Merge branch 'develop' into v4

packages/stream_chat_flutter/lib/src/utils.dart

@@ -2,22 +2,43 @@ import 'dart:async';
 import 'dart:math' as math;
 
 import 'package:flutter/material.dart';
-import 'package:stream_chat_flutter/src/stream_attachment_package.dart';
 import 'package:stream_chat_flutter/src/extension.dart';
 import 'package:stream_chat_flutter/stream_chat_flutter.dart';
 import 'package:url_launcher/url_launcher.dart';
 
 /// Launch URL
 Future<void> launchURL(BuildContext context, String url) async {
-  if (await canLaunch(url)) {
-    await launch(url);
-  } else {
+  try {
+    await launch(Uri.parse(url).withScheme.toString());
+  } catch (e) {
     ScaffoldMessenger.of(context).showSnackBar(
       SnackBar(content: Text(context.translations.launchUrlError)),
     );
   }
 }
 
+/// Get centerTitle considering a default and platform specific behaviour
+bool getEffectiveCenterTitle(
+  ThemeData theme, {
+  bool? centerTitle,
+  List<Widget>? actions,
+}) {
+  if (centerTitle != null) return centerTitle;
+  if (theme.appBarTheme.centerTitle != null) {
+    return theme.appBarTheme.centerTitle!;
+  }
+  switch (theme.platform) {
+    case TargetPlatform.android:
+    case TargetPlatform.fuchsia:
+    case TargetPlatform.linux:
+    case TargetPlatform.windows:
+      return false;
+    case TargetPlatform.iOS:
+    case TargetPlatform.macOS:
+      return actions == null || actions.length < 2;
+  }
+}
+
 /// Shows confirmation dialog
 Future<bool?> showConfirmationDialog(
   BuildContext context, {
@@ -433,8 +454,8 @@ int levenshtein(String s, String t, {bool caseSensitive = true}) {
 
 /// An easy way to handle attachment related operations on a message
 extension AttachmentPackagesX on Message {
-  /// This extension will return a List of type [StreamAttachmentPackage] from the
-  /// existing attachments of the message
+  /// This extension will return a List of type [StreamAttachmentPackage]
+  /// from the existing attachments of the message
   List<StreamAttachmentPackage> getAttachmentPackageList() {
     final _attachmentPackages = List<StreamAttachmentPackage>.generate(
       attachments.length,