[google_maps_flutter][iOS 17] takeSnapshot FIX

packages/google_maps_flutter/google_maps_flutter_ios/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 2.4.2
+
+* Fixes a bug in "takeSnapshot" function that incorrectly returns a blank image on iOS 17.
+
 ## 2.4.1
 
 * Restores the workaround to exclude arm64 simulator builds, as it is still necessary for applications targeting iOS 12.

packages/google_maps_flutter/google_maps_flutter_ios/example/ios12/integration_test/google_maps_test.dart

@@ -849,9 +849,7 @@ void main() {
         await controllerCompleter.future;
     final Uint8List? bytes = await controller.takeSnapshot();
     expect(bytes?.isNotEmpty, true);
-  },
-      // TODO(stuartmorgan): Re-enable; see https://github.com/flutter/flutter/issues/139825
-      skip: true);
+  });
 
   testWidgets(
     'set tileOverlay correctly',

packages/google_maps_flutter/google_maps_flutter_ios/ios/Classes/GoogleMapController.m

@@ -250,13 +250,12 @@ - (void)onMethodCall:(FlutterMethodCall *)call result:(FlutterResult)result {
     result(nil);
   } else if ([call.method isEqualToString:@"map#takeSnapshot"]) {
     if (self.mapView != nil) {
-      UIGraphicsImageRendererFormat *format = [UIGraphicsImageRendererFormat defaultFormat];
-      format.scale = [[UIScreen mainScreen] scale];
       UIGraphicsImageRenderer *renderer =
-          [[UIGraphicsImageRenderer alloc] initWithSize:self.mapView.frame.size format:format];
-
+          [[UIGraphicsImageRenderer alloc] initWithSize:self.mapView.bounds.size];
+      // For some unknown reason mapView.layer::renderInContext API returns a blank image on iOS 17.
+      // So we have to use drawViewHierarchyInRect API.
       UIImage *image = [renderer imageWithActions:^(UIGraphicsImageRendererContext *context) {
-        [self.mapView.layer renderInContext:context.CGContext];
+        [self.mapView drawViewHierarchyInRect:self.mapView.bounds afterScreenUpdates:YES];
       }];
       result([FlutterStandardTypedData typedDataWithBytes:UIImagePNGRepresentation(image)]);
     } else {

packages/google_maps_flutter/google_maps_flutter_ios/pubspec.yaml

@@ -2,7 +2,7 @@ name: google_maps_flutter_ios
 description: iOS implementation of the google_maps_flutter plugin.
 repository: https://github.com/flutter/packages/tree/main/packages/google_maps_flutter/google_maps_flutter_ios
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+maps%22
-version: 2.4.1
+version: 2.4.2
 
 environment:
   sdk: ^3.2.3