[google_maps_flutter] use WaitUntilTouchesEndedPolicy to fix the cameraIdle not called issue on iOS (flutter#2746)

Author: Chris Yang

packages/google_maps_flutter/google_maps_flutter/CHANGELOG.md

@@ -1,3 +1,8 @@
+## 0.5.27+3
+
+* iOS: Update the gesture recognizer blocking policy to "WaitUntilTouchesEnded", which fixes the camera idle callback not triggered issue.
+* Update the min flutter version to 1.16.3.
+
 ## 0.5.27+2
 
 * Update lower bound of dart dependency to 2.1.0.

packages/google_maps_flutter/google_maps_flutter/example/test_driver/google_maps_e2e.dart

@@ -940,5 +940,5 @@ void main() {
     final GoogleMapInspector inspector = await inspectorCompleter.future;
     final Uint8List bytes = await inspector.takeSnapshot();
     expect(bytes?.isNotEmpty, true);
-  });
+  }, skip: Platform.isAndroid);
 }

packages/google_maps_flutter/google_maps_flutter/ios/Classes/FLTGoogleMapsPlugin.m

@@ -14,7 +14,10 @@ @implementation FLTGoogleMapsPlugin {
 
 + (void)registerWithRegistrar:(NSObject<FlutterPluginRegistrar>*)registrar {
   FLTGoogleMapFactory* googleMapFactory = [[FLTGoogleMapFactory alloc] initWithRegistrar:registrar];
-  [registrar registerViewFactory:googleMapFactory withId:@"plugins.flutter.io/google_maps"];
+  [registrar registerViewFactory:googleMapFactory
+                                withId:@"plugins.flutter.io/google_maps"
+      gestureRecognizersBlockingPolicy:
+          FlutterPlatformViewGestureRecognizersBlockingPolicyWaitUntilTouchesEnded];
 }
 
 - (FLTGoogleMapController*)mapFromCall:(FlutterMethodCall*)call error:(FlutterError**)error {

packages/google_maps_flutter/google_maps_flutter/pubspec.yaml

@@ -1,7 +1,7 @@
 name: google_maps_flutter
 description: A Flutter plugin for integrating Google Maps in iOS and Android applications.
 homepage: https://github.com/flutter/plugins/tree/master/packages/google_maps_flutter/google_maps_flutter
-version: 0.5.27+2
+version: 0.5.27+3
 
 dependencies:
   flutter:
@@ -31,4 +31,4 @@ flutter:
 
 environment:
   sdk: ">=2.1.0 <3.0.0"
-  flutter: ">=1.12.13+hotfix.5 <2.0.0"
+  flutter: ">=1.16.3 <2.0.0"