flutter - How do you detect the host platform from Dart code?

Question

For UI that should differ slightly on iOS and Android, i.e. on different platforms, there must be a way to detect which one the app is running on, but I couldn't find it in the docs. What is it?

Answer 1

import 'dart:io' show Platform;

if (Platform.isAndroid) {
  // Android-specific code
} else if (Platform.isIOS) {
  // iOS-specific code
}

All options include:

Platform.isAndroid
Platform.isFuchsia
Platform.isIOS
Platform.isLinux
Platform.isMacOS
Platform.isWindows

You can also detect if you are running on the web using kIsWeb, a global constant indicating if the application was compiled to run on the web:

import 'package:flutter/foundation.dart' show kIsWeb;

if (kIsWeb) {
  // running on the web!
} else {
  // NOT running on the web! You can check for additional platforms here.
}

• Platform documentation: https://docs.flutter.io/flutter/dart-io/Platform-class.html
• kIsWeb documentation: https://api.flutter.dev/flutter/foundation/kIsWeb-constant.html