如何从 Dart 代码中检测宿主平台? [英] How do you detect the host platform from Dart code?

问题描述

对于在 iOS 和 Android(即在不同平台)上应该略有不同的 UI，必须有一种检测应用程序在哪个应用程序上运行的方法，但我在文档中找不到它.它是什么?

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?

推荐答案

import 'dart:io' show Platform;

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

所有选项包括:

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

您还可以使用 kIsWeb 检测您是否在网络上运行，这是一个全局常量，指示应用程序是否已编译为在网络上运行:

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

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