31.44 Flutter Desktop Window Title

20230805

See Section 31.43 to set the window title for a desktop application through the Window Manager.

Alternatively, though no longer recommended, we can set the default window title using the window_size package which is not part of https://pud.dev but can be obtained from https://github.com/google/flutter-desktop-embedding.

Add the following to pubspec.yaml:

dependencies:
  ...
  window_size:
    git:
      url: https://github.com/google/flutter-desktop-embedding.git
      path: plugins/window_size
      ref: 6c66ad23ee79749f30a8eece542cf54eaf157ed8
  ...

The ref: is the github SHA hash key of the commit to use. Choose the latest one at the time of implementing. It can be dropped but is useful to avoid code suddenly failing.

Then in lib/main.dart import the required libraries (foundation.dart is required for the Platform checks) and add the conditional statement with setWindowTitle(). We do this in main() so that it is set before the app runs to ensure the app does not stutter with the original window title in starting up.

import 'package:flutter/foundation.dart';

import 'package:window_size/window_size.dart';

void main() {

  // Identify if Desktop or Mobile app.

  desktop = [TargetPlatform.linux, TargetPlatform.macOS, TargetPlatform.windows];
  bool isDesktop = defaultTargetPlatform in desktop;

  // Tune the window manager before runApp to avoid a lag in the UI.

  if (isDesktop) {

     WidgetsFlutterBinding.ensureInitialized();
     setWindowTitle(APP_TITLE);
  }

    ...

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    
    return MaterialApp(
 
 ...

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