export const BASE_PATH_MAP = Symbol('path_map'); export const ROUTER_MAP = Symbol('route_map');
时间: 2023-06-12 18:04:45 浏览: 33
这是一个使用 ES6 Symbol 定义的常量,用于在代码中表示两个不同的映射关系。
`BASE_PATH_MAP` 是一个路由路径映射的 Symbol 常量,用于标记存储路径映射关系的对象。这个对象通常是一个 Map 或类似于对象字面量的数据结构,用于将 URL 路径映射到对应的处理程序或页面组件。
`ROUTER_MAP` 是一个路由器映射的 Symbol 常量,用于标记存储路由器映射关系的对象。这个对象通常是一个 Map 或类似于对象字面量的数据结构,用于将 URL 路由器映射到对应的处理程序或页面组件。两个常量的作用是不同的,但都是用于处理 URL 路由和映射的。
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帮我优化以下 const val LOAD_H5_SUCCESS="appLoadH5Success" //H5加载完成 const val APP_START_ACTIVITY="appStartActivity" const val GET_GAODE_LOCATION = "appGetGaoDeLocation" //获取定位 const val BARCODESCANNER_SCAN = "appBarcodescannerScan" //扫码 const val APP_GET_FILE_BASE64 = "appGetFileBase64" const val CAMERA_UPLOAD = "appCameraUpload" //调取拍照的功能 const val CREDENTIALS_CAMERA_UPLOAD = "appCredentialsCameraUpload" //调取证件拍照的功能 const val SCAN_BLUETOOTH = "appScanBluetooth" const val APP_DISCONNECT_BLE="appDisConnectBle" const val TH_PRINT = "appThPrint" const val GET_TH_WEIGHT = "appGetThWeight" const val GET_SJ_WEIGHT = "appGetSjWeight" const val PDA_PRINT = "appPdaPrint" const val GALLERY_UPLOAD = "appGalleryUpload" //上传文件 const val CREDENTIALS_GALLERY_UPLOAD = "appCredentialsGalleryUpload" //证件本地文件上传 const val FILE_UPLOAD = "appFileUpload" const val CLEAR_CACHE = "appClearCache" //清理缓存 const val GET_CACHE_SIZE = "appGetCacheSize" //获取缓存 const val DOWNLOAD_FILE = "appDownloadFile" const val PHONE_DEVICE = "appPhoneDevice" //H5获取手机设备信息 const val MEDIA_START_RECORD = "appMediaStartRecord" //开启录音 const val MEDIA_STOP_RECORD = "appMediaStopRecord" //结束录音 const val PDA_SCAN = "appPdaScan" const val APP_BLE_CONNECTED = "appBleConnected" const val APP_BLE_CONNECTED_BY_PARAMS = "appBleConnectedByParams" const val APP_USB_CONNECTED = "appUsbConnected" const val APP_CONNECT_USB = "appConnectUsb" const val APP_BACK_PAGE = "appBackPage" const val APP_LOGOUT="appLogout" //退出登录 const val APP_LOGOUT_MESSAGE="appLogoutMessage" //402 401 提示 const val APP_TOKEN_TIMEOUT="appTokenTimeOut" //token过期 const val APP_TO_BACKLOG="appToBacklog" //返回工作台 const val APP_REFRESH_BACKLOG="appRefreshBacklog" //刷新工作台 const val APP_REFRESH_BACKLOG_NUM="appRefreshBacklogNum" //刷新工作台数量 const val APP_CLOSE_MULTI_CHOOSE="appCloseMultiChoose" const val APP_SET_ORG_DATA="appSetOrgData"
可以将这些常量放在一个公共的类中,以便全局使用,如下所示:
```
object AppConstants {
const val LOAD_H5_SUCCESS="appLoadH5Success" //H5加载完成
const val APP_START_ACTIVITY="appStartActivity"
const val GET_GAODE_LOCATION = "appGetGaoDeLocation" //获取定位
const val BARCODESCANNER_SCAN = "appBarcodescannerScan" //扫码
const val APP_GET_FILE_BASE64 = "appGetFileBase64"
const val CAMERA_UPLOAD = "appCameraUpload" //调取拍照的功能
const val CREDENTIALS_CAMERA_UPLOAD = "appCredentialsCameraUpload" //调取证件拍照的功能
const val SCAN_BLUETOOTH = "appScanBluetooth"
const val APP_DISCONNECT_BLE="appDisConnectBle"
const val TH_PRINT = "appThPrint"
const val GET_TH_WEIGHT = "appGetThWeight"
const val GET_SJ_WEIGHT = "appGetSjWeight"
const val PDA_PRINT = "appPdaPrint"
const val GALLERY_UPLOAD = "appGalleryUpload" //上传文件
const val CREDENTIALS_GALLERY_UPLOAD = "appCredentialsGalleryUpload" //证件本地文件上传
const val FILE_UPLOAD = "appFileUpload"
const val CLEAR_CACHE = "appClearCache" //清理缓存
const val GET_CACHE_SIZE = "appGetCacheSize" //获取缓存
const val DOWNLOAD_FILE = "appDownloadFile"
const val PHONE_DEVICE = "appPhoneDevice" //H5获取手机设备信息
const val MEDIA_START_RECORD = "appMediaStartRecord" //开启录音
const val MEDIA_STOP_RECORD = "appMediaStopRecord" //结束录音
const val PDA_SCAN = "appPdaScan"
const val APP_BLE_CONNECTED = "appBleConnected"
const val APP_BLE_CONNECTED_BY_PARAMS = "appBleConnectedByParams"
const val APP_USB_CONNECTED = "appUsbConnected"
const val APP_CONNECT_USB = "appConnectUsb"
const val APP_BACK_PAGE = "appBackPage"
const val APP_LOGOUT="appLogout" //退出登录
const val APP_LOGOUT_MESSAGE="appLogoutMessage" //402 401 提示
const val APP_TOKEN_TIMEOUT="appTokenTimeOut" //token过期
const val APP_TO_BACKLOG="appToBacklog" //返回工作台
const val APP_REFRESH_BACKLOG="appRefreshBacklog" //刷新工作台
const val APP_REFRESH_BACKLOG_NUM="appRefreshBacklogNum" //刷新工作台数量
const val APP_CLOSE_MULTI_CHOOSE="appCloseMultiChoose"
const val APP_SET_ORG_DATA="appSetOrgData"
}
```
使用时只需通过类名调用即可,如 `AppConstants.LOAD_H5_SUCCESS`。这样做的好处是方便管理和维护,同时也可以避免命名冲突。
const LV_ATTRIBUTE_MEM_ALIGN LV_ATTRIBUTE_LARGE_CONST LV_ATTRIBUTE_IMG_ALERTA uint8_t alerta_map[] = { #if LV_COLOR_DEPTH == 1 || LV_COLOR_DEPTH == 8
这段代码是关于 LVGL 图形库中的一个图片资源 alerta_map 的定义。LV_ATTRIBUTE_MEM_ALIGN 和 LV_ATTRIBUTE_LARGE_CONST 是 LVGL 中用于定义对齐和常量存储的宏。LV_ATTRIBUTE_IMG_ALERTA 是一个用于告知 LVGL 图形库 alerta_map 是一个图片资源的宏。
#if LV_COLOR_DEPTH == 1 || LV_COLOR_DEPTH == 8 是一个条件编译指令,用于根据 LV_COLOR_DEPTH 变量的值来选择编译 alerta_map 数组的不同部分。如果 LV_COLOR_DEPTH 的值为 1 或 8,则编译 alerta_map 数组的前半部分。否则,编译 alerta_map 数组的后半部分。
总之,这段代码是用于定义 LVGL 图形库中的一个图片资源,并且根据编译条件选择不同的数组部分。