Improve app start integration

CHANGELOG.md

@@ -1,5 +1,13 @@
 # Changelog
 
+## Unreleased
+
+### Enhancements
+
+- Improve app start integration ([#2266](https://github.com/getsentry/sentry-dart/pull/2266))
+  - Fixes ([#2103](https://github.com/getsentry/sentry-dart/issues/2103))
+  - Fixes ([#2233](https://github.com/getsentry/sentry-dart/issues/2233))
+
 ## 8.9.0
 
 ### Features

flutter/example/integration_test/integration_test.dart

@@ -8,7 +8,6 @@ import 'package:flutter/widgets.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:http/http.dart';
 import 'package:sentry_flutter/sentry_flutter.dart';
-import 'package:sentry_flutter/src/integrations/native_app_start_integration.dart';
 import 'package:sentry_flutter_example/main.dart';
 
 void main() {
@@ -26,8 +25,6 @@ void main() {
   // Using fake DSN for testing purposes.
   Future<void> setupSentryAndApp(WidgetTester tester,
       {String? dsn, BeforeSendCallback? beforeSendCallback}) async {
-    NativeAppStartIntegration.isIntegrationTest = true;
-
     await setupSentry(
       () async {
         await tester.pumpWidget(SentryScreenshotWidget(

flutter/example/ios/Runner/AppDelegate.swift

@@ -2,7 +2,7 @@ import UIKit
 import Flutter
 import Sentry
 
-@UIApplicationMain
+@main
 @objc class AppDelegate: FlutterAppDelegate {
   private let _channel = "example.flutter.sentry.io"
 

flutter/example/lib/user_feedback_dialog.dart

@@ -143,7 +143,7 @@ class _SentryLogo extends StatelessWidget {
     var color = Colors.white;
     final brightenss = Theme.of(context).brightness;
     if (brightenss == Brightness.light) {
-      color = const Color(0xff362d59).withOpacity(1.0);
+      color = const Color(0xff362d59);
     }
 
     return FittedBox(