应用被杀时,无法导航到推送通知点击的特定屏幕是一个在Flutter Android开发中可能遇到的问题。当应用被杀死后,推送通知点击后无法直接导航到指定的屏幕。
解决这个问题的方法是使用Flutter的本地通知插件,例如flutter_local_notifications。该插件允许应用在后台或被杀死时接收到推送通知,并且可以通过点击通知来导航到指定的屏幕。
以下是解决方案的步骤:
dependencies:
flutter_local_notifications: ^5.0.0
flutter pub get
命令来获取插件依赖。import 'package:flutter_local_notifications/flutter_local_notifications.dart';
FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin =
FlutterLocalNotificationsPlugin();
void main() async {
WidgetsFlutterBinding.ensureInitialized();
await initializeNotifications();
runApp(MyApp());
}
Future<void> initializeNotifications() async {
const AndroidInitializationSettings initializationSettingsAndroid =
AndroidInitializationSettings('app_icon');
final InitializationSettings initializationSettings =
InitializationSettings(android: initializationSettingsAndroid);
await flutterLocalNotificationsPlugin.initialize(initializationSettings);
}
Future<void> _onNotificationClicked(RemoteMessage message) async {
// 解析推送通知中的数据,获取导航目标屏幕的信息
final String screenName = message.data['screen_name'];
// 使用本地通知插件显示通知
const AndroidNotificationDetails androidPlatformChannelSpecifics =
AndroidNotificationDetails(
'your_channel_id',
'your_channel_name',
'your_channel_description',
importance: Importance.max,
priority: Priority.high,
);
const NotificationDetails platformChannelSpecifics =
NotificationDetails(android: androidPlatformChannelSpecifics);
await flutterLocalNotificationsPlugin.show(
0,
'Notification Title',
'Notification Body',
platformChannelSpecifics,
payload: screenName, // 将导航目标屏幕的信息作为payload传递
);
}
// 在main函数中注册通知点击的回调
void main() async {
// ...
FirebaseMessaging.onMessageOpenedApp.listen(_onNotificationClicked);
// ...
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
// ...
initialRoute: '/',
onGenerateRoute: (settings) {
if (settings.name == '/') {
return MaterialPageRoute(builder: (_) => HomeScreen());
} else if (settings.name == '/details') {
final String screenName = settings.arguments as String;
return MaterialPageRoute(
builder: (_) => DetailsScreen(screenName: screenName),
);
}
return null;
},
);
}
}
class HomeScreen extends StatelessWidget {
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(title: const Text('Home')),
body: Center(
child: ElevatedButton(
child: const Text('Go to Details'),
onPressed: () {
Navigator.pushNamed(context, '/details', arguments: 'details_screen');
},
),
),
);
}
}
class DetailsScreen extends StatelessWidget {
final String screenName;
const DetailsScreen({required this.screenName});
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(title: Text(screenName)),
body: Center(child: Text('Details Screen')),
);
}
}
通过以上步骤,当应用被杀死后,点击推送通知时将会导航到指定的屏幕。在这个例子中,推送通知点击后将导航到名为"details_screen"的屏幕。
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