test: fixes to flaky navigation ui tests

android/src/main/kotlin/com/google/maps/flutter/navigation/GoogleMapView.kt

@@ -44,15 +44,15 @@ internal constructor(
     _mapView.onStart()
     _mapView.onResume()
 
+    viewRegistry.registerMapView(viewId, this)
+
     _mapView.getMapAsync { map ->
       setMap(map)
       initListeners()
       imageRegistry.mapViewInitializationComplete()
       mapReady()
       invalidateViewAfterMapLoad()
     }
-
-    viewRegistry.registerMapView(viewId, this)
   }
 
   override fun dispose() {

android/src/main/kotlin/com/google/maps/flutter/navigation/GoogleMapsAutoMapView.kt

@@ -37,10 +37,9 @@ internal constructor(
     setMap(map)
     initListeners()
     imageRegistry.mapViewInitializationComplete()
+    viewRegistry.registerAndroidAutoView(this)
     mapReady()
     invalidateViewAfterMapLoad()
-
-    viewRegistry.registerAndroidAutoView(this)
   }
 
   // Handled by AndroidAutoBaseScreen.

android/src/main/kotlin/com/google/maps/flutter/navigation/GoogleMapsNavigationView.kt

@@ -68,6 +68,8 @@ internal constructor(
     }
     _navigationView.isNavigationUiEnabled = navigationViewEnabled
 
+    viewRegistry.registerNavigationView(viewId, this)
+
     _navigationView.getMapAsync { map ->
       setMap(map)
       initListeners()
@@ -84,8 +86,6 @@ internal constructor(
       mapReady()
       invalidateViewAfterMapLoad()
     }
-
-    viewRegistry.registerNavigationView(viewId, this)
   }
 
   override fun dispose() {

example/integration_test/t03_navigation_test.dart

@@ -164,7 +164,7 @@ void main() {
     await GoogleMapsNavigator.setAudioGuidance(settings);
 
     /// Specify tolerance and navigation destination coordinates.
-    const double tolerance = 0.0005;
+    const double tolerance = 0.001;
     const double midLat = 68.59781164189049,
         midLon = 23.520303427087182,
         endLat = 68.60079240808535,
@@ -268,7 +268,7 @@ void main() {
     await startNavigationWithoutDestination($);
 
     /// Specify tolerance and navigation end coordinates.
-    const double tolerance = 0.0005;
+    const double tolerance = 0.001;
     const double endLat = 68.59451829688189, endLng = 23.512277951523007;
 
     /// Create a waypoint.

example/integration_test/t04_navigation_ui_test.dart

@@ -63,12 +63,22 @@ void main() {
         await viewControllerCompleter.future;
 
     expect(await viewController.isNavigationUIEnabled(), false);
+    waitForValueMatchingPredicate<bool>(
+      $,
+      () async => navigationUIisEnabled,
+      (bool value) => value == false,
+    );
     expect(navigationUIisEnabled, false);
 
     /// Initialize navigation.
     await GoogleMapsNavigator.initializeNavigationSession();
 
     expect(await viewController.isNavigationUIEnabled(), true);
+    waitForValueMatchingPredicate<bool>(
+      $,
+      () async => navigationUIisEnabled,
+      (bool value) => value == true,
+    );
     expect(navigationUIisEnabled, true);
 
     await $.pumpAndSettle();
@@ -114,6 +124,11 @@ void main() {
       expect(isEnabled, result);
 
       /// Test that NavigationUIEnabledChanged event works.
+      waitForValueMatchingPredicate<bool>(
+        $,
+        () async => navigationUIisEnabled,
+        (bool value) => value == result,
+      );
       expect(navigationUIisEnabled, result);
     }
 

ios/google_navigation_flutter/Sources/google_navigation_flutter/GoogleMapsNavigationView.swift

@@ -89,13 +89,13 @@ public class GoogleMapsNavigationView: NSObject, FlutterPlatformView, ViewSettle
     _mapConfiguration.apply(to: _mapView)
 
     super.init()
-
-    _navigationUIEnabledPreference = navigationUIEnabledPreference
-    applyNavigationUIEnabledPreference()
-
     registerView()
+
     _mapView.delegate = self
     _mapView.viewSettledDelegate = self
+
+    _navigationUIEnabledPreference = navigationUIEnabledPreference
+    applyNavigationUIEnabledPreference()
   }
 
   deinit {