使用lvgl获取wifi并输入密码连接的代码

### 回答1：
以下是使用lvgl获取WiFi并输入密码连接的代码：

#include "lvgl.h"
#include "esp_wifi.h"
#include "esp_event.h"
#include "esp_log.h"
#include "esp_system.h"
#include "esp_netif.h"
#include "nvs_flash.h"
#include "protocol_examples_common.h"

static const char *TAG = "wifi";

static lv_obj_t *keyboard;
static lv_obj_t *keyboard_ta;
static lv_obj_t *wifi_list_ta;
static lv_obj_t *ssid_ta;
static lv_obj_t *password_ta;

static esp_netif_t *wifi_netif = NULL;

static void keyboard_event_cb(lv_obj_t *event_obj, lv_event_t event)
{
    if (event == LV_EVENT_VALUE_CHANGED) {
        char buf[64];
        lv_ta_get_text(event_obj, buf, sizeof(buf));
        lv_ta_set_text(keyboard_ta, buf);
    }
}

static void update_wifi_list(void)
{
    wifi_ap_record_t ap_info;
    lv_ta_set_text(wifi_list_ta, "");
    lv_ta_set_cursor_type(wifi_list_ta, LV_CURSOR_NONE);
    lv_ta_set_one_line(wifi_list_ta, true);
    lv_ta_set_style(wifi_list_ta, LV_TA_STYLE_BG, lv_style_plain_color);
    lv_ta_set_style(wifi_list_ta, LV_TA_STYLE_SB, lv_style_plain_color);
    lv_ta_set_style(wifi_list_ta, LV_TA_STYLE_CURSOR, lv_style_plain_color);
    lv_ta_set_style(wifi_list_ta, LV_TA_STYLE_BORDER, lv_style_plain_color);

    wifi_scan_config_t scan_config = {
        .scan_type = WIFI_SCAN_TYPE_PASSIVE,
    };
    esp_wifi_scan_start(&scan_config, true);
    uint16_t ap_count = 0;
    esp_wifi_scan_get_ap_num(&ap_count);
    if (ap_count == 0) {
        lv_ta_set_text(wifi_list_ta, "No Wi-Fi networks found");
        return;
    }
    wifi_ap_record_t *ap_list = malloc(sizeof(wifi_ap_record_t) * ap_count);
    esp_wifi_scan_get_ap_records(&ap_count, ap_list);
    char buf[256];
    for (int i = 0; i < ap_count; i++) {
        ap_info = ap_list[i];
        snprintf(buf, sizeof(buf), "%s\n", (char *)ap_info.ssid);
        lv_ta_add_text(wifi_list_ta, buf);
    }
    free(ap_list);
}

static void wifi_connect(void)
{
    wifi_config_t wifi_config = {0};
    char ssid[64];
    char password[64];
    lv_ta_get_text(ssid_ta, ssid, sizeof(ssid));
    lv_ta_get_text(password_ta, password, sizeof(password));
    memcpy(wifi_config.sta.ssid, ssid, strlen(ssid));
    memcpy(wifi_config.sta.password, password, strlen(password));

    esp_wifi_disconnect();
    esp_wifi_set_mode(WIFI_MODE_STA);
    esp_wifi_set_config(ESP_IF_WIFI_STA, &wifi_config);
    esp_wifi_connect();
}

static esp_err_t wifi_event_handler(void *ctx, system_event_t *event)
{
    switch (event->event_id) {
        case SYSTEM_EVENT_STA_START:
            esp_wifi_connect();
            break;

        case SYSTEM_EVENT_STA_GOT_IP:
            ESP_LOGI(TAG, "Got IP: %s", ip4addr_ntoa(&event->event_info.got_ip.ip_info.ip));
            break;

        case SYSTEM_EVENT_STA_DISCONNECTED:
            ESP_LOGE(TAG, "Wi-Fi disconnected");
            esp_wifi_connect();
            break;

        default:
            break;
    }
    return ESP_OK;
}

void  

### 回答2：
使用LVGL获取Wi-Fi并输入密码连接的代码如下：

#include "lvgl/lvgl.h"
#include <stdio.h>

// Wi-Fi相关的函数
// ...

// Wi-Fi连接状态的回调函数
static void wifi_connect_cb(bool connected) {
if (connected) {
printf("Wi-Fi connected!\n");
// 连接成功后的操作
// ...
} else {
printf("Wi-Fi connection failed!\n");
// 连接失败后的操作
// ...
}
}

// 连接Wi-Fi的界面
static void wifi_connect_screen(lv_obj_t *parent) {
// 创建Wi-Fi名称输入框
lv_obj_t *wifi_label = lv_label_create(parent);
lv_label_set_text(wifi_label, "Wi-Fi Name:");
lv_obj_align(wifi_label, NULL, LV_ALIGN_CENTER, 0, -30);

lv_obj_t *wifi_textbox = lv_textbox_create(parent);
lv_textbox_set_one_line(wifi_textbox, true);
lv_textbox_set_cursor_hidden(wifi_textbox, false);
lv_textbox_set_pwd_mode(wifi_textbox, false);
lv_obj_align(wifi_textbox, NULL, LV_ALIGN_CENTER, 0, 0);

// 创建密码输入框
lv_obj_t *password_label = lv_label_create(parent);
lv_label_set_text(password_label, "Password:");
lv_obj_align(password_label, NULL, LV_ALIGN_CENTER, 0, 30);

lv_obj_t *password_textbox = lv_textbox_create(parent);
lv_textbox_set_one_line(password_textbox, true);
lv_textbox_set_cursor_hidden(password_textbox, true);
lv_textbox_set_pwd_mode(password_textbox, true);
lv_obj_align(password_textbox, NULL, LV_ALIGN_CENTER, 0, 60);

// 创建连接按钮
lv_obj_t *connect_button = lv_btn_create(parent);
lv_obj_t *connect_button_label = lv_label_create(connect_button);
lv_label_set_text(connect_button_label, "Connect");
lv_obj_set_event_cb(connect_button, wifi_connect_event_cb);
lv_obj_align(connect_button, NULL, LV_ALIGN_CENTER, 0, 120);

// ...
}

// Wi-Fi连接事件的回调函数
static void wifi_connect_event_cb(lv_obj_t *obj, lv_event_t event) {
if (event == LV_EVENT_PRESSED) {
// 获取Wi-Fi名称和密码
lv_obj_t *wifi_textbox = lv_obj_get_child(parent, NULL);
lv_obj_t *password_textbox = lv_obj_get_child(parent, wifi_textbox);
const char *wifi_name = lv_textbox_get_text(wifi_textbox);
const char *password = lv_textbox_get_text(password_textbox);

// 连接Wi-Fi
//wifi_connect(wifi_name, password, wifi_connect_cb);
}
}

int main(void) {
// 初始化LVGL
lv_init();

// 创建顶层容器
lv_obj_t *screen = lv_scr_act();

// 创建连接Wi-Fi界面
wifi_connect_screen(screen);

while(1) {
// 更新LVGL
lv_task_handler();
}

return 0;
}

以上的代码使用LVGL库创建了一个连接Wi-Fi的界面，并通过回调函数进行Wi-Fi连接。在界面中，用户可以输入Wi-Fi名称和密码，点击"Connect"按钮后，将获取到的Wi-Fi名称和密码传递给连接函数进行Wi-Fi连接操作。连接结果将通过回调函数返回给用户。

需要注意的是，以上代码中的Wi-Fi相关函数和实现细节并未提供，因此需要根据具体的开发环境和Wi-Fi模块进行相应的修改和补充。  

### 回答3：
使用LVGL获取WiFi并输入密码连接的代码可以参考以下示例：

#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include "lvgl/lvgl.h"
#include "lv_examples/lv_examples.h"
#include "esp_wifi.h"

lv_obj_t *pw_label;
lv_obj_t *kb;

void wifi_connect(const char *ssid, const char *password) {
wifi_config_t wifi_config = {
.sta = {
.ssid = "",
.password = ""
},
};

strncpy((char *)wifi_config.sta.ssid, ssid, sizeof(wifi_config.sta.ssid));
strncpy((char *)wifi_config.sta.password, password, sizeof(wifi_config.sta.password));

esp_wifi_set_mode(WIFI_MODE_STA);
esp_wifi_set_config(ESP_IF_WIFI_STA, &wifi_config);
esp_wifi_start();
esp_wifi_connect();
}

static void event_handler(lv_obj_t *keyboard, lv_event_t event)
{
if(event == LV_EVENT_CANCEL) {
lv_kb_set_ta(kb, NULL);
lv_obj_del_async(kb);
}
else if(event == LV_EVENT_APPLY) {
const char *password = lv_textarea_get_text(pw_label);
wifi_connect("MyWiFi", password); // 替换为实际WiFi名称
lv_kb_set_ta(kb, NULL);
lv_obj_del_async(kb);
}
}

void create_password_keyboard(lv_obj_t *parent)
{
kb = lv_keyboard_create(parent, NULL);
lv_obj_set_size(kb, lv_disp_get_hor_res(NULL), lv_disp_get_ver_res(NULL) / 2);
lv_keyboard_set_map(kb, LV_KEYBOARD_MODE_TEXT);
lv_obj_set_event_cb(kb, event_handler);

lv_obj_set_user_data(kb, pw_label);
}

void password_textarea_event_cb(lv_obj_t *textarea, lv_event_t event)
{
if(event == LV_EVENT_CLICKED) {
create_password_keyboard(lv_scr_act());
}
}

void create_password_screen()
{
lv_obj_t *scr = lv_disp_get_scr_act(NULL);

pw_label = lv_textarea_create(scr, NULL);
lv_obj_set_width(pw_label, lv_disp_get_hor_res(NULL) - 50);
lv_obj_align(pw_label, NULL, LV_ALIGN_CENTER, 0, 0);
lv_textarea_set_pwd_mode(pw_label, true);
lv_obj_set_event_cb(pw_label, password_textarea_event_cb);
lv_textarea_set_text(pw_label, "");
lv_textarea_set_one_line(pw_label, true);
lv_textarea_set_cursor_hidden(pw_label, true);

lv_scr_load(scr);
}

int main()
{
lv_init();

lv_disp_drv_t *disp_drv = lv_disp_drv_alloc();
lv_disp_drv_init(disp_drv);
disp_drv->flush_cb = your_display_flush_function;
...
lv_disp_t *disp = lv_disp_drv_register(&disp_drv);

create_password_screen();

while(1) {
lv_task_handler();
delay_ms(5); // 替换为合适的延时函数
}

return 0;
}

上述代码是一个汇总示例，展示了使用LVGL创建一个WiFi密码输入场景的简单方法。具体使用方式可能根据你的项目需求和硬件平台的不同而有所调整，请根据实际情况进行适当的修改。