在地图上显示定位

lib/pages/home/widgets/map_widget.dart

@@ -7,8 +7,7 @@ import 'package:amap_flutter_map/amap_flutter_map.dart';
 import 'package:autosos_flutter/const_config.dart';
 import 'package:flutter/material.dart';
 import 'package:permission_handler/permission_handler.dart';
-
-
+import 'package:amap_flutter_base/amap_flutter_base.dart';
 
 class MapWidget extends StatefulWidget {
   const MapWidget({super.key});
@@ -19,11 +18,21 @@ class MapWidget extends StatefulWidget {
 
 class _MapWidgetState extends State<MapWidget> {
   late AMapController _mapController;
-  late Map<String, Object> _locationResult;
+  Map<String, Object> _locationResult = {};
+  late StreamSubscription<Map<String, Object>> _locationListener;
+  final AMapFlutterLocation _locationPlugin = AMapFlutterLocation();
+
+  @override
+  void dispose() {
+    super.dispose();
+    _locationListener.cancel();
+    _locationPlugin.destroy();
+  }
 
   @override
   void initState() {
     super.initState();
+
     /// 设置是否已经包含高德隐私政策并弹窗展示显示用户查看，如果未包含或者没有弹窗展示，高德定位SDK将不会工作
     ///
     /// 高德SDK合规使用方案请参考官网地址：https://lbs.amap.com/news/sdkhgsy
@@ -59,15 +68,15 @@ class _MapWidgetState extends State<MapWidget> {
     ///Android: https://lbs.amap.com/api/android-location-sdk/guide/create-project/get-key
     ///
     ///iOS: https://lbs.amap.com/api/ios-location-sdk/guide/create-project/get-key
-    AMapFlutterLocation.setApiKey(
-        ConstConfig.androidKey, ConstConfig.iosKey);
-
+    AMapFlutterLocation.setApiKey(ConstConfig.androidKey, ConstConfig.iosKey);
 
     ///iOS 获取native精度类型
     if (Platform.isIOS) {
       requestAccuracyAuthorization();
     }
 
+    _locationPlugin.setLocationOption(AMapLocationOption());
+
     ///注册定位结果监听
     _locationListener = _locationPlugin
         .onLocationChanged()
@@ -75,13 +84,15 @@ class _MapWidgetState extends State<MapWidget> {
       setState(() {
         _locationResult = result;
       });
-      print("locationRest=$_locationResult");
+      print("location=$_locationResult");
+      WidgetsBinding.instance.addPostFrameCallback((timeStamp) {
+        _moveCamera(_locationResult);
+      });
     });
+    _locationPlugin.startLocation();
+
   }
 
-  late StreamSubscription<Map<String, Object>> _locationListener;
-
-  final AMapFlutterLocation _locationPlugin = new AMapFlutterLocation();
   @override
   Widget build(BuildContext context) {
     AMapWidget map = AMapWidget(
@@ -126,15 +137,21 @@ class _MapWidgetState extends State<MapWidget> {
     ));
   }
 
+  void _moveCamera(Map<String,Object> result) {
+    double lat = double.parse(result['latitude'] as String);
+    double lng = double.parse(result['longitude'] as String);
+    _mapController.moveCamera(
+        CameraUpdate.newCameraPosition(CameraPosition(target: LatLng(lat,lng))));
+  }
 
   ///获取审图号
   void getApprovalNumber() async {
     //普通地图审图号
     String? mapContentApprovalNumber =
-    await _mapController.getMapContentApprovalNumber();
+        await _mapController.getMapContentApprovalNumber();
     //卫星地图审图号
     String? satelliteImageApprovalNumber =
-    await _mapController.getSatelliteImageApprovalNumber();
+        await _mapController.getSatelliteImageApprovalNumber();
     print('地图审图号（普通地图）: $mapContentApprovalNumber');
     print('地图审图号（卫星地图): $satelliteImageApprovalNumber');
   }
@@ -160,7 +177,6 @@ class _MapWidgetState extends State<MapWidget> {
     } else {
       //未授权则发起一次申请
       status = await Permission.locationAlways.request();
-      print("status=$status");
       if (status == PermissionStatus.granted) {
         return true;
       } else {
@@ -172,7 +188,7 @@ class _MapWidgetState extends State<MapWidget> {
   ///获取iOS native的accuracyAuthorization类型
   void requestAccuracyAuthorization() async {
     AMapAccuracyAuthorization currentAccuracyAuthorization =
-    await _locationPlugin.getSystemAccuracyAuthorization();
+        await _locationPlugin.getSystemAccuracyAuthorization();
     if (currentAccuracyAuthorization ==
         AMapAccuracyAuthorization.AMapAccuracyAuthorizationFullAccuracy) {
       print("精确定位类型");