修改地图卡片

lib/modules/chat/views/chat_navigation_card.dart

@@ -3,7 +3,6 @@ import 'dart:convert';
 import 'dart:math';
 import 'dart:math' as math;
 
-import 'package:amap_flutter/amap_flutter.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_screenutil/flutter_screenutil.dart';
 import 'package:http/http.dart' as http;
@@ -25,10 +24,7 @@ class _ChatNavigationCardState extends State<ChatNavigationCard> {
   LatLng startPoint = LatLng(116.397428, 39.90923); // 起点坐标
   LatLng endPoint = LatLng(116.397026, 39.903303); // 终点坐标
 
-  final _amapFlutter = AmapFlutter();
-  StreamSubscription? _locationStream;
-
-  String _mapUrl = '';
+  late Future _mapUrl;
 
   @override
   void initState() {
@@ -36,30 +32,18 @@ class _ChatNavigationCardState extends State<ChatNavigationCard> {
     _getLocation();
   }
 
-  @override
-  void dispose() {
-    _amapFlutter.dispose();
-    _locationStream?.cancel();
-    super.dispose();
-  }
-
-  void _getLocation() async {
+  void _getLocation() {
+    List startPointList = widget.data?['location'].split(',');
     List endPointList = widget.data?['destination'].split(',');
+    startPoint = LatLng(
+      double.parse(startPointList[0]),
+      double.parse(startPointList[1]),
+    );
     endPoint = LatLng(
       double.parse(endPointList[0]),
       double.parse(endPointList[1]),
     );
-    await _amapFlutter.initLocation();
-    _locationStream = _amapFlutter.locationStream().listen((data) async {
-      startPoint = LatLng(
-        data['longitude'],
-        data['latitude'],
-      );
-      _mapUrl = await _getMapUrl();
-      _amapFlutter.stopLocation();
-      setState(() {});
-    });
-    _amapFlutter.startLocation();
+    _mapUrl = _getMapUrl();
   }
 
   Future<String> _getMapUrl() async {
@@ -193,9 +177,15 @@ class _ChatNavigationCardState extends State<ChatNavigationCard> {
   Widget build(BuildContext context) {
     return Column(
       children: [
-        _mapUrl.isNotEmpty
-            ? Image.network(_mapUrl)
-            : const CircularProgressIndicator(),
+        FutureBuilder(
+          future: _mapUrl,
+          builder: (BuildContext context, AsyncSnapshot snapshot) {
+            if (snapshot.hasData) {
+              return Image.network(snapshot.data);
+            }
+            return const CircularProgressIndicator();
+          },
+        ),
         10.verticalSpace,
         Text(
           widget.content,