fix 导航数据显示优化

 <!--
  * @Date: 2023-05-19 14:54:27
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2024-08-19 17:33:28
+ * @LastEditTime: 2024-08-19 17:42:32
  * @FilePath: /map-demo/src/views/index.vue
  * @Description: 公众地图主体页面
 -->
@@ -48,6 +48,7 @@
           <van-icon name="https://cdn.ipadbiz.cn/xys/map/%E5%AE%9A%E4%BD%8Dloc@2x.png" size="1.5rem"
             style="vertical-align: middle;" />
         </div> -->
+        <div v-if="Object.keys(data_paths)?.length">
           <div v-if="open_safe_route" class="item" @click="handleSafeRoute(true)">
             <van-icon name="https://cdn.ipadbiz.cn/xys/map/%E7%BA%BF%E8%B7%AF01.png" size="1.5rem"
               style="position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);" />
@@ -58,6 +59,7 @@
           </div>
         </div>
       </div>
+    </div>
 
     <!-- <div v-if="!show_walk_route" @click="removeWalkRoute" class="walk-nav-text">
       关闭步行导航
@@ -260,7 +262,7 @@ export default {
     this.data_zoom = data.map.zoom; // 地图默认缩放
     this.data_rotation = data.map.rotation; // 地图旋转角度
     this.data_zooms = data.map.zooms.map(item => Number(item)); // 地图默认缩放范围
-    this.data_paths = data.map.path; // 地图默认导航路径
+    this.data_paths = data.map.path ? data.map.path : {}; // 地图默认导航路径
     // 初始化地图
     this.initMap();
     // this.setMapBoundary();