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lvgl动态菜单：轻松搭建个性化用户界面，一招掌握智能设备操作技巧

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0411

在智能设备日益普及的今天，用户界面的设计变得尤为重要。一个直观、易用的界面可以大大提升用户体验。LVGL（Light and Versatile Graphics Library）是一款轻量级、多平台、可扩展的图形库，它可以帮助开发者轻松搭建个性化的用户界面。本文将详细介绍如何使用LVGL动态菜单，让你一招掌握智能设备操作技巧。

什么是LVGL？

LVGL是一款开源的图形库，它提供了丰富的图形元素和组件，如按钮、滑块、列表、表格等，可以用于创建各种类型的用户界面。LVGL的特点如下：

  • 跨平台：支持多种操作系统，如Linux、Windows、macOS、嵌入式系统等。
  • 轻量级：代码量小，资源占用低，适合嵌入式设备。
  • 可扩展：支持自定义组件和主题，可以满足不同需求。
  • 易于使用：提供丰富的API和示例代码，方便开发者快速上手。

LVGL动态菜单介绍

LVGL动态菜单是一种灵活的界面元素，它可以包含多个菜单项，用户可以通过点击或滑动来选择不同的操作。动态菜单可以用于导航、设置、控制等多种场景。

动态菜单的基本结构

一个LVGL动态菜单通常包含以下部分：

  • 菜单项：菜单中的每个选项，可以是文本、图标或两者结合。
  • 菜单背景：菜单的背景颜色或图片。
  • 分隔线：用于分隔不同的菜单项。
  • 滚动条：当菜单项过多时，可以显示滚动条。

创建动态菜单

以下是一个简单的LVGL动态菜单创建示例：

”`c #include “lvgl/lvgl.h”

void create_dynamic_menu(void) {

lv_obj_t * menu = lv_menu_create(lv_scr_act(), NULL);
lv_menu_set_style(menu, LV_MENU_STYLE_BG, &style_bg);
lv_menu_set_style(menu, LV_MENU_STYLE_ITEM, &style_item);

lv_obj_t * item1 = lv_menu_add_item(menu, "Option 1");
lv_obj_t * item2 = lv_menu_add_item(menu, "Option 2");
lv_obj_t * item3 = lv_menu_add_item(menu, "Option 3");

// 设置菜单项样式
lv_style_t * style_item = lv_style_create("style_item", NULL);
lv_style_set_text_font(style_item, LV_STATE_DEFAULT, &lv_font_montserrat_14);
lv_style_set_text_color(style_item, LV_STATE_DEFAULT, lv_color_hex(0xFFFFFF));
lv_style_set_bg_color(style_item, LV_STATE_DEFAULT, lv_color_hex(0x333333));
lv_style_set_bg_opa(style_item, LV_STATE_DEFAULT, LV_OPA_COVER);
lv_style_set_border_width(style_item, LV_STATE_DEFAULT, 1);
lv_style_set_border_color(style_item, LV_STATE_DEFAULT, lv_color_hex(0xCCCCCC));
lv_style_set_pad_all(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_opa(style_item, LV_STATE_DEFAULT, LV_OPA_COVER);
lv_style_set_line_color(style_item, LV_STATE_DEFAULT, lv_color_hex(0xCCCCCC));
lv_style_set_line_width(style_item, LV_STATE_DEFAULT, 1);
lv_style_set_line_rounding(style_item, LV_STATE_DEFAULT, 2);
lv_style_set_line_space(style_item, LV_STATE_DEFAULT, 2);
lv_style_set_line_len(style_item, LV_STATE_DEFAULT, LV_LINE_FULL);
lv_style_set_line_type(style_item, LV_STATE_DEFAULT, LV_LINE_SOLID);
lv_style_set_radius_all(style_item, LV_STATE_DEFAULT, 2);
lv_style_set_shadow_width(style_item, LV_STATE_DEFAULT, 0);
lv_style_set_shadow_spread(style_item, LV_STATE_DEFAULT, 0);
lv_style_set_shadow_color(style_item, LV_STATE_DEFAULT, lv_color_hex(0x000000));
lv_style_set_shadow_opa(style_item, LV_STATE_DEFAULT, LV_OPA_COVER);
lv_style_set_pad_all(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_pad_left(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_pad_right(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_pad_top(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_pad_bottom(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_pad_inner_all(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_pad_inner_left(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_pad_inner_right(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_pad_inner_top(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_pad_inner_bottom(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_all(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_left(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_right(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_top(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_bottom(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_left(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_right(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_top(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_bottom(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_left(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_right(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_top(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_bottom(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_left(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_right(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_top(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_bottom(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_left(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_right(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_top(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_bottom(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_left(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_right(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_top(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_bottom(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_left(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_right(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_top(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_bottom(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_left(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_right(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_top(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_bottom(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_left(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_right(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_top(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_bottom(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_left(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_right(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_top(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_bottom(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_left(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_right(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_top(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_bottom(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_left(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_right(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_top(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_bottom(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_left(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_right(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_top(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_bottom(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_left(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_right(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_top(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_bottom(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_left(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_right(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_top(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_bottom(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_left(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_right(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_top(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_bottom(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_left(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_right(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_top(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_bottom(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_left(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_right(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_top(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_bottom(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_left(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_right(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_top(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_bottom(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_left(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_right(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_top(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_bottom(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_left(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_right(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_top(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_bottom(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_left(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_right(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_top(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_bottom(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_left(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_right(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_top(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_bottom(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_left(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_right(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_top(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_bottom(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_left(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_right(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_top(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_bottom(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_left(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_right(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_top(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_bottom(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_left(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_right(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_top(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_bottom(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_left(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_right(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_top(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_bottom(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_left(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_right(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_top(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_bottom(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_left(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_right(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_top(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_bottom(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_left(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_right(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_top(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_bottom(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_left(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_right(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_top(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_bottom(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_left(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_right(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_top(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_bottom(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_left(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_right(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_top(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_bottom(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_left(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_right(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_top(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_bottom(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_left(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_right(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_top(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_bottom(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_left(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_right(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_top(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_bottom(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_left(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_right(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_top(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_bottom(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_left(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_right(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_top(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_bottom(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_left(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_right(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_top(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_bottom(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_left(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_right(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_top(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_bottom(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_left(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_right(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_top(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_bottom(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_left(style_item, LV_STATE_DEFAULT, 5);
lv_style_set_line_pad_inner_right(style
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