Flutter Integration Screenshot not working for Android - flutter

Question

I am trying to capture screenshots using integration_test but the
await binding.takeScreenshot('${platform}-1');
Hangs for Android with a message
VMServiceFlutterDriver: request_data message is taking a long time to complete...
The app is the Flutter default app with
import 'package:flutter_driver/driver_extension.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:integration_test/integration_test.dart';
import 'dart:io';
import 'package:flutter_stam/main.dart' as app;
void main() {
final IntegrationTestWidgetsFlutterBinding binding = IntegrationTestWidgetsFlutterBinding();
group('Screenshot', () {
testWidgets('Screenshot-1', (WidgetTester tester) async {
String platform;
if (Platform.isAndroid) {
platform = 'android';
} else if (Platform.isIOS) {
platform = 'ios';
} else {
platform = Platform.operatingSystem;
}
app.main();
await tester.pumpAndSettle();
// Verify the counter starts at 0.
expect(find.text('0'), findsOneWidget);
// Finds the floating action button to tap on.
final Finder fab = find.byTooltip('Increment');
// Emulate a tap on the floating action button.
await tester.tap(fab);
// Trigger a frame.
await tester.pumpAndSettle();
await binding.convertFlutterSurfaceToImage();
await binding.takeScreenshot('${platform}-screenshot-1');
// Verify the counter increments by 1.
expect(find.text('1'), findsOneWidget);
});
});
}
script
#!/bin/zsh
flutter drive \
--driver=integration_test/driver.dart \
--target=integration_test/app_test.dart \
-d "iPhone 13 Pro Max"
flutter drive \
--driver=integration_test/driver.dart \
--target=integration_test/app_test.dart \
-d "emulator-5554"
Driver
import 'dart:io';
import 'package:integration_test/integration_test_driver_extended.dart';
Future<void> main() async {
try {
await integrationDriver(
onScreenshot: (String screenshotName, List<int> screenshotBytes) async {
final File image = await File('screenshots/$screenshotName.png')
.create(recursive: true);
image.writeAsBytesSync(screenshotBytes);
return true;
},
);
} catch (e) {
print('An error occurred: $e');
}
}
For iOS, I also had an issue but I managed to solve it
I was getting an error
The following MissingPluginException was thrown running a test:
MissingPluginException(No implementation found for method
captureScreenshot on channel plugins.flutter.io/integration_test)
I changed IntegrationTestPlugin.m
+ (void)registerWithRegistrar:(NSObject<FlutterPluginRegistrar> *)registrar {
[[IntegrationTestPlugin instance] setupChannels:registrar.messenger];
}

Answer 1

Adding an additional tester.pumpAndSettle(); after convertFlutterSurfaceToImage fixed the problem
await tester.pumpAndSettle();
await binding.convertFlutterSurfaceToImage();
await tester.pumpAndSettle();