[pigeon] void method generation for Swift produces PlatformException #111083
Description
Steps to Reproduce
Sample pigeon file:
import 'package:pigeon/pigeon.dart';
@ConfigurePigeon(
PigeonOptions(
dartOut: 'lib/generated/test_api.dart',
swiftOut: 'ios/Runner/TestApi.swift',
),
)
@HostApi()
abstract class TestApi {
void test();
}Implementation in Swift:
class MyTestApi: NSObject, TestApi {
func test() {
print("test method called in swift")
}
}Usage in Flutter:
try {
await TestApi().test();
debugPrint('test method called');
} catch (e, stackTrace) {
debugPrint('Test method failed. $e $stackTrace');
}Expected results:
test method called is logged
Actual results:
Following is logged:
test method called in swift
flutter: Test method failed. PlatformException(channel-error, Unable to establish connection on channel., null, null) #0 TestApi.test
package:sk/generated/test_api.dart:30
flutter: <asynchronous suspension>
flutter: #1 _MainScreenState.build.<anonymous closure>
package:sk/…/main_screen/main_screen.dart:90
flutter: <asynchronous suspension>
flutter:
So method in Swift side is called, but handling the response on Flutter side by pigeon fails.