提交：修改导航退出返回多次问题；

example/ios/Flutter/AppFrameworkInfo.plist

@@ -21,6 +21,6 @@
   <key>CFBundleVersion</key>
   <string>1.0</string>
   <key>MinimumOSVersion</key>
-  <string>9.0</string>
+  <string>11.0</string>
 </dict>
 </plist>

example/ios/Podfile

 # Uncomment this line to define a global platform for your project
-# platform :ios, '9.0'
+# platform :ios, '11.0'
 
 # CocoaPods analytics sends network stats synchronously affecting flutter build latency.
 ENV['COCOAPODS_DISABLE_STATS'] = 'true'

example/ios/Podfile.lock

@@ -26,8 +26,8 @@ SPEC CHECKSUMS:
   AMapFoundation: f48153f724114b58da9b01875ab88a1f6856e3db
   AMapNavi: 04727c06ec51fc4d7c57d83e2542da81b32f2f59
   clx_map_navigation: b73614901161608d76ebfe6ec266773bdfe00b26
-  Flutter: 50d75fe2f02b26cc09d224853bb45737f8b3214a
+  Flutter: f04841e97a9d0b0a8025694d0796dd46242b2854
 
-PODFILE CHECKSUM: 8e679eca47255a8ca8067c4c67aab20e64cb974d
+PODFILE CHECKSUM: 663715e941f9adb426e33bf9376914006f9ea95b
 
 COCOAPODS: 1.11.3

example/ios/Runner.xcodeproj/project.pbxproj

@@ -350,7 +350,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 11.0;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = iphoneos;
 				SUPPORTED_PLATFORMS = iphoneos;
@@ -425,7 +425,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 11.0;
 				MTL_ENABLE_DEBUG_INFO = YES;
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = iphoneos;
@@ -474,7 +474,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 11.0;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = iphoneos;
 				SUPPORTED_PLATFORMS = iphoneos;

example/lib/map_config.dart

@@ -11,7 +11,5 @@ class AMapConfig {
 
   static onMapClosed() {
     print("----- onMapClosed ---- 处理完了");
-
-
   }
 }
\ No newline at end of file

example/pubspec.lock

@@ -14,7 +14,7 @@ packages:
       name: async
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "2.8.2"
+    version: "2.9.0"
   boolean_selector:
     dependency: transitive
     description:
@@ -28,21 +28,14 @@ packages:
       name: characters
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.2.0"
-  charcode:
-    dependency: transitive
-    description:
-      name: charcode
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "1.3.1"
+    version: "1.2.1"
   clock:
     dependency: transitive
     description:
       name: clock
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.1.0"
+    version: "1.1.1"
   clx_map_navigation:
     dependency: "direct main"
     description:
@@ -70,7 +63,7 @@ packages:
       name: fake_async
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.3.0"
+    version: "1.3.1"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -101,28 +94,28 @@ packages:
       name: matcher
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "0.12.11"
+    version: "0.12.12"
   material_color_utilities:
     dependency: transitive
     description:
       name: material_color_utilities
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "0.1.4"
+    version: "0.1.5"
   meta:
     dependency: transitive
     description:
       name: meta
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.7.0"
+    version: "1.8.0"
   path:
     dependency: transitive
     description:
       name: path
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.8.1"
+    version: "1.8.2"
   plugin_platform_interface:
     dependency: transitive
     description:
@@ -141,7 +134,7 @@ packages:
       name: source_span
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.8.2"
+    version: "1.9.0"
   stack_trace:
     dependency: transitive
     description:
@@ -169,21 +162,21 @@ packages:
       name: string_scanner
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.1.0"
+    version: "1.1.1"
   term_glyph:
     dependency: transitive
     description:
       name: term_glyph
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "1.2.0"
+    version: "1.2.1"
   test_api:
     dependency: transitive
     description:
       name: test_api
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "0.4.9"
+    version: "0.4.12"
   vector_math:
     dependency: transitive
     description:

lib/amap_navigation_widget.dart

@@ -10,7 +10,7 @@ import 'package:amap_flutter_base/amap_flutter_base.dart';
 import 'package:flutter/services.dart';
 
 final MethodChannelClxMapNavigation _methodChannel = ClxMapNavigationPlatform.instance as MethodChannelClxMapNavigation;
-typedef void MapClosedCallback();
+typedef MapClosedCallback = void Function();
 
 class AMapNavigationWidget extends StatefulWidget {
 
@@ -40,6 +40,9 @@ class AMapNavigationWidget extends StatefulWidget {
 
 class _MapNavigationState extends State<AMapNavigationWidget> {
 
+  //消息订阅对象
+  late StreamSubscription _streamSubscription;
+
   @override
   void initState() {
     super.initState();
@@ -51,11 +54,12 @@ class _MapNavigationState extends State<AMapNavigationWidget> {
     _methodChannel.channel().setMethodCallHandler((call) => _handleMethodCall(call));
   }
 
+  // 监听
   _connectStreams() {
     print("---_connectStreams---");
     if (widget.onMapClosed != null) {
       print("------ _connectStreams listen ----- ");
-      _methodChannel.onMapClosed().listen((MapClosedEvent e) => widget.onMapClosed!());
+      _streamSubscription = _methodChannel.onMapClosed().listen((MapClosedEvent e) => widget.onMapClosed!());
     }
   }
 
@@ -79,7 +83,6 @@ class _MapNavigationState extends State<AMapNavigationWidget> {
       'endPoint': widget.endPoint,
     };
     print("--- build --- creationParams: $creationParams");
-
     Widget mapView = _methodChannel.buildMapNavigationView(
       creationParams,
       widget.gestureRecognizers,
@@ -93,4 +96,11 @@ class _MapNavigationState extends State<AMapNavigationWidget> {
     print("********** 地图路径规划 ***********id="+id.toString());
   }
 
+  @override
+  void dispose() {
+    super.dispose();
+    //取消监听
+    _streamSubscription.cancel();
+  }
+
 }

lib/core/amap_navigation_util.dart

 import 'package:flutter/material.dart';
 
 class AMapNavigationUtil {
-  static AMapNavigationUtil _instance = AMapNavigationUtil._();
+  static final AMapNavigationUtil _instance = AMapNavigationUtil._();
   static double _devicePixelRatio = 0;
   static void init(BuildContext context) {
     _devicePixelRatio = MediaQuery.of(context).devicePixelRatio;

lib/core/clx_map_navigation_method_channel.dart

@@ -26,6 +26,7 @@ class MethodChannelClxMapNavigation extends ClxMapNavigationPlatform {
       Set<Factory<OneSequenceGestureRecognizer>> gestureRecognizers,
       void Function(int id) onPlatformViewCreated,
       MapClosedCallback? onMapClosed,) {
+
     print("--- buildMapNavigationView --- creationParams: $creationParams");
 
     if (defaultTargetPlatform == TargetPlatform.android) {
@@ -59,7 +60,7 @@ class MethodChannelClxMapNavigation extends ClxMapNavigationPlatform {
   // 根据mapid返回相应的event.
   Stream<MapEvent> _events() => _mapEventStreamController.stream;
 
-  // 底部退出回调
+  // 底部退出回调  - whereType：返回特定对象【筛选】
   Stream<MapClosedEvent> onMapClosed() {
     return _events().whereType<MapClosedEvent>();
   }