From f2f2348b54be3fd50d15809bdb8cc6b9763d7bef Mon Sep 17 00:00:00 2001
From: userGyl <user_gyl@163.com>
Date: Tue, 23 Dec 2025 10:18:44 +0800
Subject: [PATCH] =?UTF-8?q?=E9=80=86=E5=9C=B0=E7=90=86=E7=BC=96=E7=A0=81?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 ln_jq_app/assets/html/map.html | 70 ++++++++++++++++++++++++++++++++--
 1 file changed, 66 insertions(+), 4 deletions(-)

diff --git a/ln_jq_app/assets/html/map.html b/ln_jq_app/assets/html/map.html
index 3df0453..5e71f6b 100644
--- a/ln_jq_app/assets/html/map.html
+++ b/ln_jq_app/assets/html/map.html
@@ -137,7 +137,7 @@
 
     <!-- 2. 加载地图和插件 (去掉了 Geolocation 插件，避免弹窗) -->
     <script
-        src="https://webapi.amap.com/maps?v=2.0&key=2cc1d822e313307fe311c3127a1deeb5&plugin=AMap.MoveAnimation,AMap.Driving,AMap.TruckDriving,AMap.AutoComplete,AMap.ToolBar,AMap.Scale">
+        src="https://webapi.amap.com/maps?v=2.0&key=2cc1d822e313307fe311c3127a1deeb5&plugin=AMap.MoveAnimation,AMap.Driving,AMap.TruckDriving,AMap.AutoComplete,AMap.ToolBar,AMap.Scale,AMap.Geocoder">
     </script>
 </head>
 
@@ -167,9 +167,11 @@
     </div>
 
     <script>
-        var map, marker, driving, truckDriving;
+        var map, marker, driving, truckDriving, geocoder;
         var currentLat, currentLng;
         var isTruckMode = false;
+        var isInitialLocationSet = false;
+
 
         function initMap() {
             map = new AMap.Map('container', {
@@ -178,6 +180,11 @@
                 viewMode: '3D'
             });
 
+            // --- 2. 初始化 geocoder ---
+            geocoder = new AMap.Geocoder({
+                city: "全国" // 设置地理编码范围
+            });
+
             // 通知 Flutter 地图加载完毕
             map.on('complete', function () {
                 console.log("JS->: Map is ready.");
@@ -230,6 +237,7 @@
         /**
          * 核心功能 1: 接收 Flutter 传来的定位数据
          * Flutter 端调用: webViewController.evaluateJavascript("updateMyLocation(...)")
+         *  经度  维度
          */
         function updateMyLocation(lat, lng, angle) {
             var rawLat = parseFloat(lat);
@@ -244,6 +252,7 @@
                     currentLat = mPoint.lat;
                     var position = [currentLng, currentLat];
 
+                    // 更新车辆标记位置 (保持不变)
                     if (!marker) {
                         marker = new AMap.Marker({
                             map: map,
@@ -254,8 +263,6 @@
                             angle: isNaN(rawAngle) ? 0 : rawAngle,
                         });
                         map.setCenter(position);
-
-
                     } else {
                         marker.moveTo(position, {
                             duration: 1000,
@@ -263,6 +270,61 @@
                         });
                         if (!isNaN(rawAngle)) marker.setAngle(rawAngle);
                     }
+
+                    // --- 4. 逆地理编码并设置默认起点 ---
+                    // 只有在第一次获取到位置时，才设置默认起点，避免覆盖用户手动输入的起点
+                    if (!isInitialLocationSet) {
+                        geocoder.getAddress(position, function (status, result) {
+                            if (status === 'complete' && result.regeocode) {
+                                let shortAddress = '';
+                                const regeo = result.regeocode;
+                                const addressComponent = regeo.addressComponent;
+                                const pois = regeo.pois;
+
+                                // 策略1: 优先使用最近的、类型合适的POI的名称
+                                if (pois && pois.length > 0) {
+                                    // 查找第一个类型不是“商务住宅”或“地名地址信息”的POI，这类POI通常是具体的建筑或地点名
+                                    const significantPoi = pois.find(p => p.type.indexOf('商务住宅') === -
+                                        1 && p.type.indexOf('地名地址信息') === -1);
+                                    if (significantPoi) {
+                                        shortAddress = significantPoi.name;
+                                    } else {
+                                        // 如果找不到，就用第一个POI的名字
+                                        shortAddress = pois[0].name;
+                                    }
+                                }
+                                // 策略2: 如果没有POI，使用"道路+门牌号"
+                                else if (addressComponent.street && addressComponent.streetNumber) {
+                                    shortAddress = addressComponent.street + addressComponent
+                                        .streetNumber;
+                                }
+                                // 策略3: 如果还没有，使用"区+乡镇"
+                                else if (addressComponent.district) {
+                                    shortAddress = addressComponent.district + (addressComponent
+                                        .township || '');
+                                }
+                                // 策略4: 降级到使用完整的、但可能很长的地址
+                                else {
+                                    shortAddress = regeo.formattedAddress;
+                                }
+
+                                // 如果拼接出的地址过长，可以再做一次截断
+                                if (shortAddress.length > 20) {
+                                    // 可以在这里添加更复杂的截断逻辑，比如按关键字
+                                    shortAddress = regeo.formattedAddress.substring(0, 20) + '...';
+                                }
+
+
+                                // 将获取到的地址填充到起点输入框
+                                document.getElementById('startInput').value = shortAddress;
+                                isInitialLocationSet = true; // 标记为已设置，不再更新
+                            } else {
+                                // 如果逆地理编码失败，依然使用“当前位置”作为提示
+                                document.getElementById('startInput').placeholder = "当前位置";
+                                console.error('逆地理编码失败:', result);
+                            }
+                        });
+                    }
                 }
             });
         }