GuiGuider1.6.1按钮问题

[RayC02]

我的按钮点击事件是修改容器的可见性为显示，但是他的优先级应该是大于按钮动画，如何改为先显示按钮被点击的动画再去执行事件修改容器可见性。

[WenbinYuan]

Hi @RayC02 ,

Please try to use Released as the event Trigger of Button which control the Container, hope this way could help you.

Best Regards,

Wenbin

[RayC02]

I tried. It didn't work. It's a matter of priorities

[WenbinYuan]

Hi @RayC02,

as your discription, this action is limited by LVGL Event  mechanism, the event callback will be operated immediately once the trigger is sent.

You could try to write a costom event callback for this Button, such as using animation to do the operation after some delay.

Best Regards,

Wenbin

[RayC02]

Thanks for the Pointers, but I would like to know how to write using animation to perform operations after a delay of some time? I can't find a function for the button to trigger the animation

[WenbinYuan]

Hi @RayC02,

For example, you could write animation declaration in Event custom code area:

with the code like:

lv_anim_t change_op;
lv_anim_init(&change_op);
lv_anim_set_exec_cb(&change_op, anim_opa_cb);
lv_anim_set_values(&change_op, lv_obj_get_style_bg_opa(guider_ui.screen_1_cont_1, 0), 0);
lv_anim_set_time(&change_op, 100);
lv_anim_set_delay(&change_op, 200);
lv_anim_set_var(&change_op, guider_ui.screen_1_cont_1);
lv_anim_start(&change_op);

and then decalare the anim-opa-cb in custom.c/h

void anim_opa_cb(void * var, int32_t v)
{
    lv_obj_set_style_bg_opa(var, v, LV_PART_MAIN);
}

Hope this could help you.

Best Regards,

Wenbin

[RayC02]

Thank you for your answer. It's a good plan. However, my container uses flag to select visibility, you see this comment section of the code is the function I need to implement, clear its hidden attribute. I tried your code, but it still didn't meet my requirements. Is there any other way?

By the way，I've also tried replacing this code （lv_obj_get_style_bg_opa(guider_ui.screen_function_1, 0)）with the following lv_obj_clear_flag code, but it doesn't work. 

[WenbinYuan]

Hi @RayC02,

Please try to modify the callback function to:

void anim_opa_cb(void * var, int32_t v)
{
    if (v == 0) {
        lv_obj_clear_flag(var, LV_OBJ_FLAG_HIDDEN);
    }
}

 and also change the animation code:

lv_anim_set_values(&change_op, 1, 0);

Best Regards,

Wenbin

[RayC02]

Thank you very much for your answer, which successfully solved my problem.Do you have any QQ groups or other contact information in China? If you have any questions, I can contact you more conveniently