95 lines
2.9 KiB
Dart
Executable File
95 lines
2.9 KiB
Dart
Executable File
import 'dart:io';
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import 'dart:typed_data';
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import 'package:flutter/material.dart';
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import 'package:flutter_map/flutter_map.dart';
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// import 'package:flutter_map_tile_caching/flutter_map_tile_caching.dart';
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import 'package:http/http.dart' as http;
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import 'package:path_provider/path_provider.dart';
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import 'package:path/path.dart' as path;
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import 'dart:ui' as ui;
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/// 地图瓦片缓存工具类
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class KRFMTC {
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static const String kr_storeName = 'kaer_map_store';
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/// HTTP 客户端，用于复用连接
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static late final http.Client _httpClient = http.Client();
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/// 瓦片提供者实例
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static late final TileProvider _tileProvider = NetworkTileProvider();
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/// 判断是否在中国大陆
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static bool _kr_isInMainlandChina() {
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// 获取系统语言
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final List<Locale> systemLocales = ui.window.locales;
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final String? languageCode = systemLocales.isNotEmpty ? systemLocales.first.languageCode : null;
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final String? countryCode = systemLocales.isNotEmpty ? systemLocales.first.countryCode : null;
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// 获取系统时区
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final String timeZoneName = DateTime.now().timeZoneName;
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// 检查是否为中文语言环境
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bool isChineseLanguage = languageCode == 'zh';
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// 检查是否为中国地区代码
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bool isChineseRegion = countryCode == 'CN';
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// 检查是否为中国时区
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bool isChineseTimezone = timeZoneName.contains('China') || timeZoneName == 'Asia/Shanghai';
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// 如果同时满足语言和地区或时区条件，则认为在中国大陆
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return (isChineseLanguage && (isChineseRegion || isChineseTimezone));
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}
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/// 获取地图瓦片URL
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static String kr_getTileUrl() {
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if (_kr_isInMainlandChina()) {
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// 使用高德地图
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return 'https://webst0{s}.is.autonavi.com/appmaptile?style=7&x={x}&y={y}&z={z}';
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} else {
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// 使用 OpenStreetMap
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return 'https://tile.openstreetmap.org/{z}/{x}/{y}.png';
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}
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}
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/// 获取地图瓦片子域名
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static List<String> kr_getTileSubdomains() {
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if (_kr_isInMainlandChina()) {
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return ['1', '2', '3', '4'];
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} else {
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return ['a', 'b', 'c'];
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}
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}
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/// 获取地图瓦片提供者
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static TileProvider kr_getTileProvider() {
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return _tileProvider;
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}
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/// 初始化地图缓存
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static Future<void> kr_initMapCache() async {
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// 不使用缓存，无需实现
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}
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/// 清理地图缓存
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static Future<void> kr_clearMapCache() async {
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// 不使用缓存，无需实现
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}
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/// 检查瓦片是否已缓存
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static Future<bool> kr_isTileCached({
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required TileCoordinates coords,
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required TileLayer options,
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}) async {
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return false;
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}
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/// 获取缓存状态信息
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static Future<({bool isAvailable, int cacheCount, String cacheSize})> kr_checkCacheStatus() async {
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return (isAvailable: false, cacheCount: 0, cacheSize: '0 MB');
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}
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/// 释放资源
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static void kr_dispose() {
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_httpClient.close();
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}
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} |