off the screen, I leave on btn, so I will trigger the btn event, and since I have never encountered the tileview, lv_obj_protect has no way to take effect.
I see. This behavior has already changed in dev-7.0. There the drag will be set regardless the object has moved or not. You can
dev-7.0
lv_core/lv_indev.c in master and dev-7.0 to see the changes and apply them manually. The gist should be in indev_drag() where proc->types.pointer.drag_in_prog = 1; is set.thank you!!!3000 times
You are welcome!
My English so pool,I can’t understand what’s your mean.