flutter pub add double_back_to_close_app基于插件公开信息、社区数据与项目使用情况整理的选型参考。
此 Flutter 包允许 Android 用户通过连续按两次返回按钮来关闭应用，通过防止意外退出来提升用户体验。它可在多个平台（包括 iOS、Web、macOS、Windows 和 Linux）上运行，提供一致的行为。该包轻量且易于集成，设置简单。它提供可自定义的返回按钮按下间隔，并支持具有原生功能的 Android 和 iOS 设备。
以下为关联源码仓库的 README 原文快照，最新内容请访问源码仓库。
A Flutter package that allows Android users to press the back-button twice to close the app.
Inside a Scaffold that wraps all your Widgets, place the DoubleBackToCloseApp passing a SnackBar:
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
body: DoubleBackToCloseApp(
child: Home(),
snackBar: const SnackBar(
content: Text('Tap back again to leave'),
),
),
),
);
}
}
I've implemented such solution when I answered this question in Stack Overflow, and since this feature seems to be implemented very often, I decided to extract it in a lightweight library.