InfoWindow Size自适应便宜量

example/lib/pages/overlays/custom_info_window.dart

@@ -28,7 +28,8 @@ class _State extends State<CustomInfoWindowDemoPage> {
         color: Colors.lightBlue.shade400,
         child: Text('info'),
       ),
-      option: InfoWindowOption(latLng: mapCenter));
+      option: InfoWindowOption(
+          latLng: mapCenter, offset: EdgeInsets.only(bottom: 32)));
 
   Future<void> _onMapCreated(AMapController controller) async {}
 

lib/src/amap_loader.dart

@@ -58,6 +58,7 @@ class _AMapLoaderState extends State<AMapLoader> {
         buildContext: context,
         currentStep: CurrentStep.preparing,
         loader: widget);
+
     widget.prepareFromExtension(aMapContext);
     super.didChangeDependencies();
   }

lib/src/amap_widget.dart

@@ -234,7 +234,6 @@ class _MapState extends State<AMapWidget> {
     if (_extensions.isNotEmpty) {
       debugPrint('[onPlatformViewCreated] $controller');
       await Future.forEach(_extensions.values, (e) {
-        debugPrint('[onPlatformViewCreated] controller: ${controller.mapId}');
         e.bindMethodChannel(controller.channel);
         e.bindMapController(controller);
       });

lib/src/extension/buildin/info_window_extension.dart

@@ -1,7 +1,7 @@
 import 'dart:async';
 
 import 'package:amap_map/amap_map.dart';
-import 'package:flutter/material.dart';
+import 'package:flutter/widgets.dart';
 import 'package:x_amap_base/x_amap_base.dart';
 
 /// [amap_map]插件支持默认的[InfoWindow]展示[title]和[snippet]字段，如果要自定义
@@ -37,12 +37,13 @@ import 'package:x_amap_base/x_amap_base.dart';
 class InfoWindowExtension extends AMapExtension {
   InfoWindowExtension({required this.infoWindow, this.option});
 
-  StreamController<InfoWindowExtension> _streamController =
+  final _streamController = StreamController<InfoWindowExtension>.broadcast();
-      StreamController<InfoWindowExtension>.broadcast();
 
   final Widget infoWindow;
   InfoWindowOption? option;
 
+  final GlobalKey _infoWindowKey = GlobalKey();
+
   AMapController? mapController;
   double? _x;
   double? _y;
@@ -67,6 +68,12 @@ class InfoWindowExtension extends AMapExtension {
     _x = coordinate.x.toDouble();
     _y = coordinate.y.toDouble();
 
+    final size = _infoWindowKey.currentContext?.size;
+    if (size != null && _x != null && _y != null) {
+      _x = _x! - size.width / 2;
+      _y = _y! - size.height;
+    }
+
     _streamController.add(this);
   }
 
@@ -79,10 +86,10 @@ class InfoWindowExtension extends AMapExtension {
   @override
   Widget build(AMapContext aMapContext, Widget child) {
     return Stack(
+      key: ValueKey(this),
       children: [
         child,
         StreamBuilder<InfoWindowExtension>(
-            key: ValueKey(this),
             initialData: this,
             stream: _streamController.stream,
             builder: (context, snapshot) {
@@ -97,6 +104,7 @@ class InfoWindowExtension extends AMapExtension {
                 top: data._y,
                 left: data._x,
                 child: Container(
+                  key: _infoWindowKey,
                   margin: data.option?.offset,
                   child: infoWindow,
                 ),
@@ -105,6 +113,12 @@ class InfoWindowExtension extends AMapExtension {
       ],
     );
   }
+
+  @override
+  void onDispose() {
+    _streamController.close();
+    super.onDispose();
+  }
 }
 
 class InfoWindowOption {