Fix location indicator example

Author: TarekTolba1

arcgis_map_sdk_ios/ios/arcgis_map_sdk_ios/Sources/arcgis_map_sdk_ios/ArcgisMapView.swift

@@ -112,6 +112,7 @@ class ArcgisMapView: NSObject, FlutterPlatformView {
     private func setupMethodChannel() {
         methodChannel.setMethodCallHandler({ [self] (call: FlutterMethodCall, result: @escaping FlutterResult) -> Void in
             switch (call.method) {
+            case "on_init_complete": waitForViewToInit(call, result)
             case "zoom_in": onZoomIn(call, result)
             case "zoom_out": onZoomOut(call, result)
             case "rotate" : onRotate(call, result)
@@ -142,6 +143,16 @@ class ArcgisMapView: NSObject, FlutterPlatformView {
             }
         })
     }
+    
+    private func waitForViewToInit(_ call: FlutterMethodCall, _ result: @escaping FlutterResult) {
+        if mapContentView.viewModel.mapViewProxy != nil {
+                result(true)
+        } else {
+            mapContentView.viewModel.onViewInit = { [weak self] in
+                result(true)
+            }
+        }
+    }
 
     private func onZoomIn(_ call: FlutterMethodCall, _ result: @escaping FlutterResult) {
          let currentScale = mapContentView.viewModel.viewpoint.targetScale

arcgis_map_sdk_ios/ios/arcgis_map_sdk_ios/Sources/arcgis_map_sdk_ios/MapContentView.swift

@@ -42,6 +42,7 @@ struct MapContentView: View {
             .task {
                 // Store the mapViewProxy for external access
                 viewModel.mapViewProxy = mapViewProxy
+                viewModel.onViewInit?();
             }
             .onDisappear {
                 viewModel.stopLocationDataSource()
@@ -68,6 +69,7 @@ class MapViewModel: ObservableObject {
     var onScaleChanged: ((Double) -> Void)?
     var onVisibleAreaChanged: ((Polygon) -> Void)?
     var onLoadStatusChanged: ((LoadStatus) -> Void)?
+    var onViewInit: (() -> Void)?
 
     init(viewpoint : Viewpoint) {
         self.viewpoint = viewpoint

arcgis_map_sdk_method_channel/lib/src/method_channel_arcgis_map_plugin.dart

@@ -1,3 +1,5 @@
+import 'dart:io';
+
 import 'package:arcgis_map_sdk_method_channel/src/model_extension.dart';
 import 'package:arcgis_map_sdk_platform_interface/arcgis_map_sdk_platform_interface.dart';
 import 'package:flutter/services.dart';
@@ -14,7 +16,11 @@ class MethodChannelArcgisMapPlugin extends ArcgisMapPlatform {
 
   /// This method is called when the plugin is first initialized.
   @override
-  Future<void> init(int mapId) async {}
+  Future<void> init(int mapId) async {
+    if (Platform.isIOS) {
+      return _methodChannelBuilder(mapId).invokeMethod('on_init_complete');
+    }
+  }
 
   @override
   Future<FeatureLayer> addFeatureLayer(

example/lib/location_indicator_example_page.dart

@@ -135,8 +135,6 @@ class _LocationIndicatorExamplePageState
     await Geolocator.requestPermission();
     final location = await Geolocator.getLastKnownPosition();
     if (!mounted || location == null) return;
-    // Small delay to let the map render before moving the camera
-    await Future.delayed(Duration(milliseconds: 500));
     await _controller!.moveCamera(
       point: LatLng(location.latitude, location.longitude),
       zoomLevel: 16,
@@ -167,6 +165,7 @@ class _LocationIndicatorExamplePageState
 
   Future<void> _switchLocationSource() async {
     await _controller!.locationDisplay.stopSource();
+    _isStarted = false;
     await _controller!.setLocationDisplay(
       _isManualLocationSource
           ? ArcgisLocationDisplay()